We focus on the question of how expertise as conceived by the Stoics interacts with the content of impressions. In Section 1, we situate the evidence concerning expert perception within the Stoic account of cognitive development. In Section 2, we argue that the content of rational impressions, and notably of expert impressions, is not exhausted by the relevant propositions. In Section 3, we argue that expert impressions are a subtype of kataleptic impressions which achieve their level of clarity and distinctness (...) due to the contribution of expertise. In Section 4, we argue that the expertise in living well not only allows the wise person to assent correctly but also affects the content of her impressions. We suggest that these two models – one’s attitude toward an impression being informed by expertise, and one’s impressions being affected by expertise – might characterize distinct stages of cognitive development. Stoic wisdom is not only a matter of the way one assents to one’s impressions but also a matter of the condition of one’s soul and, consequently, of the kinds of impressions one even entertains. Expertise offers a model of how cognitive and discriminatory improvement through practice and effort can transform the non-wise into the wise. A reading on which the content of impressions is not exclusively propositional illuminates a further aspect of this transformation. If the same propositions are accessible through impressions with different non-propositional content, we can account for cases in which the novice and the expert entertain the same proposition. (shrink)

In this special issue, our goal is to ... show that the distinguished history of philosophical reflection on attention, insofar as the Western tradition is concerned, has at least some of its roots in Classical Greek and Roman philosophy. This is offered as a partial corrective to historical overviews of the Western discourse, which rarely reach further back than René Descartes. Furthermore, we wish to emphasize that ancient treatments of attention are especially concerned with its role in the context of (...) ethics and human agency. Even when they take their departure from an analysis of selective perceptual attention, their intention is not only to account for this phenomenon as part of a naturalistic science of the mind but also to motivate the view that the capacity to focus or to shift our attention is indispensable to human flourishing. Moral training is to a large extent conceived of as a matter of acquiring and sustaining the mental strength required for maintaining an attentive state of mind while resisting the interference of competing stimuli. -/- TABLE OF CONTENTS Pauliina Remes: From Natural Tendencies to Perceptual Interests and Motivation in Plato’s Timaeus Voula Tsouna: The Epicurean Notion of epibolê Katerina Ierodiakonou: The Stoic Provenance of the Notion of Prosochê Charles Brittain: A Stoic Ethics for Attention (Seneca Letter 56) Lenka Karfíková: Attention in Augustine. (shrink)

Philosophers of science are divided over the interpretations of scientific normativity. Larry Laudan defends a sort of goal-directed rules for scientific methodology. In contrast, Gerard Doppelt thinks methodological rules are a mixed batch of rules in that some are goal-oriented hypothetical rules and others are goal-independent categorical rules. David Resnik thinks that the debate between them is at a standstill now. He further thinks there are certain rules, such as the rule of consistency which is goal independent. However, he proposes (...) a holistic understanding of the scientific methodology. Taking a thread from Resnik, the present paper also advocates a holistic understanding of the scientific methodology. Given that many scientific practices deal with systems, the focus will be given to the systems by assuming each as a constellation of methodological norms. By taking each system as a set of mutually supportive methodological rules whose instrumental values underwrite the coherence relation among them, the paper aims to provide what could be a viable holistic epistemological account that can explain scientific normativity at work in a scientific system. The paper will lay down specific holistic criteria for understanding the scientific methodology. They will be used to show how a holistic account could satisfactorily account for the success of the Compact Muon Solenoid (CMS) experiment in discovering the Higgs boson and how the holistic account can account for the instrumental error behind the apparent faster-than-light neutrino anomaly of the Oscillation Project with Emulsion-t Racking Apparatus (OPERA) experiments respectively. (shrink)

Philosophers of science are divided over the interpretations of scientific normativity. Larry Laudan defends a sort of goal-directed rules for scientific methodology. In contrast, Gerard Doppelt thinks methodological rules are a mixed batch of rules in that some are goal-oriented hypothetical rules and others are goal-independent categorical rules. David Resnik thinks that the debate between them is at a standstill now. He further thinks there are certain rules, such as the rule of consistency which is goal independent. However, he proposes (...) a holistic understanding of the scientific methodology. Taking a thread from Resnik, the present paper also advocates a holistic understanding of the scientific methodology. Given that many scientific practices deal with systems, the focus will be given to the systems by assuming each as a constellation of methodological norms. By taking each system as a set of mutually supportive methodological rules whose instrumental values underwrite the coherence relation among them, the paper aims to provide what could be a viable holistic epistemological account that can explain scientific normativity at work in a scientific system. The paper will lay down specific holistic criteria for understanding the scientific methodology. They will be used to show how a holistic account could satisfactorily account for the success of the Compact Muon Solenoid (CMS) experiment in discovering the Higgs boson and how the holistic account can account for the instrumental error behind the apparent faster-than-light neutrino anomaly of the Oscillation Project with Emulsion-t Racking Apparatus (OPERA) experiments respectively. (shrink)

Contemporary mate preferences can provide important clues to human reproductive history. Little is known about which characteristics people value in potential mates. Five predictions were made about sex differences in human mate preferences based on evolutionary conceptions of parental investment, sexual selection, human reproductive capacity, and sexual asymmetries regarding certainty of paternity versus maternity. The predictions centered on how each sex valued earning capacity, ambition— industriousness, youth, physical attractiveness, and chastity. Predictions were tested in data from 37 samples (...) drawn from 33 countries located on six continents and five islands. For 27 countries, demographic data on actual age at marriage provided a validity check on questionnaire data. Females were found to value cues toresource acquisitionin potential mates more highly than males. Characteristics signalingreproductive capacitywere valued more by males than by females. These sex differences may reflect different evolutionary selection pressures on human males and females; they provide powerful cross-cultural evidence of current sex differences in reproductive strategies. Discussion focuses on proximate mechanisms underlying mate preferences, consequences for human intrasexual competition, and the limitations of this study. (shrink)

The Sociosexual Orientation Inventory (SOI; Simpson & Gangestad 1991) is a self-report measure of individual differences in human mating strategies. Low SOI scores signify that a person is sociosexually restricted, or follows a more monogamous mating strategy. High SOI scores indicate that an individual is unrestricted, or has a more promiscuous mating strategy. As part of the International Sexuality Description Project (ISDP), the SOI was translated from English into 25 additional languages and administered to a total sample of 14,059 people (...) across 48 nations. Responses to the SOI were used to address four main issues. First, the psychometric properties of the SOI were examined in cross-cultural perspective. The SOI possessed adequate reliability and validity both within and across a diverse range of modern cultures. Second, theories concerning the systematic distribution of sociosexuality across cultures were evaluated. Both operational sex ratios and reproductively demanding environments related in evolutionary-predicted ways to national levels of sociosexuality. Third, sex differences in sociosexuality were generally large and demonstrated cross-cultural universality across the 48 nations of the ISDP, confirming several evolutionary theories of human mating. Fourth, sex differences in sociosexuality were significantly larger when reproductive environments were demanding but were reduced to more moderate levels in cultures with more political and economic gender equality. Implications for evolutionary and social role theories of human sexuality are discussed. Key Words: culture; gender; mating; reproduction; sex differences; sex roles; sexual strategies; sociosexuality. (shrink)

Researchers studying human sexuality have repeatedly concluded that men place more emphasis on the physical attractiveness of potential mates than women do, particularly in long-term sexual relationships. Evolutionary theorists have suggested that this is the case because male mate value (the total value of the characteristics that an individual possesses in terms of the potential contribution to his or her mate’s reproductive success) is better predicted by social status and economic resources, whereas women’s mate value hinges on (...) signals conveyed by their physical appearance. This pattern may imply that women trade off attractiveness for resources in mate choice. Here I test whether a trade-off between resources and attractiveness seems to be occurring in the mate choice decisions of women in the United States. In addition, the possibility that the risk of mate desertion drives women to choose less attractive men as long-term mates is tested. The results were that women rated physically attractive men as more likely to cheat or desert a long-term relationship, whereas men did not consider attractive women to be more likely to cheat. However, women showed no aversion to the idea of forming long-term relationships with attractive men. Evidence for a trade-off between resources and attractiveness was found for women, who traded off attractiveness, but not other traits, for resources. The potential meaning of these findings, as well as how they relate to broader issues in the study of sex differences in the evolution of human mate choice for physical traits, is discussed. (shrink)

A small proportion of clinical strains of Candida albicans undergo white–opaque switching. Until recently it was not clear why, since most strains carry the genes differentially expressed in the unique opaque phase. The answer to this enigma lies in the mating process. The majority of C. albicans strains are heterozygous for the mating type locus MTL (a/α) and cannot undergo white–opaque switching. However, when these cells undergo homozygosis at the mating type locus (i.e., become a/a or α/α), they can switch, (...) and they must switch in order to mate. Even though the newly identified stages of mating mimic those of Saccharomyces cerevisiae, the process differs in its dependency on switching, and the effects switching has on gene regulation. This unique feature of C. albicans mating appears to be intimately intertwined with its pathogenesis. The unique, newly discovered dependencies of switching on homozygosis at the MTL locus and of mating on switching are, therefore, reviewed within the context of pathogenesis. BioEssays 26:10–20, 2004. © 2003 Wiley Periodicals, Inc. (shrink)

Unlike some psychiatric illnesses, criminal lifestyles are not reproductive dead ends and may represent frequency-dependent adaptations. Sociopaths may gain reproductively from their greater relative to nonsociopaths. This mating-effort construct should be assessed directly in future studies of sociopathy. Collaboration between biologically oriented and environmentally oriented researchers is needed to investigate the biosocial basis of sociopathy.

Contemporary mate preferences can provide important clues to human reproductive history. Little is known about which characteristics people value in potential mates. Five predictions were made about sex differences in human mate preferences based on evolutionary conceptions of parental investment, sexual selection, human reproductive capacity, and sexual asymmetries regarding certainty of paternity versus maternity. The predictions centered on how each sex valued earning capacity, ambition— industriousness, youth, physical attractiveness, and chastity. Predictions were tested in data from 37 samples (...) drawn from 33 countries located on six continents and five islands. For 27 countries, demographic data on actual age at marriage provided a validity check on questionnaire data. Females were found to value cues toresource acquisitionin potential mates more highly than males. Characteristics signalingreproductive capacitywere valued more by males than by females. These sex differences may reflect different evolutionary selection pressures on human males and females; they provide powerful cross-cultural evidence of current sex differences in reproductive strategies. Discussion focuses on proximate mechanisms underlying mate preferences, consequences for human intrasexual competition, and the limitations of this study. (shrink)

Modern evolutionary psychology provides a cogent criterion for considering an emotion as “basic”: Whether the emotion evolved to solve an adaptive problem tributary to reproduction. Criteria such as distinctive universal signals, presence in other primates, or contribution to survival are not relevant, even though some basic emotions have these properties. Abundant evidence suggests that sexual jealousy is properly considered a basic emotion, even though it lacks a distinct expressive signature, contributes to adaptive problems of mating rather than survival, and may (...) or may not be present in other primates. (shrink)

My response to the commentaries highlights three main points. First, the Sociosexual Orientation Inventory (SOI) has demonstrated adequate reliability and validity across dozens of studies, and it deserves its reputation as a useful measure of basic human mating strategies. Second, the sampling limitations of the International Sexuality Description Project (ISDP) do not negate the conclusion that sex differences in sociosexuality are likely universal across cultures. Third, the ISDP results support several theories of human sexuality, although some are based on faulty (...) assumptions that render them less viable than others. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Skeptic Way: Sextus Empiricus’s “Outlines of Pyrrhonism.” by Benson MatesDavid K. GliddenBenson Mates. The Skeptic Way: Sextus Empiricus’s “Outlines of Pyrrhonism.” New York: Oxford University Press, 1996. Pp. x + 335. Cloth, $55.00, Paper, $22.95.Benson Mates’s translation and commentary of Sextus Empiricus’ Outlines of Pyrrhonism appears nearly half a century after Mates first began his pioneering work on Sextus and Hellenistic philosophy. This publication coincides with another (...) new translation of the Outlines by Annas and Barnes, who provide only an abbreviated commentary (Cambridge University Press, 1994). After decades when the only available English translation was by Bury from the Loeb, there are now choices available which allow Sextus to be taught to different sorts of English readers.In comparing the two translations, this reader found the Annas and Barnes version more mellifluous. Mates is not as sweet. His style is plain-spoken, but this approach has merits when the arguments get going. The Annas and Barnes version uses footnotes for commentary, along with a brief introduction. Their notes cite parallel passages in other works by Sextus, provide brief guidance for interpretation when it is most needed, and connect the reader with a focused list of bibliographical references, inviting readers themselves to turn toward scholarly debates over certain controversial passages. Consequently, Annas and Barnes opens out to a wide audience of classicists, historians, students of literature, general readers interested in scepticism, as well as philosophers of whatever ideology. [End Page 460]The Mates edition is directed toward philosophers alone. It is much less oriented toward historical scholarship, preferring to read Sextus as a contemporary professional philosopher might. In this way, Mates will approach a passage from the Outlines in terms of a passage in Hume or Berkeley, even though, of course, these latter-day philosophers derived their views from reading Sextus. Mates employs philosophese with ease, constructing a version of Sextus from the professional philosopher’s interpretive stance, in the language of propositions and Fregean intensions. The audience Mates is writing for and the viewpoint he is writing from more or less correspond to the “analytical” faction of the American Philosophical Association. Postmodern Foucaultians, contextualist historians, and Hellenistic scholars might find this approach unhelpful, even irritating. But busy, mainstream American philosophers could find Mates’s approach sufficiently sympathetic to actually read some Sextus, in the way Chisholm once had done, finding a passage on the Cyrenaics in Sextus which led to the reinvention of “adverbial appears locutions” and which, in turn, played for decades in the epistemological arcades.Mates begins his edition with a systematic introduction to the Outlines and follows his translation with another hundred pages of narrative, reflecting primarily what Mates finds interesting about certain selected passages. Although, like Annas and Barnes, he provides parallel passages, ancient references, and highly abbreviated accounts of scholarly disputes, his own narrative line dominates both his introductory essay and his commentary. Mates writes in a somewhat chatty style prone to the blunt Cephalean confidence that comes with considerable experience and success as a professional philosopher. His narrative line is clear, connected, often compelling, as for instance when he argues that for Sextus “dogmatizing and believing turn out to be one and the same” (61).Fashion has returned to favor Pyrrhonism in the late twentieth century, just as the cycle had come around before, toward the end of the sixteenth century, sparking a philosophical renaissance. This time around the import may be different. Both Annas and Barnes as well as Mates find Sextus worth reading as serious philosophy. This is a considerable improvement in the fortuna of the Outlines. For decades Sextus was banned in American philosophy departments, as no philosopher at all. He was not taught, he was not read. One highly prominent American philosopher was expressly forbidden to write a dissertation on him, around the time Mates and Chisholm had the courage to publish on him. Sextus is now welcome in the Canon.If Sextus now is one of us, a serious philosopher, then the dogmatists (Stoics, Epicureans, Peripatetics, etc.) he ridiculed were merely failures. The game continues. So, Mates, Annas and Barnes can embrace Sextus as ours. His readers won’t... (shrink)

Hypotrichous ciliates extensively process genomic DNA during their life cycle. Processing occurs after cell mating, beginning with multiple rounds of DNA replication to form polytene chromosomes. Thousands of transposonlike elements are then excised from the chromosomes and destroyed, and thousands of short, internal eliminated sequences (IESs) are excised from coding and noncoding parts of genes and destroyed. IES removal from a gene is accompanied by splicing of the remaining chromosomal DNA segments to form a transcriptionally competent gene. For some genes (...) these DNA segments are in a scrambled order and are ligated into a genetically correct order at the time of IES removal. Next the polytene chromosomes are cut up band‐by‐band and all genes are excised from the chromosomes as short, linear molecules averaging 2.2 kbp (in Oxytricha nova). Gene excision is accompanied by destruction of all nongenic DNA, which, together with the transposonlike elements and IESs, accounts for ∼95% of the total sequence complexity of the genome in O. nova. Telomeric sequences are added to the excised gene‐sized DNA molecules. Finally, the gene‐sized molecules are replicated several times to form the macronucleus of the organism. (shrink)

Schmitt's study provides strong support for sexual strategies theory (Buss & Schmitt 1993) – that men and women both have evolved a complex menu of mating strategies, selectively deployed depending on personal, social, and ecological contexts. It also simultaneously refutes social structural theories founded on the core premise that women and men are sexually monomorphic in their psychology of human mating. Further progress depends on identifying evolved psychological design features sensitive to the costs and benefits of pursuing each strategy from (...) the menu, which vary across mating milieus. These design features, like many well-documented mating adaptations, are likely to be highly sex-differentiated. (shrink)

The von Hippel & Trivers theory of self-deception will gain added traction by identifying psychological design features that come into play in different domains of deception. These include the domains of mating, kinship, coalition formation, status hierarchy negotiation, parenting, friendship, and enmity. Exploring these domains will uncover psychological adaptations and sex-differentiated patterns of self-deception that are logically entailed by their theory.

A sample of 460 low-income women completed a mate preference questionnaire and surveys that assessed family background, life history, conscientiousness, sexual motives, self-ratings (e.g., looks), and current circumstances (e.g., income). A cluster analysis revealed two groups of women: women who reported a strong preference for looks and money in a short-term mate and commitment in a long-term mate, and women who reported smaller differences across mating context. Group differences were found in reported educational levels, family background, sexual (...) development, number of children, and motives for having sex. Implications for understanding individual differences in women’s mate-preference trade-offs are discussed. (shrink)

Coalitions and alliances are core aspects of human behavior. All societies recognize alliances among communities, usually based in part on kinship and marriage. Aggression between groups is ubiquitous, often deadly, fueled by revenge, and can have devastating effects on general human welfare. Given its significance, it is surprising how little we know about the neurobiological and hormonal mechanisms that underpin human coalitionary behavior. Here we first briefly review a model of human coalitionary behavior based on a process of runaway social (...) selection. We then present several exploratory analyses of neuroendocrine responses to coalitionary social events in a rural Dominican community, with the objective of understanding differences between in-group and out-group competition in adult and adolescent males. Our analyses indicate: (1) adult and adolescent males do not elevate testosterone when they defeat their friends, but they do elevate testosterone when they defeat outsiders; (2) pre-competition testosterone and cortisol levels are negatively associated with strength of coalitionary ties; and (3) adult males usually elevate testosterone when interacting with adult women who are potential mates, but in a striking reversal, they have lower testosterone if the woman is a conjugal partner of a close friend. These naturalistic studies hint that reciprocity, dampening of aggression, and competition among friends and allies may be biologically embedded in unique ways among humans. (shrink)

“Sociosexuality from Argentina to Zimbabwe: A 48-nation study of sex, culture, and strategies of human mating” delivers on its title. By combining empiricism and careful hypothesis testing, it not only contributes to our current knowledge but also points the way to further advances.

Dunbar (1993) emphasizes the role of cooperative language use in the evolution of human linguistic capacity and neglects to consider the role that manipulative language use would have played. I argue that as group size and neocortieal size increased during human evolution, the adaptive value of using language to benefit oneself at the expense of others would also have increased. I discuss how selection pressures for manipulative language use would have operated in the contexts of mating, status striving, and social (...) exchange. (shrink)

Women’s preferences for several male traits, including voices, change over the menstrual cycle, but the proximate causes of these changes are unknown. This paper explores relationships between levels of estradiol, progesterone, luteinizing hormone, follicle stimulating hormone, prolactin, and testosterone (estimated using menstrual cycle information) and women’s preferences for male vocal masculinity in normally cycling and hormonally contracepting heterosexual females. Preferences for vocal masculinity decreased with predicted progesterone levels and increased with predicted prolactin levels in normally cycling—but not hormonally contracepting—women. Adaptive (...) explanations for menstrual variation in women’s preferences for masculine traits are discussed and evaluated in light of these findings. (shrink)

The mutation-selection hypothesis may extend to understanding normal personality variation. Traits such as emotional stability, agreeableness, and conscientiousness figure strongly in mate selection and show evidence of non-additive genetic variance. They are linked with reproductively relevant outcomes, including longevity, resource acquisition, and mating success. Evolved difference-detection adaptations may function to spurn individuals whose high mutation load signals a burdensome relationship load. (Published Online November 9 2006).

Human psychology contains adaptations to deploy aggression as one solution to many distinct adaptive problems. These include expropriating resources, defending against incursions, establishing encroachment-deterring reputations, inflicting costs on rivals, ascending dominance hierarchies, dissuading partner defection, eliminating fitness-draining offspring, and obtaining new mates. Aggression is not a singular strategy. Comprehensive theories must identify the of multiple adaptations for aggression.

Westermarck’s Hypothesis is widely accepted by evolutionary scientists as the best explanation for human incest avoidance. However, its explanatory shortcomings have been largely ignored and it has never been pitted against alternative biological hypotheses. Although WH may account for incest avoidance between co-reared kin, it cannot explain other forms of incest avoidance, and cannot account for the differential incidence of sibling-sibling, mother-son, father-daughter and other forms of incest. WH also faces problems adequately addressing phenomena within its explanatory domain. Neither of (...) the studies generally considered to corroborate WH provides a genuine test of it, and the results of experiments thought to confirm WH are vitiated by methodological problems. The present article considers two alternatives to WH: the shared mother hypothesis and the maternal phenotype-matching hypothesis . SMH states that human infants imprint on their mother, and then treat as kin those individuals toward whom their mother behaves in akin-like or mate-like manner. MPMH states that humans unconsciously use the maternal phenotype as a visual template for estimating coefficients of relatedness, and that these estimates regulate altruistic and mating behavior. Both SMH and MPMH are able to account for the kibbutz and simpua marriage data, and entail additional epidemiological and experimental predictions. SMH and MPMH have greater explanatory power than WH. (shrink)

What is meaning? How is linguistic communication possible? What is the nature of language? What is the relationship between language and the world? How do metaphors work? The Philosophy of Language, Sixth Edition, is an excellent introduction to such fundamental questions. Incorporating insights from new coeditor David Sosa, the sixth edition collects forty-eight of the most important articles in the field, making it the most up-to-date and comprehensive volume on the subject. Revised to address changing trends and contemporary developments, the (...) sixth edition features eighteen new articles, including influential work by Kent Bach, Paul Boghossian, M. A. E. Dummett, Delia Graff Fara, Hartry Field, H. P. Grice and P.F. Strawson, Carl G. Hempel, Saul Kripke, Benson Mates, Hilary Putnam, Diana Raffman, Nathan Salmon, Stephen Schiffer, John R. Searle, Roy Sorenson, David Sosa, Dennis Stampe, and Ludwig Wittgenstein. A general introduction and introductions to each section give students background to the issues and explain the connections between them. A bibliography of suggested further reading follows each section. (shrink)

Women have consistently higher levels of disgust than men. This sex difference is substantial in magnitude, highly replicable, emerges with diverse assessment methods, and affects a wide array of outcomes—including job selection, mate choice, food aversions, and psychological disorders. Despite the importance of this far-reaching sex difference, sound theoretical explanations have lagged behind the empirical discoveries. In this article, we focus on the evolutionary-functional level of analysis, outlining hypotheses capable of explaining why women have higher levels of disgust than (...) men. We present four hypotheses for sexual disgust and six for pathogen disgust, along with testable predictions. Discussion focuses on additional new hypotheses and on future research capable of adjudicating among these competing, but not mutually exclusive, hypotheses. (shrink)

Gangestad & Simpson make a major contribution by highlighting the importance of mate choice for good genes, the costs of alternative strategies, and tradeoffs inherent in human mating. By downplaying sex differences and ignoring the nongenetic adaptive benefits of short term mating, however, they undermine their goal of “strategic pluralism” by presenting a theory devoid of many documented complexities of human mating.

Capturing a scientific change in thinking about personality and individual differences that has been building over the past 15 years, this volume stands at an important moment in the development of psychology as a discipline. Rather than viewing individual differences as merely the raw material upon which selection operates, the contributing authors provide theories and empirical evidence which suggest that personality and individual differences are central to evolved psychological mechanisms and behavioral functioning. The book draws theoretical inspiration from life history (...) theory, evolutionary genetics, molecular genetics, developmental psychology, personality psychology, and evolutionary psychology, while utilizing the theories of the "best and the brightest" international scientists working on this cutting edge paradigm shift. In the first of three sections, the authors analyze personality and the adaptive landscape; here, the authors offer a novel conceptual framework for examining "personality assessment adaptations." Because individuals in a social environment have momentous consequences for creating and solving adaptive problems, humans have evolved "difference-detecting mechanisms" designed to make crucial social decisions such as mate selection, friend selection, kin investment, coalition formation, and hierarchy negotiation. In the second section, the authors examine developmental and life-history theoretical perspectives to explore the origins and development of personality over the lifespan. The third section focuses on the relatively new field of evolutionary genetics and explores which of the major evolutionary forces--such as balancing selection, mutation, co-evolutionary arms races, and drift--are responsible for the origins of personality and individual differences. Existing as a seminal work in the newly emerging evolutionary psychology field, this book is a "must-read" for anyone invested in the development of psychology as a field. (shrink)

In previous research, acoustic characteristics of the male voice have been shown to signal various aspects of mate quality and threat potential. But the human voice is also a medium of linguistic communication. The present study explores whether physical and vocal indicators of male mate quality and threat potential are linked to effective communicative behaviors such as vowel differentiation and use of more salient phonetic variants of consonants. We show that physical and vocal indicators of male threat potential, (...) height and formant position, are negatively linked to vowel space size, and that height and levels of circulating testosterone are negatively linked to the use of the aspirated variant of the alveolar stop consonant /t/. Thus, taller, more masculine men display less clarity in their speech and prefer phonetic variants that may be associated with masculine attributes such as toughness. These findings suggest that vocal signals of men’s mate quality and/or dominance are not confined to the realm of voice acoustics but extend to other aspects of communicative behavior, even if this means a trade-off with speech patterns that are considered communicatively advantageous, such as clarity and indexical cues to higher social class. (shrink)

Conceptually integrating Selfish Goal Theory with modern evolutionary psychology amplifies theoretical power. Inconsistency, a key principle of Selfish Goal Theory, illustrates this insight. Conflicting goals of seeking sexual variety and successful mate retention furnish one example. Siblings have evolved goals to cooperate and compete, a second example. Integrating Selfish Goal Theory with evolutionary theory can explain much inconsistent goal-directed behavior.

Cuckoldry is an adaptive problem faced by parentally investing males of socially monogamous species (e.g., humans and many avian species). Mate guarding and frequent in-pair copulation (IPC) may have evolved as anti-cuckoldry tactics in avian species and in humans. In some avian species, the tactics are used concurrently, with the result that mate guarding behaviors and IPC frequency are correlated positively. In other avian species, the tactics are compensatory, with the result that mate guarding behaviors and IPC (...) frequency are correlated negatively. The relationship between mate guarding and IPC frequency in humans is unknown. Avian males that use these tactics concurrently share with human males an inability to guard a female partner continuously during her peak fertile period. We hypothesized, therefore, that men’s mate guarding and IPC frequency function as concurrent anti-cuckoldry tactics, resulting in a positive correlation between them. Study 1 (n=305) secured men’s self-reports of mate guarding and IPC frequency. Study 2 (n+367) secured women’s reports of their partners’ mate guarding and IPC frequency. The concurrent tactics hypothesis was supported in both studies: Men’s mate guarding and IPC frequency are correlated positively, and this association is not attributable to male age, female age, relationship satisfaction, relationship length, or time that the couple spends together. The Discussion section addresses potential limitations of this research and future research directions. (shrink)

Diatoms are a species‐rich group of photosynthetic eukaryotes, with enormous ecological significance and great potential for biotechnology. During the last decade, diatoms have begun to be studied intensively using modern molecular techniques and the genomes of four diatoms have been wholly or partially sequenced. Although new insights into the biology and evolution of diatoms are accumulating rapidly due to the availability of reverse genetic tools, the full potential of these molecular biological approaches can only be fully realized if experimental control (...) of sexual crosses becomes firmly established and widely accessible to experimental biologists. Here we discuss the issue of choosing new models for diatom research, by taking into account the broader context of diatom mating systems and the place of sex in relation to the intricate cycle of cell size reduction and restitution that is characteristic of most diatoms. We illustrate the results of our efforts to select and develop experimental systems in diatoms, using species with typical life cycle attributes, which could be used as future model organisms to complement existing ones. BioEssays 30:692–702, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

Height preferences reflecting positive assortative mating for height—wherein an individual’s own height positively predicts the preferred height of their mate—have been observed in several distinct human populations and are thought to increase reproductive fitness. However, the extent to which assortative preferences for height differ strategically for short-term versus long-term relationship partners, as they do for numerous other indices of mate quality, remains unclear. We explore this possibility in a large representative sample of over 500 men and women aged (...) 15–77 from Canada, Cuba, Norway and the United States. Participants’ own heights were measured, and they indicated their height preferences for a long-term and short-term mate using graphic stimuli containing metric indices. Replicating the “male-taller norm,” participants on average preferred taller-than-average male mates, and shorter-than-average female mates. Positive assortative preferences for height were observed across sexes and samples, however the strength of these height preferences varied with relationship context for men, and not for women. Taller men preferred relatively shorter women for short-term relationships than for long-term relationships, indicating stronger assortative preferences for height in a long-term context. These results provide preliminary evidence that, in addition to mate preferences for other physical traits related to mate quality such as masculinity in the body, face, and voice, assortative preferences for height do vary as a function of expected relationship length, but this was surprisingly only observed in preferences for female height. (shrink)

Low mean fundamental frequency (F 0) in men’s voices has been found to positively influence perceptions of dominance by men and attractiveness by women using standardized speech. Using natural speech obtained during an ecologically valid social interaction, we examined relationships between multiple vocal parameters and dominance and attractiveness judgments. Male voices from an unscripted dating game were judged by men for physical and social dominance and by women in fertile and non-fertile menstrual cycle phases for desirability in short-term and long-term (...) relationships. Five vocal parameters were analyzed: mean F 0 (an acoustic correlate of vocal fold size), F 0 variation, intensity (loudness), utterance duration, and formant dispersion (D f , an acoustic correlate of vocal tract length). Parallel but separate ratings of speech transcripts served as controls for content. Multiple regression analyses were used to examine the independent contributions of each of the predictors. Physical dominance was predicted by low F 0 variation and physically dominant word content. Social dominance was predicted only by socially dominant word content. Ratings of attractiveness by women were predicted by low mean F 0, low D f , high intensity, and attractive word content across cycle phase and mating context. Low D f was perceived as attractive by fertile-phase women only. We hypothesize that competitors and potential mates may attend more strongly to different components of men’s voices because of the different types of information these vocal parameters provide. (shrink)

Benenson et al. amass impressive evidence of robust sex differences as support for expanding “staying alive” theory. We argue for a broader and more domain-specific conceptualization focusing on life history tradeoffs between survival and mating success. Using three examples – women's disgust, fear of rape, and cultivation of bodyguards – we illustrate these tradeoffs and suggest a broader theoretical framework.

Horizontal transfer (HT) is the transmission of genetic material between non‐mating species, a phenomenon thought to occur rarely in multicellular eukaryotes. However, many transposable elements (TEs) are not only capable of HT, but have frequently jumped between widely divergent species. Here we review and integrate reported cases of HT in retrotransposons of the BovB family, and DNA transposons, over a broad range of animals spanning all continents. Our conclusions challenge the paradigm that HT in vertebrates is restricted to infective long (...) terminal repeat (LTR) retrotransposons or retroviruses. This raises the possibility that other non‐LTR retrotransposons, such as L1 or CR1 elements, believed to be only vertically transmitted, can horizontally transfer between species. Growing evidence indicates that the process of HT is much more general across different TEs and species than previously believed, and that it likely shapes eukaryotic genomes and catalyses genome evolution. (shrink)

The importance of mate choice and sexual selection has been emphasized by the majority of evolutionary psychologists. This paper assesses three cases of work on mate choice and sexual selection in evolutionary psychology: David Buss on cross-cultural human mate preferences, Randy Thornhill and Steve Gangestad on the link between mate preferences and fluctuating asymmetry, and Geoffrey Miller on the role of Fisher’s runaway process in human evolution. A mixture of conceptual and empirical problems in each case (...) highlights the general weakness of work in evolutionary psychology on these issues. (shrink)

In this paper, I critique arguments made by philosopher David Buller against central evolutionary-psychological explanations of human mating. Specifically, I aim to rebut his criticisms of Evolutionary Psychology regarding (1) women's long-term mating preferences for high-status men; (2) the evolutionary rationale behind men's provisioning of women; (3) men's mating preferences for young women; (4) women's adaptation for extra-pair sex; (5) the sex-differentiated evolutionary theory of human jealousy; and (6) the notion of mate value. In sum, I aim to demonstrate (...) that Buller's arguments contra Evolutionary Psychologists are left wanting. (shrink)

In this paper, I seek to examine three ancient literary couples to discover the nature of their relationships. Specifically, I will argue that Enkidu and Gilgamesh, David and Jonathan, and Achilles and Patroclus each participated in a relationship that went beyond the trope of heroic friendship. I will also examine how previous scholars portrayed these men in an attempt to remove homoeroticism from their mythologies.

In this book, which thoroughly revises and greatly expands his classic work Sameness and Substance, David Wiggins retrieves and refurbishes in the light of twentieth-century logic and logical theory certain conceptions of identity, of substance and of persistence through change that philosophy inherits from its past. In this new version, he vindicates the absoluteness, necessity, determinateness and all or nothing character of identity against rival conceptions. He defends a form of essentialism that he calls individuative essentialism, and then a form (...) of realism that he calls conceptualist realism. In a final chapter he advocates a human being-based conception of the identity and individuation of persons, arguing that any satisfactory account of personal memory must make reference to the life of the rememberer himself. This important book will appeal to a wide range of readers in metaphysics, philosophical logic, and analytic philosophy. (shrink)