Human control of action in routine situations involves a flexible interplay between (a) task-dependent serial ordering constraints; (b) top-down, or intentional, control processes; and (c) bottom-up, or environmentally triggered, affordances. In addition, the interaction between these influences is modulated by learning mechanisms that, over time, appear to reduce the need for top-down control processes while still allowing those processes to intervene at any point if necessary or if desired. We present a model of the acquisition and control of (...) goal-directed action that goes beyond existing models by operationalizing an interface between two putative systems—a routine and a non-routine system—thereby demonstrating how explicitly represented goals can interact with the emergent task representations that develop through learning in the routine system. The gradual emergence of task representations offers an explanation for the transfer of control with experience from the non-routine goal-based system to the routine system. At the same time it allows action selection to be sensitive both to environmental triggers and to biasing from multiple levels within the goal system. (shrink)

Topics in Cognitive Science, Volume 13, Issue 1, Page 63-78, January 2021.

Topics in Cognitive Science, Volume 14, Issue 2, Page 241-257, April 2022.

A critical aspect of much human behaviour is the generation and regulation of sequential activities. Such behaviour is seen in both naturalistic settings such as routine action and language production and laboratory tasks such as serial recall and many reaction time experiments. There are a variety of computational mechanisms that may support the generation and regulation of sequential behaviours, ranging from those underlying Turing machines to those employed by recurrent connectionist networks. This paper surveys a range (...) of such mechanisms, together with a range of empirical phenomena related to human sequential behaviour. It is argued that the empirical phenomena pose difficulties for most sequencing mechanisms, but that converging evidence from behavioural flexibility, error data arising from when the system is stressed or when it is damaged following brain injury, and between-trial effects in reaction time tasks, point to a hybrid symbolic activation-based mechanism for the generation and regulation of sequential behaviour. Some implications of this view for the nature of mental computation are highlighted. (shrink)

Law and morality : constructs and models -- The morality of cognition : the normativity of ordinary reasoning -- Law in action : a praxeological approach to law and justice -- Law in context : legal activity and the institutional context -- Procedural constraint : sequentiality, routine, and formal correctness -- Legal relevance : the production of factuality and legality -- From law in the books to law in action : egyptian criminal law between doctrine, case law, (...) jurisprudence, and practice -- The natural person : the contingent and contextual production of legal personality -- The production of causality : a praxeological grammar of the use of causal concepts -- Intention in action : the teleological orientation of the parties to criminal cases -- Morality on trial : structure and intelligibility of the court sentence -- Questions of morality : sequential, structured organization of the interrogation -- The categories of morality : homosexuality between perversion and debauchery. (shrink)

Sequential action makes up the bulk of human daily activity, and yet much remains unknown about how people learn such actions. In one motor learning paradigm, the serial reaction time (SRT) task, people are taught a consistent sequence of button presses by cueing them with the next target response. However, the SRT task only records keypress response times to a cued target, and thus it cannot reveal the full time‐course of motion, including predictive movements. This paper describes a (...) mouse movement trajectory SRT task in which the cursor must be moved to a cued location. We replicated keypress SRT results, but also found that predictive movement—before the next cue appears—increased during the experiment. Moreover, trajectory analyses revealed that people developed a centering strategy under uncertainty. In a second experiment, we made prediction explicit, no longer cueing targets. Thus, participants had to explore the response alternatives and learn via reinforcement, receiving rewards and penalties for correct and incorrect actions, respectively. Participants were not told whether the sequence of stimuli was deterministic, nor if it would repeat, nor how long it was. Given the difficulty of the task, it is unsurprising that some learners performed poorly. However, many learners performed remarkably well, and some acquired the full 10‐item sequence within 10 repetitions. Comparing the high‐ and low‐performers’ detailed results in this reinforcement learning (RL) task with the first experiment's cued trajectory SRT task, we found similarities between the two tasks, suggesting that the effects in Experiment 1 are due to predictive, rather than reactive processes. Finally, we found that two standard model‐free reinforcement learning models fit the high‐performing participants, while the four low‐performing participants provide better fit with a simple negative recency bias model. (shrink)

Sequential action makes up the bulk of human daily activity, and yet much remains unknown about how people learn such actions. In one motor learning paradigm, the serial reaction time (SRT) task, people are taught a consistent sequence of button presses by cueing them with the next target response. However, the SRT task only records keypress response times to a cued target, and thus it cannot reveal the full time‐course of motion, including predictive movements. This paper describes a (...) mouse movement trajectory SRT task in which the cursor must be moved to a cued location. We replicated keypress SRT results, but also found that predictive movement—before the next cue appears—increased during the experiment. Moreover, trajectory analyses revealed that people developed a centering strategy under uncertainty. In a second experiment, we made prediction explicit, no longer cueing targets. Thus, participants had to explore the response alternatives and learn via reinforcement, receiving rewards and penalties for correct and incorrect actions, respectively. Participants were not told whether the sequence of stimuli was deterministic, nor if it would repeat, nor how long it was. Given the difficulty of the task, it is unsurprising that some learners performed poorly. However, many learners performed remarkably well, and some acquired the full 10‐item sequence within 10 repetitions. Comparing the high‐ and low‐performers’ detailed results in this reinforcement learning (RL) task with the first experiment's cued trajectory SRT task, we found similarities between the two tasks, suggesting that the effects in Experiment 1 are due to predictive, rather than reactive processes. Finally, we found that two standard model‐free reinforcement learning models fit the high‐performing participants, while the four low‐performing participants provide better fit with a simple negative recency bias model. (shrink)

Topics in Cognitive Science, Volume 14, Issue 2, Page 311-326, April 2022.

The idea of a neuromuscular synergy involving independent amplitude commands to the agonist and antagonist musculature is quite an appealing part of Plamondon's theory. One question that might be raised relates to the relative independence of the two commands. Evidence is presented that suggests that the two commands might be related in sequential or simultaneous rapid aiming movements.

Cet article propose une réflexion à la fois théorique et méthodologique sur les objets de la phraséologie étendue, qui s’intéresse à des unités préfabriquées du discours au-delà des critères de figement. Plus précisément, nous tentons de clarifier le concept général de motif, ainsi que celui, plus spécifique, de routine discursive. Nous proposons ensuite de comparer deux approches méthodologiques différentes pour l’identification des routines en corpus : une méthode hiérarchique, basée sur le repérage d’arbres lexico-syntaxiques récurrents (ALR), et la méthode (...) séquentielle classique des segments répétés (SR) ou n-grams. Nous montrons, au travers d’une étude sur corpus, que la méthode des ALR présente un réel intérêt pour le repérage des routines et des collocations, mais que les SR semblent plus adaptés et plus simples à mettre en œuvre pour des locutions figées ou des constructions syntaxiques impliquant des lexèmes grammaticaux – le modèle syntaxique des ALR nécessitant une adaptation pour pouvoir identifier ces cas. (shrink)

In computer-mediated communication, users cannot ensure that responsive postings are placed in a directly adjacent position. Yet, paired actions are discernible in which a first pair part makes a second pair part conditionally relevant. While previous studies of short messaging service communication show that users usually send clusters of FPPs and that SPPs are ordered in the same chronology, little is known about sequential practices of dealing with multiple FPPs in text-based WhatsApp communication. This article shows that in German (...) WhatsApp dialogues, users apply a chronological as well as a reversed ordering of SPPs. It is argued that this result can only be partly attributed to the affordances of the mobile messenger. Rather, users arrange SPPs in order to foreground particular topics in extended, chat-like dialogues. (shrink)

The aim of this paper is to make a critical assessment of Krister Segerberg''s theory of action. The first part gives a critical presentation of the key concepts in Segerberg''s informal theory of action. These are the ideas that motivate the formal models he develops. In the second part it is argued that if one takes all of Segerberg''s motivating ideas seriously, problems are forthcoming. The main problem is that on this theory the agents seem to be bound (...) to realize all of their intentions, a problem that stems from Segerberg''s attempt to individuate actions in terms of the agent''s intentions. On the ground that this unfortunate result is forthcoming in both of Segerberg''s approaches to the logic of action it is concluded that the conceptual basis of the theory is problematic. (shrink)

Ethical problems with stakeholder relationships sometimes occur because organizational members are operating out of narrowly scripted organizational routines that do not include an explicit ethical component. In this article we describe methods of single-loop, double-loop, and triple-loop action learning that aim at helping organizational members develop understandings that incorporate conscious ethical considerations in stakeholder relationships. We describe the extent to which these methods achieve "second-order" change in the direction of ethical stakeholder relationships, give examples of the use of each (...) of the methods, and we consider their strengths and limitations for achieving the desired change. (shrink)

Human action has a technical dimension. This book is a hermeneutic and social theoretical interpretation of how acquired capabilities and the means of action together shape the technicity of action. The enactment of individual, group, and institutio.

Causal Decision Theory reckons the choice-worthiness of an option to be completely independent of its evidential bearing on its non-effects. But after one has made a choice this bearing is relevant to future decisions. Therefore it is possible to construct problems of sequential choice in which Causal Decision Theory makes a guaranteed loss. So Causal Decision Theory is wrong. The source of the problem is the idea that agents have a special perspective on their own contemplated actions, from which (...) evidential connections that observers can see are either irrelevant or invisible. (shrink)

Many scholars continue to accord routine action a central role in social theory and defend the continuing relevance of Bourdieu's habitus. Simultaneously, most recognize the importance of reflexivity. In this article, I consider three versions of the effort to render these concepts compatible, which I term "empirical combination," "hybridization," and "ontological and theoretical reconciliation." None of the efforts is ultimately successful in analytical terms. Moreover, I argue on empirical grounds that the relevance of habitus began to decrease toward (...) the end of the 20th century, given major changes in the structures of the advanced capitalist democracies. In these circumstances, habitual forms prove incapable of providing guidelines for people's lives and, thus, make reflexivity imperative. I conclude by arguing that even the reproduction of natal background is a reflexive activity today and that the mode most favorable to producing it—what I call "communicative reflexivity"—is becoming harder to sustain. (shrink)

Focusing on the multi-dimensionality of interactional settings, this study analyzes how the material world is a significant factor in the sequential co-production of the video-taped doctor—patient interactions. The analysis shows how a material artifact, the patient's file, is relevant in two ways: a) as a device which is employed in the sequential organization of the interaction. The patient's file is being used in the contexts of topic development and topic change. b) The file with its specific physical and (...) symbolic features is being co-produced and contested by both actors as a knowledge reservoir. Further inspection of the interactions in concert with theoretical reflections of the role of space and materiality suggests that interactions should be interpreted as happening in spatially arranged constellations of material objects and actors. In these both rigid and flexible constellations boundaries are established, access is distributed, and meaning is solidified. (shrink)

This article uses transcriptions from video recordings of airline pilots at work, on actual flights, to consider some locations and the interactional significance of a feature of routine talk in the airline cockpit: and-prefaced turns. As pilots’ work is formally organized for them as many discrete and ordered tasks, and-prefacing is a local means for maintaining an ongoing sense of their conduct of a flight as a whole. By and-prefacing their talk, pilots present some new talk or task as (...) connected and relevantly next in a larger macro-sequence of work for their flight. And-prefacing is evidence of pilots’ orientation to a sense of sequence that can extend well beyond pairs of turns at talk and/or non-talk activities, or even a series of such paired sequences. It allows pilots to make salient the sequentiality of their work where the officially prescribed wordings they must use can leave this implicit. (shrink)

With reference to Mead, Peirce, speech act theory, conversation analysis, and Luhmann's phenomenological grounded version of systems theory, the paper tries to reconstruct actions as products of communication. A triadic sequence is identified as the elementary unit for the intersubjective constitution of an act. This unit combines three achievements: (a) the constitution of meaning by sequential attribution, (b) the intersubjective coordination of attributed meanings, and (c) the reproduction of rules, guiding the process of constitution and coordination of attributed meanings. (...) Then, using the tools of systems theory and applying them to empirical results of ethnomethodology and conversation analysis, it is shown how the rule scheme is integrated in a triadic sequence, functioning on three different levels of communication. Finally, a specific form of repair after next turn is discussed, relating it to the function of preserving the structure of conversational types. The analysis of such conversational types opens a possible realm of cooperation between conversation analysis and Luhmann's version of systems theory. (shrink)

Although advice is routinely offered in ordinary conversation, commentators and analysts have treated it as a special or delicate type of action, noticing a number of challenges associated with both providing and receiving it. In this article, I first describe the most basic social-sequential context for giving advice and explicate how the formulations speakers use to offer advice are adapted to the distinct epistemic configurations that characterize that context. Drawing on Jefferson and Lee’s observations regarding ‘troubles tellings’, I (...) argue that speakers typically offer advice when a co-participant reports an insoluble trouble or problem to one who possess special knowledge about the domain of trouble. I show how this epistemic configuration constitutes a ‘home environment’ for advice-giving and discuss how speakers vary the design of their advice to adapt to the sequential environments that entail different epistemic configurations. Finally, I consider how alternative, contrasting responses to advice manage the epistemic framework set in motion by advice-giving. (shrink)

Gossip, in its most general sense, means talking about absent third parties with regards to their strengths and weaknesses in an evaluative or informative tone. It is a common phenomenon and has been investigated from different perspectives of research such as human sciences, behavioural psychology, anthropology and so forth. Although it is a prevalent research topic amongst researchers of various disciplines, the sequential organisation of gossip talk still keeps its authenticity in terms of real-life talk-in-action research. This study (...) aims to provide a micro-analysis of the sequential organisation of gossip talk adopting an emic perspective. The data set consists of a collection of 90 hours of audio data collected from a retirement home in Turkey. The data are analysed using Conversation Analysis. The results of the micro-analysis of authentic gossip talk points to a systematicity in gossip talk sequences in terms of initiation, response and closing. (shrink)

In the present scenario, Superman’s problem is not just a problem of physical effort but one of practical reasoning. A well‐adjusted and fairly moral person will respond to the world in certain kinds of ways that go beyond making calculations of reasons. First, there is the issue of what they will count as a reason at all. Second, there is the matter of when serious deliberation is required at all. Just as we act out of habit in our usual daily (...) routines, so too we can act out of habit in less routine matters. And these habits can be emotional too. Injustice causes us to feel anger on our own or on others’ behalf, exemplified by Grant Morrison’s Superman‐as‐social‐crusader in the new Action Comics. When the circumstances make things clear, a virtuous person just acts. In this sense, Superman is virtuous in his exercise of practical reason. (shrink)

The paper explores the topic of organizational routines from a philosophical vantage point to see how the philosophy of action may help improve its understanding in organizational research. The main goal is to show the distinctive complexity of the intentional picture of routines. In this respect, the paper clarifies the interrelations between psychological habits and routines and describes similarities and differences between them. It also highlights the special place of mindfulness as a psycho-cognitive mechanism of action meta-control in (...) intentional explanations of routine complexity. (shrink)

The ability to appropriately sequence a list of discrete items is an important facet in performing routine cognitive tasks and may play a significant role in the acquisition of early communication skills. Though the serial learning abilities of some species, such as chimpanzees and rhesus macaques are well documented, there is virtually no information on the extent of these skills with gorillas. In this study, a young female western lowland gorilla has demonstrated the ability to learn a list of (...) seven Arabic numerals by selecting them on a monitor behind an infrared touchframe. As list length increased, Rollie required fewer trials to reach the criterion, suggesting an acquisition of skills associated with serial learning. Rollie was most likely to correctly select the first item in the sequence and least likely to select the penultimate item in the sequence. Her performance suggests serial learning abilities in the range of other non-verbal species and provides preliminary evidence that supports the assertion that gorillas can succeed at this form of serial learning task. (shrink)

There is a debate over whether actions that resist devaluation are primarily habit- or goal-directed. The incentive habit account of compulsive actions has received support from behavioral paradigms and brain imaging. In addition, the self-reported Creature of Habit Scale has been proposed to capture inter-individual differences in habitual tendencies. It is subdivided into two dimensions: routine and automaticity. We first considered a French version of this questionnaire for validation, based on a sample of 386 undergraduates. The relationship between two (...) dimensions of habit and the risk of substance use disorder and impulsive personality traits was also investigated. COHS has good psychometric properties with both features of habits positively associated with an Obsessive-Compulsive Inventory score. Besides, the propensity to rely more on routines was associated with lower levels of alcohol abuse and nicotine use, suggesting that some degree of routine might act as a protective factor against substance use. In contrast, a high automaticity score was associated with an increased risk of harmful alcohol use. These results demonstrate that the COHS is a valid measure of habitual tendencies and represents a useful tool for capturing inter-individual variations in drug use problems in undergraduates. (shrink)

Repetition dynamically shaped important modes of thought and action in early modern British and European cultures. The centrality and often problematic ambiguity of repetition as they converge in ritual, routine, and regime, however, are rarely assessed accurately because repetition is often dismissed as quaintly primitive or embarrassingly visceral. Ritual, Routine, and Regime is a collection of essays that reveals varied meanings given to and created by repetition from a range of disciplinary perspectives. The contributors reveal repetition at (...) work in evolving definitions of the self and of the emotions, in political rhetoric used to assert a nation's history, in values ascribed to musical styles, in religious verse grounded in practices of prayer, in the aesthetics created by the poetry of work and by rhyme in general, in the recreation of British classics through French translations, and in the repeated but significantly varied sculpture of the portrait bust. Edited by Lorna Clymer, Ritual, Routine, and Regime juxtaposes early modern practices with twentieth- and twenty-first century theoretical accounts of the institutions of repetition. Providing a stimulating, new perspective on early modern culture, the collection describes repetition's often peculiar demands, its surprising gratifications, and its contested interpretations. (shrink)

Sequential recommendation algorithm can predict the next action of a user by modeling the user’s interaction sequence with an item. However, most sequential recommendation models only consider the absolute positions of items in the sequence, ignoring the time interval information between items, and cannot effectively mine user preference changes. In addition, existing models perform poorly on sparse data sets, which make a poor prediction effect for short sequences. To address the above problems, an improved sequential recommendation (...) algorithm based on short-sequence enhancement and temporal self-attention mechanism is proposed in this paper. In the proposed algorithm, a backward prediction model is trained first, to predict the prior items in the user sequence. Then, the reverse prediction model is used to generate a batch of pseudo-historical items before the initial items of the short sequence, to achieve the goal of enhancing the short sequence. Finally, the absolute position information and time interval information of the user sequence are modeled, and a time-aware self-attention model is adopted to predict the user’s next action and generate a recommendation list. Various experiments are conducted on two public data sets. The experimental results show that the method proposed in this paper has excellent performance on both dense and sparse data sets, and its effect is better than that of the state of the art. (shrink)

To explain social learning without invoking the cognitively complex concept of imitation, many learning mechanisms have been proposed. Borrowing an idea used routinely in cognitive psychology, we argue that most of these alternatives can be subsumed under a single process, priming, in which input increases the activation of stored internal representations. Imitation itself has generally been seen as a This has diverted much research towards the all-or-none question of whether an animal can imitate, with disappointingly inconclusive results. In the great (...) apes, however, voluntary, learned behaviour is organized hierarchically. This means that imitation can occur at various levels, of which we single out two clearly distinct ones: the a rather detailed and linear specification of sequential acts, and the a broader description of subroutine structure and the hierarchical layout of a behavioural Program level imitation is a high-level, constructive mechanism, adapted for the efficient learning of complex skills and thus not evident in the simple manipulations used to test for imitation in the laboratory. As examples, we describe the food-preparation techniques of wild mountain gorillas and the imitative behaviour of orangutans undergoing to the wild. Representing and manipulating relations between objects seems to be one basic building block in their hierarchical programs. There is evidence that great apes suffer from a stricter capacity limit than humans in the hierarchical depth of planning. We re-interpret some chimpanzee behaviour previously described as and suggest that all great apes may be able to imitate at the program level. Action level imitation is seldom observed in great ape skill learning, and may have a largely social role, even in humans. (shrink)

This article presents an investigation of the organization and structures of talk-in-interaction over mobile phone. The analysis is based upon naturally occurring data consisting of a corpus of calls recorded during everyday activities of a young adult. Using these data we reveal a range of sequential phenomena associated with mobile phone usage. Established conversation analytic work on landline telephone conversation is used in order to build a comparative analysis of how actions such as openings, caller–called identity management, and topic (...) introduction are accomplished in mobile vs landline telephone conversation. We first show that, far from revolutionizing the organization of telephone conversation, mobile phone talk retains many of the norms associated with landline phone talk. Subsequently, focusing on those modifications that are identifiable in our data, we show how these are related to aspects of the communicative affordances of mobile phones, orientations to which are observable in the talk of participants in mobile phone conversation. (shrink)

I argue that so-called automatic actions – routine performances that we successfully and effortlessly complete without thinking such as turning a door handle, downshifting to 4th gear, or lighting up a cigarette – pose a challenge to causalism, because they do not appear to be preceded by the psychological states which, according to the causal theory of action, are necessary for intentional action. I argue that causalism cannot prove that agents are simply unaware of the relevant psychological (...) states when they act automatically, because these content-specific psychological states aren’t always necessary to make coherent rational sense of the agent’s behaviour. I then dispute other possible grounds for the attribution of these psychological states, such as agents’ own self-attributions. In the final section I introduce an alternative to causalism, building on Frankfurt’s concept of guidance. (shrink)

In workplace settings, skilled participants cooperate on the basis of shared routines in smooth and often implicit ways. Our study shows how interactional histories provide the basis for routine coordination. We draw on theater rehearsals as a perspicuous setting for tracking interactional histories. In theater rehearsals, the process of building performing routines is in focus. Our study builds on collections of consecutive performances of the same instructional task coming from a corpus of video-recordings of 30 h of theater rehearsals (...) of professional actors in German. Over time, instructions and their implementations are routinely coordinated by virtue of accumulated shared interactional experience: Instructions become shorter, the timing of responses becomes increasingly compacted and long negotiations are reduced to a two-part sequence of instruction and implementation. Overall, a routine of how to perform the scene emerges. Over interactional histories, patterns of projection of next actions emanating from instructions become reliable and can be used by respondents as sources for anticipating and performing relevant next actions. The study contributes to our understanding of how shared knowledge and routines accumulate over shared interactional experiences in publicly performed and reciprocally perceived ways and how this impinges on the efficiency of joint action. (shrink)

Once assessments and continuers are focussed on as distinguishable phenomena it becomes clear that they differ from each other not just in the details of their sequential placement within an extended turn, but in other significant ways as well.First, though assessments can take the form of talk with clear lexical content (for example `Oh wow' and assessment adjectives such as ‘beautiful’), they can also be done with sounds such as ‘Ah:::’ whose main function seems to be the carrying of (...) an appropriate intonation contour, as well as gesturally (cf. M. Goodwin, 1980). In this they resemble continuers, which can be performed both with talk whose lexical status is not always granted, and with appropriate gestures such as nods. In view of the way in which both continuers and brief assessments are characteristically situated within a rather specialized environment, the ongoing talk of another, it is not surprising that they share these characteristics. Indeed in so far as these features provide minimal lexical and auditory interference with the other talk already in progress, they are precisely some of the adaptations that would be expected of action able to function in such an environment. Given such structural similarity in action that is also quite brief, the clarity with which assessments can be distinguished from continuers becomes interesting. If in fact these objects are doing different work in the same environment, the salience of their distinctness from each other becomes an important feature of the structure of each. In view of the economy and clarity that brief assessments require, it is all the more remarkable that many of them, through the details of the way in which they are pronounced and their intonation contour, are able to convey quite detailed, even intricate, information about their speaker's involvement in both the assessment and the talk of the moment.Second, while ‘uh huh’ seems to be restricted to placement in the midst of extended talk by another, assessments can occur at the completion of such extended turns as well. Indeed assessments are one of the prototypical ways of bringing an extended turn such as a story to completion. Such differential placement is quite compatible with what has already been noted about the organization of these phenomena. For example, insofar as a continuer treats the talk just heard as preliminary to further talk it would be quite inappropriate as a technique for marking completion of an extended turn. On the other hand by virtue of the way in which they appreciate the details of what has just been said without marking that talk as a prelude to something else, assessments are apt structures for doing terminal work on an extended sequence.Third, ‘uh huh’ seems to be an exclusively recipient action — indeed its work as a continuer is accomplished precisely through placement relative to more extended talk by another speaker. Assessments, however, can be done by speaker as well as recipient.Fourth, though analysis in the present paper has focussed on brief assessments (the type of assessment most similar in form to continuers), assessments unlike continuers can in fact take many shapes, some of them quite elaborate with, for example, extended sentences and even sequences of turns being devoted exclusively to the activity of doing an assessment.In sum, alternative types of action are available to recipients for constructing responses in the midst of another's extended talk. Though the responses themselves are typically brief, the presence of alternatives that can be placed in a variety of sequential positions provides recipients with resources that enable them to participate in speaker's emerging talk in a differentiated fashion, something which has consequences for speaker's actions as well. (shrink)

We present a theory of actions based on a theory of events in branching time, in which "particular" or "token" actions are taken to be sets of transitions from their initial states to the outcomes. We also present a simple theory of composition of events by which composite events can be formed out of other events. Various kinds of actions, including instantaneous group actions and sequential group actions, are introduced by way of composition, and an extended stit theory of (...) agency is proposed, in which the stit operators are combined or equipped with reified group actions. (shrink)

The paper argues that there are two main kinds of joint action, direct joint bringing about (or performing) something (expressed in terms of a DO-operator) and jointly seeing to it that something is the case (expressed in terms of a Stit-operator). The former kind of joint action contains conjunctive, disjunctive and sequential action and its central subkinds. While joint seeing to it that something is the case is argued to be necessarily intentional, direct joint performance can (...) also be nonintentional. Actions performed by social groups are analyzed in terms of the notions of joint action (basically DO and Stit).A precise semantical analysis of the aforementioned kinds of joint action is given in terms of time-trees. With each participant a tree is connected, and the trees are joined defining joint possible worlds in terms of state-expressing nodes from the trees. Sentences containing DO and Stit are semantically evaluated with respect to such joint possible worlds. Intentional joint actions are characterized in terms of the notion of we-intention (joint intention), characterized formally by means of a special operator. (shrink)

Conversation analysis research on naturally occurring NS-NS talk-in-interaction has revealed that participants observably orient to shared expectations of the socio-interactional role of idiomatic expressions, particularly with regard to topic termination and transition. This study has analysed NS-NNS, as well as NS-NS, spontaneous conversation in order to evaluate and uncover recurrent features associated with the use of such expressions. Two main sequential patterns have been observed: one, occurring in both NS-NS and NS-NNS talk, is connected with topic termination and transition, (...) in some cases being extended to allow for the negotiation of interactional alignment between participants; the other, a `negotiative metatalk sequence', follows idiomatic expressions at points of possible topic conclusion and deals with NS-NNS trouble spots in which conversational participants' lack of shared understanding triggers coordinated negotiatory action that clears the way for the introduction of a new topic. (shrink)

Real-world economies are open-ended dynamic systems consisting of heterogeneous interacting participants. Human participants are decision-makers who strategically take into account the past actions and potential future actions of other participants. All participants are forced to be locally constructive, meaning their actions at any given time must be based on their local states; and participant actions at any given time affect future local states. Taken together, these essential properties imply real-world economies are locally-constructive sequential games. This paper discusses a modeling (...) approach, Agent-based Computational Economics, that permits researchers to study economic systems from this point of view. ACE modeling principles and objectives are first concisely presented and explained. The remainder of the paper then highlights challenging issues and edgier explorations that ACE researchers are currently pursuing. (shrink)

The ability to sequence thoughts and actions is impaired in Parkinson’s disease. In PD, a distinct error pattern has been found in the offline performance of sequential working memory. This study examined how PD’s performance of sequential working memory unfolds over time using mouse tracking techniques. Non-demented patients with mild PD and healthy controls completed a computerized digit ordering task with a computer mouse. We measured response dynamics in terms of the initiation time, ordering time, movement time, and (...) area under the movement trajectory curve. This approach allowed us to distinguish between the cognitive processes related to sequence processing before the actual movement and the execution processes of the actual movement. PD patients showed longer initiation times, longer movement times, and more constrained movement trajectories than healthy controls. The initiation time and ordering time negatively correlated with the daily exposure to levodopa and D2/3 receptor agonists, respectively. The movement time positively correlated with the severity of motor symptoms. We demonstrated an altered temporal profile of sequential working memory in PD. Stimulating D1 and D2/3 receptors might speed up the maintenance and manipulation of sequences, respectively. (shrink)

A significant increase in the probability of an action resulting from observing that action performed by another agent cannot, on its own, provide persuasive evidence of imitation. Simple models of social influence based on two-person sequential games suggest that both imitation and pseudo-imitation can be explained by a process more fundamental than priming, namely, subjective utility maximization.

This article investigates the new phenomenon of e-mailed questions to a radio phone-in programme, BBC Radio 4's `Election Call'. Our interest in this phenomenon arose for several reasons. First, as a new form, e-mails were singled out at the beginning of each broadcast for special instructions to listeners, although there was evidence that as the series progressed, dealing with e-mail became more of a routine event in each subsequent programme. Second, on listening to the Election Call broadcasts, the (...) class='Hi'>sequential introduction of an e-mail question appeared to be problematic for the host. First mentions of e-mailed questions were often subject to a noticeable amount of disfluency and repair work, in contrast to the well-rehearsed and highly routine introduction of callers' questions. Third, we are interested in the function of e-mail questions in terms of how they are handled by the host and guest. Are they given the same status as a `call', and if not, where do the differences lie? In our analysis we show how the introduction of this new media form into a well-established context opens up new structural possibilities for both host as interviewer and politician as interviewee, in terms of how questions get framed, and how they get responded to. (shrink)

Several of the contributions to the Lynch et al. Special issue make the claim that conversation-analytic research into epistemics is ‘routinely crafted at the expense of actual, produced and constitutive detail, and what that detail may show us’. Here, we seek to address the inappositeness of this critique by tracing precisely how it is that recognizable actions emerge from distinct practices of interaction. We begin by reviewing some of the foundational tenets of conversation-analytic theory and method – including the relationship (...) between position and composition, and the making of collections – as these appear to be primary sources of confusion for many of the contributors to the Lynch et al. Special Issue. We then target some of the specific arguments presented in the Special Issue, including the alleged ‘over-hearer’s’ writing of metrics, the provision of so-called ‘alternative’ analyses and the supposed ‘crafting’ of generalizations in epistemics research. In addition, in light of Lynch’s more general assertion that conversation analysis has recently been experiencing a ‘rapprochement’ with what he disparagingly refers to as the ‘juggernaut’ of linguistics, we discuss the specific expertise that linguists have to offer in analyzing particular sorts of interactional detail. The article as a whole thus illustrates that, rather than being produced ‘at the expense of actual, produced and constitutive detail’, conversation-analytic findings – including its work in epistemics – are unambiguously anchored in such detail. We conclude by offering our comments as to the link between CA and linguistics more generally, arguing that this relationship has long proven to be – and indeed continues to be – a mutually beneficial one. (shrink)

When we learn how to throw darts we adjust how we throw based on where the darts stick. Much of skill learning is computationally similar in that we learn using feedback obtained after the completion of individual actions. We can formalize such tasks as a search problem; among the set of all possible actions, find the action that leads to the highest reward. In such cases our actions have two objectives: we want to best utilize what we already know (...) (exploitation), but we also want to learn to be more successful in the future (exploration). Here we tested how participants learn movement trajectories where feedback is provided as a monetary reward that depends on the chosen trajectory. We mathematically derived the optimal search policy for our experiment using decision theory. The search behavior of participants is well predicted by an ideal searcher model that optimally combines exploration and exploitation. (shrink)