The relative reinforcing value of food measures how hard someone will work for a high-energy-dense food when an alternative reward is concurrently available. Higher RRV for HED food has been linked to obesity, yet this association has not been examined in low-income preschool-age children. Further, the development of individual differences in the RRV of food in early childhood is poorly understood. This cross-sectional study tested the hypothesis that the RRV of HED to low-energy-dense food would be greater in children with (...) obesity compared to children without obesity in a sample of 130 low-income 3- to 5-year-olds enrolled in Head Start classrooms in Central Pennsylvania. In addition, we examined individual differences in the RRV of food by child characteristics and food security status. The RRV of food was measured on concurrent progressive-ratio schedules of reinforcement. RRV outcomes included the last schedule reached for cookies and fruit, the breakpoint for cookies in proportion to the total breakpoint for cookies and fruit combined, and response rates. Parents completed the 18-item food security module to assess household food security status and the Behavioral Activation System scale to assess reward sensitivity. Pearson’s correlations and mixed models assessed associations between continuous and discrete child characteristics with RRV outcomes, respectively. Two-way mixed effects interaction models examined age and sex as moderators of the association between RRV and Body Mass Index z-scores. Statistical significance was defined as p < 0.05. Children with obesity had a greater cookie Pmax [F = 4.95, p = 0.03], higher RRV cookie [F = 4.28, p = 0.04], and responded at a faster rate for cookies [F = 17.27, p < 0.001] compared to children without obesity. Children with higher cookie response rates had higher BMIZ ; and RRV cookie was positively associated with BMIZ for older children and boys, but not younger children or girls. The RRV of food did not differ by household food security status. Low-income children with obesity showed greater motivation to work for cookies than fruit compared to their peers without obesity. The RRV of HED food may be an important contributor to increased weight status in boys and future research is needed to better understand developmental trajectories of the RRV of food across childhood. (shrink)

Why do humans make music? Theories of the evolution of musicality have focused mainly on the value of music for specific adaptive contexts such as mate selection, parental care, coalition signaling, and group cohesion. Synthesizing and extending previous proposals, we argue that social bonding is an overarching function that unifies all of these theories, and that musicality enabled social bonding at larger scales than grooming and other bonding mechanisms available in ancestral primate societies. We combine cross-disciplinary evidence from archeology, anthropology, (...) biology, musicology, psychology, and neuroscience into a unified framework that accounts for the biological and cultural evolution of music. We argue that the evolution of musicality involves gene–culture coevolution, through which proto-musical behaviors that initially arose and spread as cultural inventions had feedback effects on biological evolution because of their impact on social bonding. We emphasize the deep links between production, perception, prediction, and social reward arising from repetition, synchronization, and harmonization of rhythms and pitches, and summarize empirical evidence for these links at the levels of brain networks, physiological mechanisms, and behaviors across cultures and across species. Finally, we address potential criticisms and make testable predictions for future research, including neurobiological bases of musicality and relationships between human music, language, animal song, and other domains. The music and social bonding hypothesis provides the most comprehensive theory to date of the biological and cultural evolution of music. (shrink)

Abstract Christopher Gauker has argued that a cause?effect analysis of the acquisition of communication skills in chimpanzees is adequate to describe the data reported in our work at the Language Research Center. I agree that the cause?effect approach to language function is the only viable method of analyzing language. Language must be studied as a process that functions to organize behavior between two or more individuals. However, the problem of language understanding is not addressed satisfactorily by the perspective offered by (...) Gauker. Some more recent work, particularly with the pygmy chimpanzee ?Kanzi?, is now beginning to explicate a cause?effect analysis of language comprehension. It is argued that in the young chimpanzee, as with children, language comprehension is the driving force underlying the language acquisition process. It is further argued that the transition from comprehension to production is made possible by the capacity for goal?directed observational imitation. (shrink)

Bien que la dichotomie classique homme/animal continue de sous-tendre la pensée scientifique occidentale, la génétique moléculaire prouve que les humains sont bien plus proches des chimpanzés et des bonobos que ne pouvaient le supposer les chercheurs en se fondant seulement sur l’évidence anatomique, il y a quelques décennies. Le degré de similitude de l’ADN entre humains, bonobos et chimpanzés autorise à nous classer tous trois comme espèces-sœurs. Ce qui signifie, aussi étrange que cela pui..

We compare and contrast the 60 commentaries by 109 authors on the pair of target articles by Mehr et al. and ourselves. The commentators largely reject Mehr et al.'s fundamental definition of music and their attempts to refute (1) our social bonding hypothesis, (2) byproduct hypotheses, and (3) sexual selection hypotheses for the evolution of musicality. Instead, the commentators generally support our more inclusive proposal that social bonding and credible signaling mechanisms complement one another in explaining cooperation within and competition (...) between groups in a coevolutionary framework (albeit with some confusion regarding terminologies such as “byproduct” and “exaptation”). We discuss the proposed criticisms and extensions, with a focus on moving beyond adaptation/byproduct dichotomies and toward testing of cross-species, cross-cultural, and other empirical predictions. (shrink)

A challenge in human genome research is how to describe the populations being studied. The use of improper and/or imprecise terms has the potential to both generate and reinforce prejudices and to diminish the clinical value of the research. The issue of population descriptors has not attracted enough academic attention outside North America and Europe. In January 2012, we held a two-day workshop, the first of its kind in Japan, to engage in interdisciplinary dialogue between scholars in the humanities, social (...) sciences, medical sciences, and genetics to begin an ongoing discussion of the social and ethical issues associated with population descriptors. (shrink)

We approach the issue of holophrasis versus compositionality in the emergence of protolanguage by analyzing the earliest combinatorial constructions in child, bonobo, and chimpanzee: messages consisting of one symbol combined with one gesture. Based on evidence from apes learning an interspecies visual communication system and children acquiring a first language, we conclude that the potential to combine two different kinds of semiotic element — deictic and representational — was fundamental to the protolanguage forming the foundation for the earliest human language. (...) This is a form of compositionality, in that each communicative element stands for a single semantic element. The conclusion that human protolanguage was exclusively holophrastic — containing a proposition in a single word — emerges only if one considers the symbol alone, without taking into account the gesture as a second element comprising the total message. (shrink)

Harris, Barnier, Sutton and Savage examine the communication styles that boost the mnemonic consequences associated with conversations for long‐term married couples and the circumstances under which the couples form a TMS. Harris and colleagues demonstrated that specific communication styles (e.g., cueing each other) promote group memory success whereas others (e.g., correcting each other) did not enhance group recall performance. These results showed that even in well‐established and enduring distributed cognitive systems such as long‐term intimate couples (Harris, Barnier, Sutton & (...) Keil, 2014), memory benefits depend on effective communication and the specificities of the task performed (e.g., remembering lists of words vs. remembering shared, autobiographical experiences). (shrink)

Diogenes Laertius reports that the Epicurean sage will pity slaves rather than punish them. This paper considers why a hedonistic egoist would feel pity for her subordinates, given that pity can cause psychological pain. I argue that Epicureans feel bad for those who lack the natural good of security, and that Epicureans’ concern for others is entirely consistent with their hedonistic egoism: they will endure the pain of pity in order to achieve the greater pleasure of social cohesion and to (...) avoid the greater pain of social conflict. According to Epicureans, our feelings for fellow humans prevent us from becoming savages, unable to enter into trustworthy compacts to promote our safety. (shrink)

An Eleventh-Century Egyptian Guide to the Universe: The Book of Curiosities. Edited and translated by Yossef Rapoport and Emilie Savage-Smith. Islamic Philosophy, Theology and Science, vol. 87. Leiden: Brill, 2014. Pp. xii + 698, illus. $289, €223.

This paper examines the relationship between Savage's sure thing principle and the value of information. We present two classes of results. First, we show that, under a consequentialist axiom, the sure-thing principle is neither sufficient nor necessary for perfect information to be always desirable: specifically, under consequentialism, the sure thing principle is not implied by the condition that perfect information is always valuable; moreover, the joint imposition of the sure thing principle, consequentialism and either one of two state independence (...) axioms does not imply that perfect information is always desirable. Second, we demonstrate that, under consequentialism, the sure thing principle is necessary for a nonnegative value of possibly imperfect information (though of course the principle is still not sufficient). One implication of these results is that the sure thing principle, under consequentialism, plays a somewhat different role in ensuring dynamic consistency in decision making under uncertainty than does the independence axiom in decision making under risk. (shrink)

No tragic poet uses the phrase μxs22EFνος πνxs22EFουσαν, except Aeschylus, who employs it in describing the Erinyes, not a Greek maiden. Similarly Homer of his ‘Mut-schnaubende’ heroes and of the savage steeds of Diomed. Hence, in the Sophoclean passage, some scribe may have mistaken the familiar ΜΕΝΟCΠΝΕΟΤCΑΝ for the more unusual ΜΕΝΕΙCΙCΤΝΟΤCΑΝ. Initial C attached itself to the preceding word, and ΤΝΟΤCΑΝ became ΠΝΟΤCΑΝ, which was promptly changed to πνxs22EFουσαν.

Challenged by Lord Kelvin's claims that earth and sun were too young to give evolution sufficient time to do its work, especially in the human case, where care for the weak blunts the edge of natural selection, Darwin leaned on Lamarckian thoughts to accelerate the process. The mental and moral traits crowning human distinctiveness, he urged, arose through sexual selection. But promiscuity, infanticide, early betrothals, and female drudgery undermined these effects in “savage races.” In the inevitable decline and ultimate (...) extinction of the “melanin races” Darwin believed he could observe human evolution underway before his eyes. (shrink)

ABSTRACT A patient whose case notes had been used, without her permission, during a disciplinary inquiry on the conduct of Wendy Savage (her obstetrician) complained that this was a breach of confidentiality. Her complaint cannot be understood as based on a concern about the possible adverse consequences of this use of the notes: rather, her concern was just with the fact that medical information about her had been made known to others. My concern is with the meaning and status (...) of the right to privacy, to which the Savage patient appealed. Such a right cannot be reduced to a property right, since this cannot capture what concerned the Savage patient. A proper understanding of what lies behind her complaint requires us to recognise the way in which facts about oneself—in this case facts about one's body—are intimately bound up with one's self, with one's identity, and thus with one's autonomy. What kinds of fact, and thus what conception of the self, are involved in such a conception of privacy need not everywhere be the same; the crucial point is that privacy and the self are concepts which, whatever their particular content, are internally related [1]. (shrink)

Laurence Cooper has offered a wellwritten, carefully argued, thought-provoking account of Rousseaus understanding of the primitive basis for the natural goodness of civil man and the relation between amour de soi and amour-propre. His book exposes a troubling perplexity in Rousseaus work. One might find Rousseaus account of the goodness of the primitive human beings to be a model for psychic unity in all healthy and natural civilized men. But, one could also understand Rousseaus Second Discourse as a thought experiment (...) that shows that distinctively human traits are, in fact, social in origin. Laurence Cooper wants to have it both ways. While self-consciousness is a necessary part of the human condition as we know it, Cooper maintains Rousseaus own ambiguity regarding the humanity of the less than fully human savage man. Unproblematic solitary self-love, amour de soi, defines natural man. Amour-propre, comparative self-preference, develops with sociability and introduces all conflict and corruption. Laurence Cooper examines its potential benefit when redirected into healthy pride or reciprocal affection. (shrink)

Despite acknowledging that musicality evolved to serve multiple adaptive functions in human evolution, Savage et al. promote social bonding to an overarching super-function. Yet, no unifying neurobiological framework is offered. We propose that oxytocin constitutes a socio-allostatic agent whose modulation of sensing, learning, prediction, and behavioral responses with reference to the physical and social environment facilitates music's social bonding effects.

A partir do sistema político-filosófico de Jean-Jaques Rousseau, o objetivo desteartigo é iniciar uma possível compreensão genealógica acerca da relação entre o bemcomum e o bem de si mesmo. Através de uma análise parcial do arcabouço teóricoconceitualsobre a natureza humana e do modelo de soberania popular e deestruturação da sociedade civil proposto pelo filósofo, será posta em discussão arelação entre a vontade geral – que sempre quer o bem comum – e as vontadesparticulares – que sempre buscam o bem de (...) si. Concluí-se que, para Rousseau, saberconformar as vontades particulares à vontade geral é uma exigência da virtude moral,além de ser uma necessidade incontornável para a manutenção do pacto social de umpovo soberano.Based on Jean-Jaques Rousseau’s political and philosophical system, the goal of thisarticle is to begin a possible genealogical understanding about the relation betweencommon good and private good. Through a partial analysis of a theoretical andconceptual framework about human nature and of the model for popular sovereigntyand for the structure of civil society proposed by the philosopher, this work willbring into discussion the relation between the general will, which always seeks thecommon good, and the private will, which in turn seeks only the private good. ForRousseau, knowing how to conform the private wills for the general will is a requirement by moral virtue and an indispensable necessity to sustain the socialcontract of a sovereign people. (shrink)