It has been argued that people in areas with high pathogen loads will be more likely to avoid outsiders, to be biased in favor of in-groups, and to hold collectivist and conformist values. Cross-national studies have supported these predictions. In this paper we provide new pathogen codes for the 186 cultures of the Standard Cross-Cultural Sample and use them, together with existing pathogen and ethnographic data, to try to replicate these cross-national findings. In support of the theory, we found that (...) cultures in high pathogen areas were more likely to socialize children toward collectivist values (obedience rather than self-reliance). There was some evidence that pathogens were associated with reduced adult dispersal. However, we found no evidence of an association between pathogens and our measures of group bias (in-group loyalty and xenophobia) or intergroup contact. (shrink)

Males in many non-monogamous species have larger ranges than females do, a sex difference that has been well documented for decades and seems to be an aspect of male mating competition. Until recently, parallel data for humans have been mostly anecdotal and qualitative, but this is now changing as human behavioral ecologists turn their attention to matters of individual mobility. Sex differences in spatial cognition were among the first accepted psychological sex differences and, like differences in ranging behavior, are documented (...) for a growing set of species. This special issue is dedicated to exploring the possible adaptive links between these cognitive and ranging traits. Multiple hypotheses, at various levels of analysis, are considered. At the functional (ultimate) level, a mating-competition hypothesis suggests that range expansion may augment mating opportunities, and a fertility-and-parental-care hypothesis suggests that range contraction may facilitate offspring provisioning. At a more mechanistic (proximate) level, differences in cue availability may support or inhibit particular sex-specific navigation strategies, and spatial anxiety may usefully inhibit travel that would not justify its costs. Studies in four different cultures—Twe, Tsimane, Yucatec Maya, and Faroese—as well as an experimental study using virtual reality tools are the venue for testing these hypotheses. Our hope is to stimulate more research on the evolutionary and developmental processes responsible for this suite of linked behavioral and cognitive traits. (shrink)

It is proposed here that there is a sensitive period in the first two to three years of life during which humans acquire a basic knowledge of what foods are safe to eat. In support of this, it is shown that willingness to eat a wide variety of foods is greatest between the ages of one and two years, and then declines to low levels by age four. These data also show that children who are introduced to solids unusually late (...) have a narrower diet breadth throughout childhood, perhaps because the duration of the sensitive period has been shortened. By reducing the costs associated with learning, a sensitive period for food learning should be adaptive for any omnivore (including early humans) that remains in the same environment throughout its life. (shrink)

The papers in this volume present varying approaches to human aggression, each from an evolutionary perspective. The evolutionary studies of aggression collected here all pursue aspects of patterns of response to environmental circumstances and consider explicitly how those circumstances shape the costs and benefits of behaving aggressively. All the authors understand various aspects of aggression as evolved adaptations but none believe that this implies we are doomed to continued violence, but rather that variation in aggression has evolutionary roots. These papers (...) reveal several similarities between human and nonhuman aggression, including our response to physical strength as an indicator of fighting ability, testosterone response to competition, a sensitivity to paternity, and baseline features of intergroup aggression in foragers and chimps. There is also one paper tackling the phylogeny of these traits. The many differences between human and nonhuman aggression are also pursued here. Topics here include the impact of modern weapons and extremes of wealth and power on both the costs and benefits of fighting, and the scale to which coercion can promote aggression that acts against a fighter’s own interests. Also the implications of large-scale human sociality are discussed. (shrink)

Venturing into novel terrain poses physical risks to a female and her offspring. Females have a greater tendency to avoid physical harm, while males tend to have larger range sizes and often outperform females in navigation-related tasks. Given this backdrop, we expected that females would explore a novel environment with more caution than males, and that more-cautious exploration would negatively affect navigation performance. Participants explored a novel, large-scale, virtual environment in search of five objects, pointed in the direction of each (...) object from the origin, and then navigated back to the objects. We found that females demonstrated more caution while exploring as reflected in the increased amounts of pausing and revisiting of previously traversed locations. In addition, more pausing and revisiting behaviors led to degradation in navigation performance. Finally, individual levels of trait harm avoidance were positively associated with the amount of revisiting behavior during exploration. These findings support the idea that the fitness costs associated with long-distance travel may encourage females to take a more cautious approach to spatial exploration, and that this caution may partially explain the sex differences in navigation performance. (shrink)

The target article gives two explanations for the correlation between pathogens, family ties, and religiosity: one highlights the benefits of xenophobic attitudes for reducing pathogen exposure, the other highlights the benefits of ethnic loyalty for mitigating the costs when a person falls ill. Preliminary data from traditional societies provide some support for the former explanation but not the latter.

Men are more physically aggressive and more risk-prone than women, but are not necessarily more competitive. New data show the gender difference in competitiveness to be one of kind rather than degree, with women and men competing in different ways and, to some extent, over different objectives, but not differing in overall strength of competitive feeling.

The target article claims that evolutionary theory predicts the emergence of sex differences in aggression in early childhood, and that there will be no sex difference in anger. It also finds an absence of sex differences in spousal abuse in Western societies. All three are puzzling from an evolutionary perspective and warrant further discussion.

There is evidence that in women high levels of testosterone are associated with more sexual partners and more permissive sexual attitudes. If a similar relationship holds true for men, the higher basal testosterone levels of divorced and unmarried men may be caused by this relationship rather than by testosterone's effect on dominance striving.

Cross-cultural sex differences in mobility and harm avoidance have been widely reported, often emphasizing fitness benefits of long-distance travel for males and high costs for females. Data emerging from adults in small-scale societies, however, are challenging the assumption that female mobility is restricted during reproduction. Such findings warrant further exploration of the ontogeny of mobility. Here, using a combination of machine-learning, mixed-effects linear regression, and GIS mapping, we analyze range size, daily distance traveled, and harm avoidance among Hadza foragers during (...) middle childhood and adolescence. Distance traveled increased with age and, while male adolescents had the longest daily ranges, average daily distance traveled by each sex was similar. We found few age- or sex-related patterns in harm-avoidant responses and a high degree of individual variation. When queried on the same issues, children and their parents were often in alignment as to expectations pertaining to harm avoidance, and siblings tended to behave in similar ways. To the extent that sex differences in mobility did emerge, they were associated with ecological differences in physical threats associated with sex-specific foraging behaviors. Further, we found no strong association between harm avoidance and mobility. Young Hadza foragers of both sexes are highly mobile, regardless of how harm avoidant they are. Taken together, our findings indicate that the causal arrows between harm avoidance and mobility must be evaluated in ecologically specific frameworks where cultural expectations of juvenile mobility can be contextualized. (shrink)

A fundamental cognitive function found across a wide range of species and necessary for survival is the ability to navigate complex environments. It has been suggested that mobility may play an important role in the development of spatial skills. Despite evolutionary arguments offering logical explanations for why sex/gender differences in spatial abilities and mobility might exist, thus far there has been limited sampling from nonindustrialized and subsistence-based societies. This lack of sampling diversity has left many unanswered questions regarding the effects (...) that environmental variation and cultural norms may have in shaping mobility patterns during childhood and the development of spatial competencies that may be associated with it. Here we examine variation in mobility, performance on large-scale spatial skills, and performance on small-scale spatial skills among Twa forager/pastoralist children whose daily lives have been dramatically altered since settlement and the introduction of government-funded boarding schools. Unlike in previous findings among Twa adults, boys and girls show similar patterns of travel on all measures of mobility. We also find no significant differences in spatial task performance by gender for large- or small-scale spatial skills. Further, children performed as well as adults did on mental rotation, and they outperformed adults on the water-level task. We discuss how children’s early learning environments may influence the development of both large- and small-scale spatial skills. (shrink)

A correction to this paper has been published: https://doi.org/10.1007/s12110-021-09403-x.

Spatial experience in childhood is a factor in the development of spatial abilities. In this study, we assessed whether American and Faroese participants’ (N = 246, Mage = 19.31 years, 151 females) early spatial experience and adult spatial outcomes differed by gender and culture, and if early experience was related to adult performance and behavior. Participants completed retrospective reports on their childhood spatial experience, both large-scale (permitted childhood range size) and small-scale (Lego play). They also completed assessments of their current (...) large-scale spatial behavior (navigational strategy) and small-scale ability (mental rotation task, MRT). We replicated earlier results showing better MRT performance among males and more reliance by males on orientation navigational strategies, although males and females reported similar ranges as children. However, there were cross-cultural differences, with Faroese having larger childhood ranges, less reliance on route strategies, better MRT scores, and a smaller gender difference in MRT. Larger permitted childhood ranges were associated with reduced use of route strategies for navigation in adulthood, and greater Lego play in childhood predicted better MRT performance as adults. There was also some evidence supporting relationships across spatial scales, with more Lego play predicting an orientation style of navigation and larger childhood ranges predicting better performance on the MRT, although the latter was not independent of country. In sum, we observed an association in both cultures between large-scale childhood experience and large-scale behavior in adulthood, small-scale experience in childhood and adult small-scale performance, and some associations between experience and behavior across spatial scales. (shrink)

Cognitive Science, Volume 46, Issue 2, February 2022.

A Correction to this paper has been published: https://doi.org/10.1007/s12110-021-09400-0.

Navigational performance responds to navigational challenges, and both decline with age in Western populations as older people become less mobile. But mobility does not decline everywhere; Tsimané forager-farmers in Bolivia remain highly mobile throughout adulthood, traveling frequently by foot and dugout canoe for subsistence and social visitation. We, therefore, measured both natural mobility and navigational performance in 305 Tsimané adults, to assess differences with age and to test whether greater mobility was related to better navigational performance across the lifespan. Daily (...) mobility was measured by GPS tracking, regional mobility through interview, navigational performance through pointing accuracy and perspective taking in environmental space, and mental rotation by a computerized task. Although mental rotation and spatial perspective taking declined with age, mobility and pointing accuracy remained high from mid-life through old age. Greater regional mobility was associated with greater accuracy at pointing and perspective taking, suggesting that spatial experience at environmental scales may help maintain navigational performance in later adulthood. (shrink)

Navigational performance responds to navigational challenges, and both decline with age in Western populations as older people become less mobile. But mobility does not decline everywhere; Tsimané forager-farmers in Bolivia remain highly mobile throughout adulthood, traveling frequently by foot and dugout canoe for subsistence and social visitation. We, therefore, measured both natural mobility and navigational performance in 305 Tsimané adults, to assess differences with age and to test whether greater mobility was related to better navigational performance across the lifespan. Daily (...) mobility was measured by GPS tracking, regional mobility through interview, navigational performance through pointing accuracy and perspective taking in environmental space, and mental rotation by a computerized task. Although mental rotation and spatial perspective taking declined with age, mobility and pointing accuracy remained high from mid-life through old age. Greater regional mobility was associated with greater accuracy at pointing and perspective taking, suggesting that spatial experience at environmental scales may help maintain navigational performance in later adulthood. (shrink)

More than forty years have passed since Congress, in response to the Civil Rights Movement, enacted sweeping antidiscrimination laws in the Civil Rights Act of 1964, the Voting Rights Act of 1965, and the Fair Housing Act of 1968. As a signal achievement of that legacy, in 2008, Americans elected their first African American president. Some would argue that we have finally arrived at a postracial America, butThe Imperative of Integration indicates otherwise. Elizabeth Anderson demonstrates that, despite progress toward (...) racial equality, African Americans remain disadvantaged on virtually all measures of well-being. Segregation remains a key cause of these problems, and Anderson skillfully shows why racial integration is needed to address these issues. Weaving together extensive social science findings--in economics, sociology, and psychology--with political theory, this book provides a compelling argument for reviving the ideal of racial integration to overcome injustice and inequality, and to build a better democracy. -/- Considering the effects of segregation and integration across multiple social arenas, Anderson exposes the deficiencies of racial views on both the right and the left. She reveals the limitations of conservative explanations for black disadvantage in terms of cultural pathology within the black community and explains why color blindness is morally misguided. Multicultural celebrations of group differences are also not enough to solve our racial problems. Anderson provides a distinctive rationale for affirmative action as a tool for promoting integration, and explores how integration can be practiced beyond affirmative action. -/- Offering an expansive model for practicing political philosophy in close collaboration with the social sciences, this book is a trenchant examination of how racial integration can lead to a more robust and responsive democracy. (shrink)

Feminist epistemology and philosophy of science studies the ways in which gender does and ought to influence our conceptions of knowledge, the knowing subject, and practices of inquiry and justification. It identifies ways in which dominant conceptions and practices of knowledge attribution, acquisition, and justification systematically disadvantage women and other subordinated groups, and strives to reform these conceptions and practices so that they serve the interests of these groups. Various practitioners of feminist epistemology and philosophy of science argue that dominant (...) knowledge practices disadvantage women by (1) excluding them from inquiry, (2) denying them epistemic authority, (3) denigrating their “feminine” cognitive styles and modes of knowledge, (4) producing theories of women that represent them as inferior, deviant, or significant only in the ways they serve male interests, (5) producing theories of social phenomena that render women's activities and interests, or gendered power relations, invisible, and (6) producing knowledge (science and technology) that is not useful for people in subordinate positions, or that reinforces gender and other social hierarchies. Feminist epistemologists trace these failures to flawed conceptions of knowledge, knowers, objectivity, and scientific methodology. They offer diverse accounts of how to overcome these failures. They also aim to (1) explain why the entry of women and feminist scholars into different academic disciplines, especially in biology and the social sciences, has generated new questions, theories, and methods, (2) show how gender has played a.. (shrink)

Permissivism is the thesis that, for some body of evidence and a proposition p, there is more than one rational doxastic attitude any agent with that evidence can take toward p. Proponents of uniqueness deny permissivism, maintaining that every body of evidence always determines a single rational doxastic attitude. In this paper, we explore the debate between permissivism and uniqueness about evidence, outlining some of the major arguments on each side. We then consider how permissivism can be understood as an (...) underdetermination thesis, and show how this moves the debate forward in fruitful ways: in distinguishing between different types of permissivism, in dispelling classic objections to permissivism, and in shedding light on the relationship between permissivism and evidentialism. (shrink)

Traditional theistic arguments conclude that God exists. Pragmatic theistic arguments, by contrast, conclude that you ought to believe in God. The two most famous pragmatic theistic arguments are put forth by Blaise Pascal (1662) and William James (1896). Pragmatic arguments for theism can be summarized as follows: believing in God has significant benefits, and these benefits aren’t available for the unbeliever. Thus, you should believe in, or ‘wager on’, God. This article distinguishes between various kinds of theistic wagers, including finite (...) vs. infinite wagers, premortem vs. postmortem wagers, and doxastic vs. acceptance wagers. Then, we’ll turn to the epistemic-pragmatic distinction, and discusses the nuances of James’ argument, and how views like epistemic permissivism and epistemic consequentialism provide unique “hybrid” wagers. Finally, we’ll cover outstanding objections and responses. (shrink)

Recent defenses of same-sex marriage and polygamy have invoked the liberal doctrines of neutrality and public reason. Such reasoning is generally sound but does not go far enough. This paper traces the full implications of political liberalism for marriage. I argue that the constraints of public reason, applied to marriage law, entail ‘minimal marriage’, the most extensive set of state-determined restrictions on marriage compatible with political liberalism. Minimal marriage sets no principled restrictions on the sex or number of spouses and (...) the nature and purpose of their caring relationships, nor on which marital rights are exchanged, and whether they are exchanged reciprocally or asymmetrically. Minimal marriage supports adult care networks, urban tribes, friendships, and other forms of relationships as well as ‘traditional’ marriages. I provide a publically justifiable rationale for a legal framework supporting non-dependent caring relationships between adults. The argument is that caring relationships are primary goods, and that liberal justice accordingly requires legal frameworks supporting caring relationships. Minimal marriage is one such framework. (shrink)

In this project I am concerned with the extent to which conceptual engineering happens in domains outside of philosophy, and if so, what that might look like. Specifically, I’ll argue that...

A new resolution of the mind-body problem that reconciles materialism and idealism.

On a rainy day in May 1988, a lowland gorilla named Willie B. stepped outdoors for the first time in twenty-seven years, into a new landscape immersion exhibit. Born in Africa, Willie B. had been captured by an animal collector and sold to a zoo. During the decades he spent in a cage, zoos stopped collecting animals from the wild and Americans changed the ways they wished to view animals in the zoo. Zoos developed new displays to simulate landscapes like (...) the Amazon River basin and African forests. Exhibits similar to animals' natural habitats began to replace old-fashioned animal houses. But such displays are only the most recent effort of zoos to present their audiences with an authentic experience of nature. Since the first zoological park opened in the United States in Philadelphia in 1874, zoos have promised their visitors a journey into the natural world. And for more than a century they have been popular places for education and recreation: every year more than 130 million Americans go to zoos to look at the animals and enjoy a day outdoors. The first book-length history of American zoos, Animal Attractions examines the meaning of nature in the city by looking at the ways zoos have assembled and displayed their animal collections. Situated literally and culturally in the American middle landscape, zoos are concrete expressions of longstanding tensions between wildness and civilization, science and popular culture, education and entertainment. In their efforts to promote nature appreciation, they reveal much about how our culture envisions the natural world and the human place in it and how these ideas have changed. (shrink)

On the phenomenal view of evidence, seemings are evidence. More precisely, if it seems to S that p, S has evidence for p. Here, I raise a worry for this view of evidence; namely, that it has the counterintuitive consequence that two people who disagree would rarely, if ever, share evidence. This is because almost all differences in beliefs would involve differences in seemings. However, many literatures in epistemology, including the disagreement literature and the permissivism literature, presuppose that people who (...) disagree often do share evidence. I conclude that this is a reason to question the phenomenal view of evidence. (shrink)

This chapter contains sections titled: Rosen's Argument Objections to Rosen's Argument The Significance of the Narrower Conclusion My Proposed View Objections to the Proposed View Understanding My Disagreement with Rosen Conclusion.

In this article, we advance the perspective that distinct emotions amplify different moral judgments, based on the emotion’s core appraisals. This theorizing yields four insights into the way emotions shape moral judgment. We submit that there are two kinds of specificity in the impact of emotion upon moral judgment: domain specificity and emotion specificity. We further contend that the unique embodied aspects of an emotion, such as nonverbal expressions and physiological responses, contribute to an emotion’s impact on moral judgment. Finally, (...) emotions play a key role in determining which issues acquire moral significance in a society over time, in a process known as moralization (Rozin, 1999). The implications of these four observations for future research on emotion and morality are discussed. (shrink)

What is faith? How is faith different than belief and hope? Is faith irrational? If not, how can faith go beyond the evidence? This chapter introduces the reader to philosophical questions involving faith and reason. First, we explore a four-part definition of faith. Then, we consider the question of how faith could be rational yet go beyond the evidence.

As algorithms have become ubiquitous in consequential domains, societal concerns about the potential for discriminatory outcomes have prompted urgent calls to address algorithmic bias. In response, a rich literature across computer science, law, and ethics is rapidly proliferating to advance approaches to designing fair algorithms. Yet computer scientists, legal scholars, and ethicists are often not speaking the same language when using the term ‘bias.’ Debates concerning whether society can or should tackle the problem of algorithmic bias are hampered by conflations (...) of various understandings of bias, ranging from neutral deviations from a standard to morally problematic instances of injustice due to prejudice, discrimination, and disparate treatment. This terminological confusion impedes efforts to address clear cases of discrimination. -/- In this paper, we examine the promises and challenges of different approaches to disambiguating bias and designing for justice. While both approaches aid in understanding and addressing clear algorithmic harms, we argue that they also risk being leveraged in ways that ultimately deflect accountability from those building and deploying these systems. Applying this analysis to recent examples of generative AI, our argument highlights unseen dangers in current methods of evaluating algorithmic bias and points to ways to redirect approaches to addressing bias in generative AI at its early stages in ways that can more robustly meet the demands of justice. (shrink)

This paper defends the avowal view of self-deception, according to which the self-deceived agent has been led by the evidence to believe that ¬p and yet is sincere in asserting that p. I argue that the agent qualifies as sincere in asserting the contrary of what they in the most basic sense believe in virtue of asserting what they are committed to believing. It is only by recognizing such commitments and distinguishing them from the more basic beliefs whose rational regulation (...) is automatic that the tension between the self-deceived agent’s actions and assertions can be explained in a core subset of cases of self-deception. (shrink)

Credences are similar to levels of confidence, represented as a value on the [0,1] interval. This chapter sheds light on questions about credence, including its relationship to full belief, with an eye toward the empirical relevance of credence. First, I’ll provide a brief epistemological history of credence and lay out some of the main theories of the nature of credence. Then, I’ll provide an overview of the main views on how credences relate to full beliefs. Finally, I’ll turn to the (...) empirical, and suggest some ways that cognitive science does and could answer questions about credence, such as what credences one has, how credences relate to beliefs, and the extent to which we can control our credences. (shrink)

Epistemic paternalism is the practice of interfering with someone’s inquiry, without their consent, for their own epistemic good. In this chapter, I explore the relationship between epistemic paternalism and two other epistemological theses: epistemic permissivism and standpoint epistemology. I argue that examining this relationship is fruitful because it sheds light on a series of cases in which epistemic paternalism is unjustified and brings out notable similarities between epistemic permissivism and standpoint epistemology.

The aim of this study was to explore the obligations of nurses and physicians in providing end-of-life care. Nineteen nurses and 11 physicians from a single newborn intensive care unit participated. Using content analysis, an overarching obligation of creating the best possible experience for infants and parents was identified, within which two categories of obligations (decision making and the end of life itself) emerged. Obligations in decision making included talking to parents and timing withdrawal. End-of-life obligations included providing options, preparing (...) parents, being with, advocating, creating peace and normalcy, and providing comfort. Nurses and physicians perceived obligations in both categories, although nurse obligations centered on the end of life while physician obligations focused on decision making. The findings demonstrate that, although the ultimate goal is shared by both disciplines, the paths to achieving that goal are often different. This has important implications for collaboration, communication, and improving the end of life. (shrink)

Ruins are evocative structures, and we value them in different ways for the various things they mean to us. Ruins can be aesthetically appreciated, but they are also valued for their historical importance, what they symbolize to different cultures and communities, and as lucrative objects, i.e., for tourism. However, today an increasing number of ancient ruins have been damaged or completely destroyed by acts of war. In 2001 the Taliban struck a major blow to cultural heritage by blasting the Bamiyan (...) Buddhas out of existence. They were not easy to destroy. This direct targeting of cultural property might change our attitudes toward conservation practices. Francesco Bandarin, the UNESCO assistant director-general for culture, states, “Deliberate destruction has created a new context. At the time, Bamiyan was an exceptional case.” Bandarin’s comments notwithstanding, the destruction of cultural property in times of war is not new. Not only is there relatively settled international law prohibiting the looting of cultural property during times of war, we can find examples of intentional destruction of cultural property from thousands of years ago. In this paper I would like to focus on one particular case, that of the Mỹ Sơn Archaeological Sanctuary, in the Socialist Republic of Việt Nam. Mỹ Sơn is the foremost Champa archaeological site and the largest archaeological site in Việt Nam. The largest temple (kalan) at Mỹ Sơn, A1, was destroyed in a US bombing raid in 1969. In this paper I highlight different approaches to architectural cultural heritage preservation in terms of reconstruction, restoration, and ruination -- with an eye to applying these approaches to the remains of the A1 temple in Mỹ Sơn. I briefly discuss the history of Mỹ Sơn before providing some reasons to believe that we should allow A1 to ruinate. (shrink)

I explore how rational belief and rational credence relate to evidence. I begin by looking at three cases where rational belief and credence seem to respond differently to evidence: cases of naked statistical evidence, lotteries, and hedged assertions. I consider an explanation for these cases, namely, that one ought not form beliefs on the basis of statistical evidence alone, and raise worries for this view. Then, I suggest another view that explains how belief and credence relate to evidence. My view (...) focuses on the possibilities that the evidence makes salient. I argue that this makes better sense of the difference between rational credence and rational belief than other accounts. (shrink)

This chapter contains sections titled: Allotment Associations The Allotment Site New Relationships: Councillors and Gardeners Conclusions Notes.

This book provides a reconstructive and critical interpretation of Sartre’s mature dialectical ethics. Taken together, as Sartre intended, the posthumously published key texts demonstrate that the ultimate goal of praxis is “integral humanity” and that “making the human” is always possible because the means to humanity can always be invented.