Among the possible solutions to the paradoxes of collective preferences, single-peakedness is significant because it has been associated to a suggestive conceptual interpretation: a single-peaked preference profile entails that, although individuals may disagree on which option is the best, they conceptualize the choice along a shared unique dimension, i.e. they agree on the rationale of the collective decision. In this article, we discuss the relationship between the structural property of singlepeakedness and its suggested interpretation as uni-dimensionality (...) of a social choice. In particular, we offer a formalization of the relationship between single-peakedness and its conceptual counterpart, we discuss their logical relations, and we question whether single-peakedness provides a rationale for collective choices. (shrink)

There are two important aspects of any democratic decision: aggregation of preferences and deliberation about preferences. They are essential and complementary components of any decision making process. While the well-studied process of aggregation focuses on accumulating individual preferences without discussing their origin [4], deliberation can be seen as a conversation through which individuals justify their preferences, a process that might lead to changes in their opinions as they get influenced by one another. Till now, there has (...) been a lot of work on the ‘aggregation’ aspect (e.g., [12, 14, 6]). However, some recent work has focussed on the deliberation aspect as well [8, 9, 10, 15]. Sometimes, deliberation does not lead to unanimity in preferences, but the discussion can lead to some ‘preference uniformity’ (see how deliberation can help in bypassing social choice theory’s impossibility results in [5]), which might facilitate their eventual aggregation. In addition, the combination of both processes provides a more realistic model for decision making scenarios. In light of this status quo, our focus is on the formal study of achieving such preference uniformities, e.g., single-peaked, single-caved, single-crossing, value-restricted, best-restricted, worst-restricted, medium-restricted, or group-separable profiles. In this short abstract we provide our preliminary ideas towards achieving singlepeakedness of preference profiles via deliberation. In what follows, we define two preference upgrade operators based on [8, 9] and provide a preliminary discussion on how single-peaked preference profiles can be achieved through such operations. We will delve into the details of the logical language in the main paper. (shrink)

Small family businesses have generally been shown to exhibit significant concern for social responsibility, especially at the community level. Despite the reported heterogeneity of family firms in their preferences for and participation in social responsibility, the drivers of such differences are not agreed upon in the literature. We draw from enlightened self-interest and social capital theories by exploring their complementary and competing implications for the effect of duration and community satisfaction on participation in community-oriented social responsibility. Additionally, drawing on (...) the association between gender and self-construal and evidence that gender shapes helping and giving behaviors, we assess the moderating role of the gender of the firm manager in these relationships. We test our hypotheses on a sample of 279 family businesses and find support that gender moderates the relationship between community duration and satisfaction and measures of CSR. (shrink)

Arrow's account (1951/1963) of the problem of social choice is based upon the assumption that the preferences of each individual in the relevant group are expressible by a single ordering. This paper lifts that assumption and develops a multidimensional generalization of Arrow's framework. I show that, like Arrow's original framework, the multidimensional generalization is affected by an impossibility theorem, highlighting not only the threat of dictatorship of a single individual, but also the threat of dominance of a (...) single dimension. In particular, even if preferences are single-peaked across individuals within each dimension – a situation called intradimensional single-peakedness – any aggregation procedure satisfying Arrow-type conditions will make one dimension dominant. I introduce lexicographic hierarchies of dimensions as a class of possible aggregation procedures under intradimensional single-peakedness. The interpretation of the results is discussed. (shrink)

When voters’ preferences on candidates are mutually coherent, in the sense that they are at all close to being perfectly single-peaked, perfectly single-troughed, or perfectly polarized, there is a large probability that a Condorcet Winner exists in elections with a small number of candidates. Given this fact, the study develops representations for Condorcet Efficiency of plurality rule as a function of the proximity of voters’ preferences on candidates to being perfectly single-peaked, perfectly (...) class='Hi'>single-troughed or perfectly polarized. We find that the widely used plurality rule has Condorcet Efficiency values that behave in very different ways under each of these three models of mutual coherence. (shrink)

We consider the problem of choosing the location of a public facility either (a) on a tree network or (b) in a Euclidean space. (a) (1996) characterize the class of target rules on a tree network by Pareto efficiency and population-monotonicity. Using Vohra's (1999) characterization of rules that satisfy Pareto efficiency and replacement-domination, we give a short proof of the previous characterization and show that it also holds on the domain of symmetric preferences. (b) The result obtained for model (...) (a) proves to be crucial for the analysis of the problem of choosing the location of a public facility in a Euclidean space. Our main result is the characterization of the class of coordinatewise target rules by unanimity, strategy-proofness, and either replacement-domination or population-monotonicity. (shrink)

We study how to partition a set of agents in a stable way when each coalition in the partition has to share a unit of a perfectly divisible good, and each agent has symmetric single-peaked preferences on the unit interval of his potential shares. A rule on the set of preference profiles consists of a partition function and a solution. Given a preference profile, a partition is selected and as many units of the good as the number (...) of coalitions in the partition are allocated, where each unit is shared among all agents belonging to the same coalition according to the solution. A rule is stable at a preference profile if no agent strictly prefers to leave his coalition to join another coalition and all members of the receiving coalition want to admit him. We show that the proportional solution and all sequential dictator solutions admit stable partition functions. We also show that stability is a strong requirement that becomes easily incompatible with other desirable properties like efficiency, strategy-proofness, anonymity, and non-envyness. (shrink)

In the division problem with single-peaked preferences, an allocation rule is strategy-proof for same tops if no one can gain by reporting a false preference relation having the true peak. This new condition is so weak that it is implied by strategy-proofness and tops-only. We show that the uniform rule is the only rule satisfying this mild property under efficiency and envy-freeness. We then analyze how largely the preference domain can be extended with admitting a rule satisfying (...) the three axioms, and show that the single-plateaued domain is the unique such maximal domain. (shrink)

In the citizen–candidate approach each citizen chooses whether or not to run as candidate. In a single-peaked preference domain, we find that the strategic entry decision of the candidates eliminates one of the most undesirable properties of Plurality rule, namely to elect a poor candidate in three-candidate elections since as we show, the Condorcet winner among the self-declared candidates is always elected. We find that the equilibria with three candidates are basically 2-fold, either there are two right-wing candidates (...) and a left-wing candidate who wins the elections (or its symmetric), or there is a right-wing candidate, a left-wing candidate, and a candidate located in between the two others who becomes winner. We also show that when four or more candidates enter the contest, Plurality rule can elect the Condorcet-loser among the self-declared candidates. (shrink)

The distribution of cultural variants in a population is shaped by both neutral evolutionary dynamics and by selection pressures. The temporal dynamics of social network connectivity, that is, the order in which individuals in a population interact with each other, has been largely unexplored. In this paper, we investigate how, in a fully connected social network, connectivity dynamics, alone and in interaction with different cognitive biases, affect the evolution of cultural variants. Using agent‐based computer simulations, we manipulate population connectivity dynamics (...) (early, mid, and late full‐population connectivity); content bias, or a preference for high‐quality variants; coordination bias, or whether agents tend to use self‐produced variants (egocentric bias), or to switch to variants observed in others (allocentric bias); and memory size, or the number of items that agents can store in their memory. We show that connectivity dynamics affect the time‐course of variant spread, with lower connectivity slowing down convergence of the population onto a single cultural variant. We also show that, compared to a neutral evolutionary model, content bias accelerates convergence and amplifies the effects of connectivity dynamics, while larger memory size and coordination bias, especially egocentric bias, slow down convergence. Furthermore, connectivity dynamics affect the frequency of high‐quality variants (adaptiveness), with late connectivity populations showing bursts of rapid change in adaptiveness followed by periods of relatively slower change, and early connectivity populations following a single‐peak evolutionary dynamic. We evaluate our simulations against existing data collected from previous experiments and show how our model reproduces the empirical patterns of convergence. (shrink)

We used attractiveness judgements as a proxy to visualize the ideal female and male body for male and female participants and investigated how individual differences in the internalization of cultural ideals influence these representations. In the first of two studies, male and female participants judged the attractiveness of 242 male and female computer-generated bodies which varied independently in muscle and adipose. This allowed us to map changes in attractiveness across the complete body composition space, revealing single peaks for the (...) attractiveness of both men and women. In the second study, we asked our participants to choose the most attractive male and female bodies in a method of adjustment task in which they could independently vary muscle and adipose to create the most attractive body. We asked whether individual differences in internalization of cultural ideals, drive for muscularity, eating disorder symptomatology and depressive symptoms could systematically shift the location of peak attractiveness in body composition space. We found a clear preference by both genders for a male body with high muscle and low adipose, and a toned, low adipose female body. The degree of internalization of cultural ideals predicted large individual differences in the composition of the most attractive bodies. (shrink)

(1984). Gender Differences in Subject Preference and Perception of Subject Importance among Third Year Secondary School Pupils in Single‐sex and Mixed Comprehensive Schools. Educational Studies: Vol. 10, No. 3, pp. 243-253.

Instrumented assessments of quiet-stance postural control typically involve recording and analyzing of body sway signal, most often the center of pressure movement. It has been recently suggested that transient characteristics of body sway may offer additional information regarding postural control. In this study, we explored the relationship between whole-trial estimates of body sway and corresponding transient behavior indexes, as well as the effects of leg preference. A total of 705 healthy young athletes performed 30 s single-leg body sway trials (...) for both legs. It was found that the transient characteristics of the body sway are in negligible or weak correlation with the corresponding variables, averaged across the whole trial. All CoP variables showed transient characteristics, reflected in statistically significant decrease or increase throughout the trial. The preferred leg showed smaller body sway; however, the effect sizes were very small. Moreover, differences between the legs were also noted in terms of transient characteristics of body sway. In particular, the preferred leg showed earlier reduction in anterior–posterior body sway and larger reduction in medial–lateral body sway. Further studies should focus on examining the clinical utility of indexes of transient behavior of body sway, for instance, their sensitivity to aging-related changes and risk of falling. (shrink)

Women’s capacity to reproduce varies over the life span, and developmental goals such as family formation are age-graded and shaped by social norms about the appropriate age for completing specific developmental tasks. Thus, a woman’s age may be linked to her ideas about what an ideal partner should be like. With the goals of replicating and extending prior research, in this study we examined the role of age in women’s partner preferences across the globe. We investigated associations of age (...) with ideal long-term partner preferences in a cross-cultural sample of 17,254 single (i.e., unpartnered) heterosexual women, ages 18 to 67, from 147 countries. Data were collected via an online questionnaire, the Ideal Partner Survey. Confirming our preregistered hypotheses, we found no or only negligible age effects on preferences for kindness-supportiveness, attractiveness, financial security-successfulness, or education-intelligence. Age was, however, positively associated with preferences for confidence-assertiveness. Consistent with family formation goals, age was associated with an ideal partner’s parenting intentions (high until approximately age 30, then decreasing afterward). Age range deemed acceptable (and in particular, the discrepancy between one’s own age and the minimum ideal age of a partner) increased with age. This latter pattern also replicated in exploratory analyses based on subsamples of lesbian and bisexual women. In summary, age has a limited impact on partner preferences. Of the attributes investigated, only preference for confidence-assertiveness was linked with age. However, age range deemed acceptable and an ideal partner’s parenting intention, a dimension mostly neglected in earlier research, substantially vary with age. (shrink)

Majority cycling and related social choice paradoxes are often thought to threaten the meaningfulness of democracy. But deliberation can prevent majority cycles – not by inducing unanimity, which is unrealistic, but by bringing preferences closer to single-peakedness. We present the first empirical test of this hypothesis, using data from Deliberative Polls. Comparing preferences before and after deliberation, we find increases in proximity to single-peakedness. The increases are greater for lower versus higher salience issues and for individuals (...) who seem to have deliberated more versus less effectively. They are not merely a byproduct of increased substantive agreement. Our results both refine and support the idea that deliberation, by increasing proximity to single-peakedness, provides an escape from the problem of majority cycling. (shrink)

Ramachandran and Hirstein offer a number of interesting ideas about aesthetic preference. In this commentary I shall focus mainly on their ideas concerning peak shift and prototypicality. The authors give the example of a rat rewarded for responding to a rectangle and not rewarded for responding to a longer triangle . They argue that the rat will respond even more to a more elongated rectangle. In fact, two phenomena are involved here. Peak shift refers to the fact that the rat (...) responds more to a supernormal stimulus . Behavioural contrast refers to the fact that the rat responds more to the S++ than it did to the S+ before discrimination training took place. It does not detract from the authors’ main point, but we would be unlikely to find peak shift in the hypothetical experiment described. Peak shift only occurs when the S+ and the S- are very similar to each other . Let us say that we train a rat to respond to a 1000 Hz tone and not to respond to a 500 Hz tone. No peak shift will be found. We will find peak shift if the S+ is 1000 Hz and the S- is 950 Hz. The conventional explanation for this is that the animal shows generalization. A rat trained simply to respond to a 1000 Hz tone will also respond a bit less to one of 990 Hz, even less to one of 980 Hz, and so on. In discrimination training, our rat would have a strong tendency to respond to a 1000 Hz tone but, because of generalization from the 950 Hz tone, it would also have some tendency not to respond to it. If we subtract the inhibitory gradient around 950 Hz from the excitatory gradient around 1000 Hz, we will end up with maximal responding around, say, 1010 Hz . Intuitively, we would expect the rat to respond more to the S++ but also less vigorously than it had to the S+ before discrimination training was begun. This is because the inhibitory gradient has been subtracted from the excitatory gradient. Surprisingly, we find behavioural contrast; the rat responds more vigorously to the S++ than it had to the S+. Grossberg argues that this is because there is a tendency to keep amount of activation on a layer of cortex constant. (shrink)

In general, the technical apparatus of decision theory is well developed. It has loads of theorems, and they can be proved from axioms. Many of the theorems are interesting, and useful both from a philosophical and a practical perspective. But decision theory does not have a well agreed upon interpretation. Its technical terms, in particular, ‘utility’ and ‘preference’ do not have a single clear and uncontroversial meaning. How to interpret these terms depends, of course, on what purposes in pursuit (...) of which one wants to put decision theory to use. One might want to use it as a model of economic decision-making, in order to predict the behavior of corporations or of the stock market. In that case, it might be useful to interpret the technical term ‘utility’ as meaning money profit. Decision theory would then be an empirical theory. I want to look into the question of what ‘utility’ could mean, if we want decision theory to function as a theory of practical rationality. I want to know whether it makes good sense to think of practical rationality as fully or even partly accounted for by decision theory. I shall lay my cards on the table: I hope it does make good sense to think of it that way. For, I think, if Humeans are right about practical rationality, then decision theory must play a very large part in their account. And I think Humeanism has very strong attractions. (shrink)

The finding that women are attracted to men older than themselves whereas men are attracted to relatively younger women has been explained by social psychologists in terms of economic exchange rooted in traditional sex-role norms. An alternative evolutionary model suggests that males and females follow different reproductive strategies, and predicts a more complex relationship between gender and age preferences. In particular, males' preferences for relatively younger females should be minimal during early mating years, but should become more pronounced (...) as the male gets older. Young females are expected to prefer somewhat older males during their early years and to change less as they age. We briefly review relevant theory and present results of six studies testing this prediction. Study 1 finds support for this gender-differentiated prediction in age preferences expressed in personal advertisements. Study 2 supports the prediction with marriage statistics from two U.S. cities. Study 3 examines the cross-generational robustness of the phenomenon, and finds the same pattern in marriage statistics from 1923. Study 4 replicates Study 1 using matrimonial advertisements from two European countries, and from India. Study 5 finds a consistent pattern in marriages recorded from 1913 through 1939 on a small island in the Philippines. Study 6 reveals the same pattern in singles advertisements placed by financially successful American women and men. We consider the limitations of previous normative and evolutionary explanations of age preferences and discuss the advantages of expanding previous models to include the life history perspective. (shrink)

We present a new method of constructing Condorcet domains from pairs of Condorcet domains of smaller sizes (concatenation + shuffle scheme). The concatenation + shuffle scheme provides maximal, connected, copious, peak-pit domains whenever the original domains have these properties. It allows to construct maximal peak-pit Condorcet domains that are larger than those obtained by the Fishburn’s alternating scheme for all $$n\ge 13$$ n ≥ 13 alternatives. For a large number n of alternatives, we get a lower bound $$2.1045^{n}$$ 2. 1045 (...) n for the cardinality of the largest peak-pit Condorcet domain and a lower bound $$2.1890^{n}$$ 2. 1890 n for the cardinality of the largest Condorcet domain, improving Fishburn’s result. We also show that all Arrow’s single-peaked domains can be constructed by concatenation + shuffle scheme starting from the trivial domain. (shrink)

Did you ever wonder why you are sometimes too tired to watch a film, and would rather watch some TV show? And then, you might end up watching five or six hours and binge watch an entire season, and yet feel too tired to commit yourself to a single 2-hour film piece. The purpose of this paper is threefold. First, I will try to investigate whether there are any ontological differences in the form of a film or a television (...) show. Second, I will try to connect the newest neurological and psychological research regarding binging and attention span and see how seriality influences our brains. I will use the recent neurological findings to try to answer the question of why it seems easier to watch the same number of episodes rather than a single movie. Third, I will use David Lynch's and Mark Frost's third season of Twin Peaks as an example illustrating the blurry borders between a television show and a film, while contrasting it to the binge-watching phenomenon. (shrink)

As persons, beings with a capacity for autonomy, we face a certain practical task in living out our lives. At any given period we find ourselves with many desires or preferences, yet we have limited resources, and so we cannot satisfy them all. Our limited resources include insufficient economic means, of course; few of us have either the funds or the material provisions to obtain or pursue all that we might like. More significantly, though, we are limited to a (...) single life and one of finite duration. We also age, and pursuits that were possible at earlier points within a life may become impossible at later stages; we thus encounter not only an ultimate time limit but episodic limits as well. Because we must live our lives with limited resources—material and temporal—we are pressed to choose among and to order our preferences. Without some selection and ordering, few if any of them would be satisfied, and we would be unable to live lives that are recognizably good at all. Moreover, we would be unable to function well as the autonomous beings that we are. Our practical task then is to form a coherent, stable, and attractive ordering of aims—to develop a conception of our good. (shrink)

As Cuba achieves one of the lowest per capita ecological footprints in the world, the country’s overshoot day was on 1 December 2019, while some European countries already reach this limit in February (e.g., Luxembourg), monitoring the environmental preferences of the Cuban younger generation may offer valuable behavioral or pedagogical insights into such a society. As accepted standardized measures exist in the scales of 2-Major Environmental Values (2-MEV) and the General Ecological Behavior (GEB), both measures are following the necessary (...) psychometric requirement, as they have the unique advantage of repeated independent confirmation (and thus provide an external validity). These captured 40 items of reported behavior originating in six subscales that total in a single main cover score. The first one (2-MEV) monitors individual biocentric and anthropocentric preferences with a 20 item-set by relying upon these two higher-order factors of “Preservation” (PRE) and “Utilization” (UTL). Although many language versions already exist (33 in the case of the 2-MEV) for verifying validities and reliabilities of both scales, a country such as Cuba may affirm that this is due to expected cultural differences as well as their exceptionally low global footprint. Additionally, neither the individual connectedness with nature nor the diurnal preferences within the linear structural model showed a substantial relationship to PRE or UTL. Nevertheless, all the regression scores follow the expected positive or negative directions, albeit not all the fit scores turned out as satisfactorily. Apparently, the applied measures secure a good basis for measuring the attitudinal and behavioral framework, but will need further fine tuning to completely monitor the environmental preferences of Cuban adolescents. (shrink)

The disambiguation of a syntactically ambiguous sentence in favor of a less preferred parse can lead to slower reading at the disambiguation point. This phenomenon, referred to as a garden‐path effect, has motivated models in which readers initially maintain only a subset of the possible parses of the sentence, and subsequently require time‐consuming reanalysis to reconstruct a discarded parse. A more recent proposal argues that the garden‐path effect can be reduced to surprisal arising in a fully parallel parser: words consistent (...) with the initially dispreferred but ultimately correct parse are simply less predictable than those consistent with the incorrect parse. Since predictability has pervasive effects in reading far beyond garden‐path sentences, this account, which dispenses with reanalysis mechanisms, is more parsimonious. Crucially, it predicts a linear effect of surprisal: the garden‐path effect is expected to be proportional to the difference in word surprisal between the ultimately correct and ultimately incorrect interpretations. To test this prediction, we used recurrent neural network language models to estimate word‐by‐word surprisal for three temporarily ambiguous constructions. We then estimated the slowdown attributed to each bit of surprisal from human self‐paced reading times, and used that quantity to predict syntactic disambiguation difficulty. Surprisal successfully predicted the existence of garden‐path effects, but drastically underpredicted their magnitude, and failed to predict their relative severity across constructions. We conclude that a full explanation of syntactic disambiguation difficulty may require recovery mechanisms beyond predictability. (shrink)

This study decodes consumers' preference levels using a convolutional neural network in neuromarketing. The classification accuracy in neuromarketing is a critical factor in evaluating the intentions of the consumers. Functional near-infrared spectroscopy is utilized as a neuroimaging modality to measure the cerebral hemodynamic responses. In this study, a specific decoding structure, called CNN-based fNIRS-data analysis, was designed to achieve a high classification accuracy. Compared to other methods, the automated characteristics, constant training of the dataset, and learning efficiency of the proposed (...) method are the main advantages. The experimental procedure required eight healthy participants to view commercial advertisement videos of different durations. The cerebral hemodynamic responses of the participants were measured. To compare the preference classification performances, CNN was utilized to extract the most common features, including the mean, peak, variance, kurtosis, and skewness. Considering three video durations, the average classification accuracies of 15, 30, and 60 s videos were 84.3, 87.9, and 86.4%, respectively. Among them, the classification accuracy of 87.9% for 30 s videos was the highest. The average classification accuracies of three preferences in females and males were 86.2 and 86.3%, respectively, showing no difference in each group. By comparing the classification performances in three different combinations between two groups, male participants were observed to have targeted preferences for commercial advertising, and the classification performance 88.4% between “like” vs. “dislike” out of three categories was the highest. Finally, pairwise classification performance are shown as follows: For female, 86.1%, 87.4%, 85.2%, and for male 85.7, 88.4, 85.1%, respectively. (shrink)

This paper examines methodological issues raised by revealed preference theory in economics: particularly contemporary revealed preference theory. The paper has three goals. First, to make the case that revealed preference theory is a broad research program in choice theory—not a single theory—and understanding this diversity is essential to any methodological analysis of the program. Second, to explore some of the existing criticisms of revealed preference theory in a way that emphasizes how the effectiveness of the critique depends on the (...) particular version of revealed preference under consideration. Finally, three additional criticisms are presented that are aimed specifically at contemporary revealed preference theory. (shrink)

Māturīdism is an Ottoman identity and this identity was not limited, as is commonly believed, to the last period of the Empire. It maintained its formal existence throughout the Ottoman history. Nevertheless, the context in which the Māturīdism was located or with which it was associated changed in the course of time. In the early period when the eclectic way of thinking was dominant, Māturīdism as a creed was apparent mainly in the jurists whose ascetic identity was prominent and partly (...) in the mystical currents that were essentially continuations of Yasawiyya. At this point, the Bukhara-centered Ḥanafī legal literature played a distinctive role. At the time of Meḥmed II and in the following period during which the philosophical kalām dominated the scene, the Māturīdism was relatively passive and was in search of a position against the Ash‘arism. The new Rāzian paradigm of thought that began to be felt strongly in the Ottoman lands with Meḥmed II as an attempt of integration into the global circulation of knowledge prevented to a certain extent the visibility of Māturīdism. However, even in this period, Māturīdism was remarkably reflected in the muqaddimāt-i arba‘a literature which was directly sponsored by Meḥmed II. The tradition of philosophical kalām in the Ottoman scholarship, just when it was about to yield significant results, was interrupted due to the struggle against the Ṣafawids. Transformation of this political tension, at the same time, into a fight against Shiism also brought about a constriction in the religious thought of the Ottomans. Shiism and its all other variants were bitterly attacked under the main heading of Rāfiḍa. Unfortunately such a refutational approach proved a boomerang and returned in time striking the Ottoman Ṣūfīs who stood near the line of the Ardabil Shrine before its Shiitization. Ḥanafī fatwā literature was used extensively in the refutation texts against Ṣafawids. This brought to the fore at first the Ḥanafite and then the Māturīdite identity. This paper attempts to analyze this changing emphasis on Māturīdism in the Ottoman period and the political and intellectual factors that supported and nourished it. -/- SUMMARY It can be argued that the debates around Ash‘arism and Māturīdism in the Ottoman period and the resulting meant more than attempts of the members of the two sides to understand each other and that Māturīdism, particularly from the 16th century onwards, was gradually brought fore as the identity of Ottomans. In fact, this identity was not limited, as is commonly believed, to the last period of the Empire; it maintained, in form, its existence throughout the Ottoman history. Nevertheless, the context in which the Māturīdism was located or with which it was associated changed in the course of time. In the early period when the eclectic way of thinking was dominant, Māturīdism as a creed was apparent mainly in the jurists whose ascetic identity was prominent and partly in the mystical currents that were essentially continuations of Yasawiyya. At this point, the Bukhara-centered Ḥanafī legal literature played a distinctive role. At the time of Meḥmed II and in the following period during which the philosophical kalām dominated the scene, the Māturīdism was relatively passive and was in search of a position against the Ash‘arism. In this period, Ottoman scholars still embraced the Māturīdī-Ḥanafī line in their theological views. Ḫiḍir Beg’s al-Qaṣīda al-Nūniyya, and al-Khayālī’s commentary upon it, and the commentary written by Aḥmad b. Oġuz Dānishmand al-Aḳshahrī on al-I‘timād of Abū al-Barakāt al-Nasafī were the most noticeable Māturīdite texts from that time. Besides, al-Khayālī’s supercommentary (ḥāshiya) upon the commentary of al-Taftāzānī written on al-‘Aqā’id of Najm al-Dīn ‘Umar al-Nasafī was also of central importance. However, the new Rāzian paradigm of thought that began to be felt strongly in the Ottoman lands with Meḥmed II as an attempt of integration into the global circulation of knowledge prevented to a certain extent the visibility of Māturīdism. But, this should not be taken to mean that Māturīdism lost its ground of existence. That the Ash‘arite works produced in this new paradigm were transferred to and fully integrated in the madrasa curriculum was not because they were Ash‘arite texts but because they were the most original and highest achievements of the philosophical theology. These texts that aimed at combining all fields of knowledge on a single platform, despite the Ash‘arism they included, constituted the peak of the Islamic thought of the time. In the preference of these texts, the fact that the Māturīdī tradition generally stood, in course of time, distant to the philosophy and chose to continue the kalām in the classical line also played a role. Māturīdī theologians Muḥammad b. Ashraf al-Samarqandī, partly, but Ṣadr al-Sharī‘a al-Maḥbūbī, to a greater extent, were notable exceptions to this general Māturīdī tendency. These figures were theologically Māturīdite, but their framework of producing discourse was the combination of philosophy and kalām as with their Ash‘arī counterparts. Therefore, Ṣadr al-Sharī‘a’s criticism of Fakhr al-Dīn al-Rāzī, and through him, of against the Ash‘arism in the context of muqaddimāt arba‘a was wholeheartedly supported by the Ottoman ulama. Even it was Meḥmed II who sponsored the debates regarding muqaddimāt arba‘a. The works written by such scholars as Muṣliḥ al-Dīn al-Kastallī, al-Ṣamṣūnī, ‘Alā’ al-Dīn al-‘Arabī, Mollā ‘Arab al-Anṭākī, Khaṭībzāde, Sa‘dī Chalabī during his and his son Bāyazid II’s reigns were the supercommentaries written upon the related chapter of al-Talwīḥ, al-Taftāzānī’s commentary on Ṣadr al-Sharī‘a’s al-Tawḍīḥ where the former responded to the criticism of the latter from an Ash‘arī point of view. The Ottoman ulama, in their workswere forced to choose between the two scholars and they mostly supported Ṣadr al-Sharī‘a and Māturīdism. The tradition of philosophical kalām in the Ottoman scholarship, just when it was about to yield significant results, was interrupted due to the struggle against the Ṣafawids. Transformation of this political tension, at the same time, into a fight against Shiism also brought about a constriction in the religious thought of the Ottomans. The reflex of of identifying oneself through ‘the other’ made, to a certain extent, the theological and philosophical debates regarding faith meaningless, and gradually gave the Ottoman Sunnism a doctrinal and political tone. In such a context, the Ottomans’ paradigm of producing thought in line with the philosophical kalām began to lose its function, and, the focus of scholarhsip shifted; Shiism with its all variants were began to be bitterly attacked under the main heading of Rāfiḍa. When the refutation texts composed from the reign of Bāyazid II onward to criticize the Ṣafawids are chronologically analyzed, it is seen that the contents of the texts evolved from criticism of Rāfiḍa to criticism of Sūfism. Ḥanafī fatwā literature was used extensively in these refutations. So the fatwās issued against Rāfiḍa and Ṣūfīs in malāmatī line in earlier centuries in different contexts for different reasons were employed to criticize the new opponents. This caused two important results: First, such an approach proved a boomerang and returned in time striking the Ottoman Ṣūfīs who stood near the line of the Ardabil Shrine before its Shiitization. Ḫalwatīs, Bayrāmīs, Gulshanīs, Baktāshīs and Mawlawīs were the sufi groups influenced by this situation in varying degrees. Second, Sunnism was exposed to the narrowization and centered around the fiqh, particularly Ḥanafī fiqh, in the context of Ḳāḍīzādelīs who were the main adversaries of above mentioned groups. The culture of catechism (‘ilm-i ḥāl) that came to the fore through the efforts of Ḳāḍīzādelīs was a crystallization and was mainly fuelled from this tension. Such a crystallization led the Ṣūfīs, the opponents of Ḳāḍīzādelīs, to a higher level of discourse deemphasizing the Ḥanafī aspect: They underscored the discourse of Ahl al-Sunna and four madhhabs, and mostly turned towards the Shāfiʿī and Ash‘arī traditions to look for support fortheir views. This process during which the emphasis of sharī‘a and tradition began to come to the fore once again paved the way for the zuhd and fiqh-centered religious thought that was maintained from the time of the Seljukids in Anatolia and was influential until Meḥmed II’ reign. Therefore in the Ottomans, particularly starting with the reign of Suleymān I, an intensive emphasis on Abū Ḥanīfa was witnessed. Abū Ḥanīfa was at the very center of the debates revolving around zuhd and fiqh which came about in the same period and in which the sharī‘a sensitivity was a determining factor. Al-Māturīdī, whose name was overshadowed for a long time by the name of Abū Ḥanīfa, but who became prominent in the tradition with Abū al-Mu‘īn al-Nasafī, had to transfer his gains for a period of time to Abū Ḥanīfa. Emphasis on Abū Ḥanīfa looks like a rope that when pulled, all the tradition comes with it. When the topics began to be discussed in a manner that would also include the theological context, the contribution of the works ascribed to Abū Ḥanīfa, namely al-Fiqh al-Akbar, al-Waṣiyya and al-‘Ālim wa al-Muta‘allim to the discussions would be limited. For this reason, the need to refer to al-Māturīdī or to the theological formation bearing his name was inevitable. So, the literature on the points of disagreements between the Ash‘arism and the Māturīdism developed both vertically and horizontally in the 18th century and, corollary to that, the debates of free will as a corolloary to that, once again brought Māturīdism to the fore. (shrink)

We provide necessary and sufficient conditions for a dynamically consistent agent always to prefer more informative signals (in single-agent problems). These conditions do not imply recursivity, reduction or independence. We provide a simple definition of dynamically consistent behavior, and we discuss whether an intrinsic information lover (say, an anxious person) is likely to be dynamically consistent.

In lieu of an abstract, here is a brief excerpt of the content:Commentary on “Spiritual Experience and Psychopathology”Roland Littlewood (bio)Keywordsreligion, innovation, psychosis, culture, diagnosisThis is an ambiguous though clinically valuable paper. Jackson and Fulford suggest that the distinction between their two categories, spiritual experience and mental illness, is conventional, yet their emphasis on issues of correct practice from the medical perspective threatens to return both into distinct ontological categories, albeit with a shared phenomenology. I do not understand why any (...) class='Hi'>single instance must either be pathological or spiritual, except through clinical and clerical demands for clarity and order.Mental illness and spirituality are not two distinct natural phenomena “out there,” existing independently of human volition. They are both social—cultural if one prefers—ascriptions. Neither has some substantive core whose elucidation through psychophysiological, phenomenological or ultrahuman procedures could enable us to define its essence and thus differentiate it from the other. Neither experience is a self-evident datum. Both are easily susceptible to critiques, either that they do not exist as natural categories, or else that they should more properly be described as something else—as the workings out of social exclusion in the case of mental illness, as cosmological understanding or mass hysteria in the case of spirituality. Neither, I would suggest, can be specified by physiology or ultrahuman interventions respectively, but rather through shared cultural meanings which in turn are experientially validated by the biosocial phenomena themselves. It is not that we need to exclude the possibility of concurrences in brain states, but rather that these cannot specify the meaning and experience of the phenomena.Note that I emphasize “experienced through cultural meanings,” not “influenced by” culture: I do not accept that psychophysiology can have any existence independent of the social world through which it occurs. The psychiatrists’ form/content distinction, an optimistic proxy for nature/culture (Birnbaum 1923; Schneider 1928) may remain a convenient heuristic device, but it has a curious, perhaps doubtful, intellectual history (see the Endnote following).Cross-cultural comparisons argue that local idioms which we might approximate to current Western notions of mental illness and religion are quite varied. And the validity of particular instances of both “spiritual experience” and “psychopathology” may be contested in any society. While the social consequences of a pattern may determine the approbation accorded to a pattern such that patterns recalling chronic schizophrenia [End Page 67] are regarded as a deficit (and here I agree with James [1902] and the two authors), they are not necessarily aligned to categories of physical illness, but may be seen as a spiritual failure or obstruction. Unsuccessful or inappropriate shamanic practice among Amerindian and circumpolar societies is the classic instance (Eliade 1964). Within Western societies, demonic possession may be read by doctors as mental illness. (It is just as much a “spiritual experience”: why introduce the religionist’s distinctions between different types of ultrahuman agency? Compare Maslow on “peak” experiences. The terms “spiritual” and “religious world view” are naturalized idioms of late Christianity rather than cross-culturally valid terms [Tambiah 1990].) But also the converse (Koch 1972). And this depends on our professional interests. Clearly, psychiatrists prefer to perceive the world in a psychopathological idiom, while religious enthusiasts and clergy may favor divine intercession or demonic possession; and a Christian psychiatry not surprisingly may claim to act as arbiter (Sims 1991). Any specific instance may be perceived differently by individuals in accordance with their interests and affiliations.The paper’s terminology—“spiritual psychotic experience,” “genuine spiritual experience”—is confusing in that it does imply realist, not conventional claims (cf. Endnote 1, Jackson and Fulford). It is not necessary. A less laden idiom—such as “statistically or normatively unusual brain states and their experiential correlates” (Littlewood 1993, 257)—may be just too unwieldy for repetition, but I would propose that at this level of detail we need rather four categories depending or not on concordance with (i) something close to psychiatry’s recognition of a major mental illness, and (ii) something like an anthropological notion of religious or spiritual experience (cf. Littlewood 1991):[Table 1]PsychosisReligious ExperiencePresentAbsentPresentABAbsentCDSo Jackson and Fulford’s three cases fall into group “A” if the PSE was scored... (shrink)

: In spite of recent political setbacks for the movement toward universal health insurance, considerable support remains for the idea. Among those supporting such plans, most assume that a universal insurance system, especially if it is a single-payer system, would offer a single list of basic covered services. This paper challenges that assumption and argues for the availability of multiple lists of services in a universal insurance system. The claim is made that multiple lists will be both more (...) efficient and more fair. Any single list will fund some services that are quite attractive to some people, but only marginally attractive to others. Thus any single-list plan will fund some services that produce only marginal benefit for the resources used. Moreover, since some people will hold values quite compatible with the single list and others will hold values leading to preferences for unfunded services, some people will get much more benefit from any single list than other people will. Fairness and efficiency require providing an entitlement to universal access to health insurance that could be purchased by typical consumers for a fixed price of perhaps $3500. By permitting everyone to pick their preferred list of services available at that price, each person will efficiently use his or her entitlement while getting more equal opportunity for benefits. (shrink)

According to normative decision theory there exists a principle of procedure invariance which states that a decision maker's preference order should remain the same, independently of which response mode is used. For example, the decision maker should express the same preference independently of whether he or she has to judge or decide. Nevertheless, previous research in behavioral decision making has suggested that judgments and choices yield different preference orders in both the risky and the riskless domain. In the latter, the (...) prominence effect has been demonstrated. The main purpose of the present series of experiments was to test cognitive explanations which account for the prominence effect. One of the explanations provided a psychological account based primarily on decision-strategy compatibility. Two other explanations built on information structuring approaches. In the first one, the general idea was that decision makers differentiate between alternatives by value and belief restructuring. In the second approach, violations of invariance were assumed to be attributed to the information structure of the task which in many cases demand problem simplification. A prominence effect was in most experiments found for both choices and preference ratings. This finding spöke against the strategy compatibility explanation. Instead, the different forms of cognitive restructuring provided a better account. However, none of these provided a single explanation. Yet, the structure compatibility explanation appeared to be the more viable one, in particular of the relation between experimentäl manipulations and response mode outcomes. The predictions of the value-belief restructuring explanation, on the other hand, seemed to be more valid for the prominence effect found in choice than for preference ratings. (shrink)

The crucial phase of speciation is argued to be the evolution of mating cross-incompatibility (prezygotic incompatibility) between the genotypes distinguishing the prospective species populations. Based on this idea, a single-locus model of speciation is presented, which is shown to be biologically plausible and may help to settle the controversy as to the biological significance of single-locus modes of speciation. The model involves three alleles, two of which characterize in homozygous state the prospective species populations and in heterozygous state (...) their hybrids. The third allele represents a mutant which is equivalent to one of the first two alleles with the exception that it inhibits mating with carriers of the third allele. This third allele is fixed in one population and immigrates into a second population which contains the mutant inhibiting matings with members of the former population. Migration in the reverse direction does not occur. Proceeding from a widely applicable concept of fitness and mating preference it is shown that postzygotic incompatibility (hybrid or heterozygote disadvantage) alone suffices to trigger evolutionary replacement of the extant mating relations in the population receiving immigrants by any arbitrary degree of prezygotic incompatibility. This corroborates Wallace's hypothesis and emphasizes the potential biological relevance of speciation by reinforcement (parapatric speciation) at single gene loci. (shrink)

In late 2006, the Department of Education changed the Title IX regulations to broaden the permissibility of single-sex education in primary and secondary schools. The changes took place in the context of a growing concern over the performance and well-being of boys in American schools. This article describes, dissects, and critically analyzes the narrative about boys, masculinity, and single-sex education that surrounded these changes. The public narrative about the need for single-sex education focused, in substantial part, on (...) what I call the essentialist myth of masculinity. This article catalogs the important components of this myth: heteronormativity, aggression, activity, sports-obsession, competitiveness, stoicism, and not being girls. The article then shows, using education and gender theory, that this conception of masculinity is harmful to both girls and boys. Instead of pushing this form of masculinity, the law and schools should make room for multiple and varied masculinities for boys (and girls). The article argues that the Title IX regulatory change that allows for the expansion of single-sex schooling can actually work to further empower and entrench the essentialist myth of masculinity, thus violating its own prohibition on sex stereotyping. By adopting strong interpretations of already-existing jurisprudence about gender stereotyping from both constitutional law and Title IX, the article shows how de-essentializing masculinity is possible and preferable in the law. The article concludes that schools that implement single-sex education must do so for reasons other than promoting an essentialized notion of masculinity and that the law must be vigilant in ensuring that schools' implementation not further reify dominant conceptions of what it means to be a boy. (shrink)

The paper examines constraints and preferences employed by people in learning decision rules from preclassified examples. Results from four experiments with human subjects were analyzed and compared with artificial intelligence (AI) inductive learning programs. The results showed the people's rule inductions tended to emphasize category validity (probability of some property, given a category) more than cue validity (probability that an entity is a member of a category given that it has some property) to a greater extent than did the (...) AI programs. Although the relative proportions of different rule types (e.g., conjunctive vs. disjunctive) changed across experiments, a single process model provided a good account of the data from each study. These observations are used to argue for describing constraints in terms of processes embodied in models rather than in terms of products or outputs. Thus AI induction programs become candidate psychological process models and results from inductive learning experiments can suggest new algorithms. More generally, the results show that human inductive generalizations tend toward greater specificity than would be expected if conceptual simplicity were the key constraint on inductions. This bias toward specificity may be due to the fact that this criterion both maximizes inferences that may be drawn from category membership and protects rule induction systems from developing over‐generalizations. (shrink)

While very much in Sen's camp in rejecting revealed preference theory and emphasizing the complexity, incompleteness, and context dependence of preference and the intellectual costs of supposing that all the factors influencing choice can be captured by a single notion of preference, this essay contests his view that economists should recognize multiple notions of preference. It argues that Sen's concerns are better served by embracing a single conception of preference and insisting on the need for analysis of the (...) multiple factors that determine ‘preference’ so conceived. (shrink)

ABSTRACTThe retrospective evaluation of an event tends to be based on how the experience felt during the most intense moment and the last moment. Two experiments tested whether this so-called peak-end effect influences how primary school students are affected by peer assessments. In both experiments, children assessed two classmates on their behaviour in school and then received two manipulated assessments. In Experiment 1, one assessment consisted of four negative ratings and the other of four negative ratings with an extra moderately (...) negative rating added to the end. In Experiment 2, one assessment consisted of four positive ratings, and the other added an extra moderately positive rating to the end. Consistent with the peak-end effect, the extended assessment in Experiment 1 and the short assessment in Experiment 2 were remembered as more pleasant and less difficult to deal with, which shaped children’s peer assessment preferences and prospective choices of which assessm... (shrink)

Older adults prefer positive over negative information in a lab setting, compared to young adults. The extent to which OA avoid negative events or information relevant for their health and safety is not clear. We first investigated age differences in preferences for fear-enhancing vs. fear-reducing news articles during the Ebola Outbreak of 2014. We were able to collect data from 15 YA and 13 OA during this acute health event. Compared to YA, OA were more likely to read the (...) fear-enhancing article, select hand-sanitizer over lip balm, and reported greater fear of Ebola. We further investigated our research question during the COVID-19 pandemic with 164 YA and 171 OA. Participants responded to an online survey about the COVID-19 pandemic across 13 days during the initial peak of the pandemic in the United States. Both YA and OA preferred to read positive over negative news about the coronavirus, but OA were even more likely than YA to prefer the positive news article. No age differences in the fear of contraction were found, but OA engaged in more health-protective behaviors compared to YA. Although OA may not always report greater fear than YA or seek out negative information related to a health concern, they still engage in protective health behaviors. Thus, although positivity effects were observed in attention and emotional reports, OA still modified their behaviors more than YA, suggesting that positivity effects did not hamper OA ability to respond to a health crisis. (shrink)

Six experiments investigated variables predicted to influence subjects’ tendency to classify items by a single property instead of overall similarity, following the paradigm of Norenzayan et al., who found that European Americans tended to give more “logical” rule-based responses. However, in five experiments with Mechanical Turk subjects and undergraduates at an American university, we found a consistent preference for similarity-based responding. A sixth experiment with Korean undergraduates revealed an effect of instructions, also reported by Norenzayan et al., in which (...) classification instructions led to majority rule-based responding but similarity instructions led to overall similarity grouping. Our American subjects showed no such difference and used similarity more overall. We conclude that Americans do not have a preference for rule responding in classification and discuss the differences between tasks that reliably show strong rule or unidimensional preferences in contrast to this classification paradigm. (shrink)

When is it appropriate to harm a single person to help multiple others? Psychologists have investigated this question through the study of hypothetical “trolley” dilemmas involving extreme physical harm life-or-death situations that contrast outcome-focussed, consequentialist moral reasoning with principle-focussed, deontological moral reasoning. The present studies investigate whether participants’ preference for consequentialism generalises across domains. We administered traditional physical harm dilemmas as well as a trolley-type dilemma involving monetary harm. Across four studies (N = 809), an internal meta-analysis demonstrated that (...) participants’ responses to the traditional dilemmas predicted their responses to the monetary dilemma. Additionally, previous research has uncovered that primary psychopathy predicts consequentialist responses on physical harm dilemmas. The current work uncovers that this association does not generalise to monetary harm dilemmas, suggesting that the association between primary psychopathy and consequentialist reasoning is not related to consequentialist reasoning per se, but to the idiosyncrasies of traditional harm-centric trolley dilemmas instead. (shrink)

This conceptual article draws on structuration theory and social identity theory to isolate firm-internal institutionalization processes as antecedents and drivers of corporate political strategizing. Path dependencies in corporate routines and actors' knowledgeability about these path dependencies are singled out as primary factors structuring strategic decision making within the firm. The concepts of path dependency and knowledgeability, respectively, refer to the institutional and cognitive dimension of corporate political strategizing. These two dimensions come together in actors' identities. Identities on their turn shape (...) managers' recognition of policy issues and the interpretation of issue salience relative to corporate interests. Thus, the article argues that institutional features of competitive environments precipitate in processes of identity building and preference formation and are reproduced through organizational routines and practices within the firm. (shrink)

The finding that women are attracted to men older than themselves whereas men are attracted to relatively younger women has been explained by social psychologists in terms of economic exchange rooted in traditional sex-role norms. An alternative evolutionary model suggests that males and females follow different reproductive strategies, and predicts a more complex relationship between gender and age preferences. In particular, males' preferences for relatively younger females should be minimal during early mating years, but should become more pronounced (...) as the male gets older. Young females are expected to prefer somewhat older males during their early years and to change less as they age. We briefly review relevant theory and present results of six studies testing this prediction. Study 1 finds support for this gender-differentiated prediction in age preferences expressed in personal advertisements. Study 2 supports the prediction with marriage statistics from two U.S. cities. Study 3 examines the cross-generational robustness of the phenomenon, and finds the same pattern in marriage statistics from 1923. Study 4 replicates Study 1 using matrimonial advertisements from two European countries, and from India. Study 5 finds a consistent pattern in marriages recorded from 1913 through 1939 on a small island in the Philippines. Study 6 reveals the same pattern in singles advertisements placed by financially successful American women and men. We consider the limitations of previous normative and evolutionary explanations of age preferences and discuss the advantages of expanding previous models to include the life history perspective. (shrink)

The concept of preference structuration not only provides possible escape-routes from socialchoice-theoretic impossibility problems, but also points towards ways of formalizing notions of 'pluralism', 'consensus' and 'issue-dimensionality'. The present note introduces two methods of (operationally) measuring preference structuration, giving attention to both their conceptual characteristics and their computational feasibility. The method to be advocated, called the 'fractionalization' approach, combines well-known social-choice-theoretic criteria of preference structuration (such as single-peakedness or value-restriction) with the frequently used Rae-Taylor (1970) and Laakso-Taagepera (1979) approaches (...) towards measuring the level of fractionalization, and the effective number of components, in a system. (shrink)

Subjunctive conditionals are fundamental to rational decision both in single agent and multiple agent decision problems. They need explicit analysis only when they cause problems, as they do in recent discussions of rationality in extensive form games. This paper examines subjunctive conditionals in the theory of games using a strict revealed preference interpretation of utility. Two very different models of games are investigated, the classical model and the limits of reality model. In the classical model the logic of backward (...) induction is valid, but it does not use subjunctive conditionals; the relevant subjunctive conditionals do not even make sense. In the limits of reality model the subjunctive conditionals do make sense but backward induction is valid only under special assumptions. (shrink)

Although social scientists have identified diverse behavioral patterns among children from dissimilarly structured families, marketing scholars have progressed little in relating family structure to consumption-related decisions. In particular, the roles played by members of single-mother families—which may include live-in grandparents, mother’s unmarried partner, and step-father with or without step-sibling(s)—may affect children’s influence on consumption-related decisions. For example, to offset a parental authority dynamic introduced by a new stepfather, the work-related constraints imposed on a breadwinning mother, or the imposition of (...) adult-level household responsibilities on children, single-mother families may attend more to their children’s product preferences. -/- Without a profile that includes socio-economic, behavioral, and psychological aspects, efficient and socially responsible marketing to single-mother households is compromised. Relative to dual-parent families, single-mother families tend to have fewer resources and less buying power, children who consume more materialistic and compulsively, and children who more strongly influence decision making for both own-use and family-use products. Timely research would ensure that these and other tendencies now differentiate single-mother from dual-parent families in ways that marketers should address. Hence, our threefold goal is (1) to consolidate and highlight gaps in existing theory applied to studying children’s influence on consumption-related decision making in single-mother families, and (2) to propose a hybrid framework that merges two theories conducive to such research, and (3) to identify promising research propositions for future research. (shrink)

This article studies the stability of risk-preference during the COVID-19 pandemic. The results differ between risk-preference measurements and also men and women. We use March 13, 2020, when President Trump declared a national state of emergency as a time anchor to define the pre-pandemic and on-pandemic periods. The pre-pandemic experiment was conducted on February 21, 2020. There are three on-pandemic rounds conducted 10 days, 15 days, and 20 days after the COVID-19 emergency declaration. We include four different risk-preference measures. Men (...) are more sensitive to the pandemic and become more risk-averse based on the Balloon Analogue Risk Task. Women become more risk-averse in the Social and Experience Seeking domains based on the results from the Domain-Specific Risk-Taking and Sensation Seeking Scales. Both men's and women's risk-preference are stable during COVID-19 based on a Gamble Choice task. The results match our hypotheses which are based on the discussion about whether the psychological construct of risk-preference is general or domain-specific. The differential outcomes between incentivized behavioral and self-reported propensity measures of risk-preference in our experiment show the caveats for studies using a single measure to test risk-preference changes during COVID-19. (shrink)

Prospect Theory (PT) is widely regarded as the most promising descriptive model for decision making under uncertainty. Various tests have corroborated the validity of the characteristic fourfold pattern of risk attitudes implied by the combination of probability weighting and value transformation. But is it also safe to assume stable PT preferences at the individual level? This is not only an empirical but also a conceptual question. Measuring the stability of preferences in a multi-parameter decision model such as PT (...) is far more complex than evaluating single-parameter models such as Expected Utility Theory under the assumption of constant relative risk aversion. There exist considerable interdependencies among parameters such that allegedly diverging parameter combinations could in fact produce very similar preference structures. In this paper, we provide a theoretic framework for measuring the (temporal) stability of PT parameters. To illustrate our methodology, we further apply our approach to 86 subjects for whom we elicit PT parameters twice, with a time lag of 1 month. While documenting remarkable stability of parameter estimates at the aggregate level, we find that a third of the subjects show significant instability across sessions. (shrink)