In conversation with J. Philippe Rushton

The interview covers Rushton’s background in England, South Africa, and Canada, his education at the University of London (B.Sc., 1970; Ph.D., 1973), and his early research (1970–1980) on the social learning of generosity in 7- to 11-year olds. In his first book, Altruism, socialization, and society (1980), Rushton solved two “anomalies” for his social learning perspective—altruism in animals and traits in people—causing a “paradigm shift” for him toward sociobiology. He spent January to June 1981 at the University of California, Berkeley, to study the longitudinal stability of personality traits like altruism. There, he was influenced by Jensen’s work on g and race differences in rate of maturation and two-egg twinning. Subsequently, Rushton found that across 60 variables, Europeans fall between East Asians and Africans, closer to East Asians. He extrapolated Wilson’s (fast–slow) r-K life history theory to explain the pattern. Also covered is Rushton’s research on the heritability of altruism, and Genetic Similarity Theory explaining assortative mating and ethnic nepotism. Spouses and best friends are as similar as half-siblings and people randomly chosen from the same ethnic group are as related as first cousins. Altruism follows lines of similarity to replicate genes effectively. Rushton’s research on creativity is described.     

J.P. Rushton’s contributions to the study of altruism

This essay describes Rushton’s work on altruism over the past 40 years. During his academic career, he changed his theoretical approach from social learning theory to trait theory to sociobiology. My essay includes five sections. The first gives an overview of Rushton’s work on altruism. The second reviews his early work based on social learning theory. His laboratory and naturalistic experiments led him to conclude that altruism could be increased by exposure to models exemplifying the behavior, and that, once engaged in, the behavior could be durable over months and generalizable across situations. The third section discusses his work on the genetic foundation of altruism with social biology including his twin studies of prosocial behaviors using different age groups of both western and Asian samples. He concluded that about 50% of the variance in prosocial behaviors is heritable. The fourth section will describe altruism as part of the general factor of personality, the apex of the personality hierarchy. The last section summarizes my review of Rushton’s work on altruism.     

ALTRUISM IN SUICIDE TERROR ORGANIZATIONS

In recent years, much has been learned about the strategic and organizational contexts of suicide attacks. However, motivations of the agents who commit them remain difficult to explain. In part this is because standard models of social learning as well as Durkheimian notions of sacrificial behavior are inadequate in the face of the actions of human bombers. In addition, the importance of organizational structures and practices in reinforcing commitment on the part of suicide recruits is an under-explored factor in many analyses. This essay examines the potential applicability of evolutionary models of altruism to the understanding of commitment to suicide on the part of terrorist organizational recruits. Three evolutionary models of sacrificial behavior in nonhuman species and many categories of human behavior are explored cross-organizationally: reciprocity, inclusive fitness theory, and induced altruism. Reciprocal altruism is unlikely to be a major motivator in suicide attacks because the costs exhibited by attackers are too high to be adequately compensated. However, the role of evolved self-deception in perceptions of personal death, and thus of rewards in the afterlife, is potentially illuminating. Inclusive fitness theory can help explain the motivations of attackers because rewards to kin often are offered by organizations to suicide recruits. However, suicide bombers also often act out of revenge for the loss of or injury to relatives, and inclusive fitness theory generally, as well as more specific theoretical models of retaliatory aggression, may not adequately account for the bombers' actions. Predictions from induced altruism theory appear to be well supported because suicide terror organizations tend to be tightly structured around practices intended to maintain and reinforce commitment though the manipulation of kinship-recognition cues.     

亲缘利他的不对称性：进化视角的分析

内含适应性理论是进化生物学和进化心理学中最重要的理论之一。该理论假设, 个体的亲属是其适应性的载体, 但亲属们的价值有所不同。大量研究发现, 亲属的利他行为表现出不对称性, 即遗传相关系数相同的亲属表现出不同的利他倾向。如祖父母对孙辈的投资中, 外祖母往往投入最多, 外祖父和祖母次之, 祖父投入最少。研究者用内含适应性理论来解释这种亲缘利他差异, 进而提出了“父亲身份不确定性”等具体的进化假设。未来研究中, 国内研究者应在正确理解内含适应性理论的基础上, 更多关注亲缘利他的不对称性, 采用多种数据采集方法和统一的评定指标。     

RALPH WENDELL BURHOE AND BEYOND: PROPOSALS FOR AN AGENDA

Abstract. This paper deals with Ralph Wendell Burhoe's scientific theology and his theory of altruism. Its task is a critical examination of some of the main aspects of Burhoe's approach within the dialogue between science and theology; its goal is to enhance his vision. In the first part I argue that Burhoe's concept of God can be related to the Christian concept of a God of love through his theory of altruism. The second part deals with Burhoe's way of yoking religion and science. I apply insights of evolutionary epistemology as well as Philip Hefner's fruitful suggestion that Burhoe's enterprise is unavoidably metaphysical. In the last part, I investigate Burhoe's philosophy of science and the dominant role of Western culture, including the Judeo-Christian tradition, in Burhoe's thought. Incorporation of a more critical attitude toward science within Burhoe's positivistic approach is suggested.     

Evolution,green beards,and skin hue wage discrimination

This paper provides an evolutionary rationale for both interracial and intraracial wage differentials by examining the implications of white employers mediating their employer‐employee relationships on the basis of genetic similarity. If in organized labor markets; relationships mediated through genetic similarity are optimal in terms of Darwinian fitness, a fundamental evolutionary implication is that the Marginal Rate of Substitution (MRS) in Darwinian fitness holding extended fitness constant equals the MRS in preferences holding utility constant. Given such an evolutionary equilibrium, results are derived showing that the strength of tastes for discrimination depends upon the skin hue of non‐white workers. The rationale established for racial wage differentials is that where skin hue serves to indicate genetic similarity between employer and employee, wage differentials emerge that are a function of skin hue.     

Social closeness of MZ and DZ twin parents towards nieces and nephews

Twins' marriages to non‐twins yield genetically and socially informative kinships. Monozygotic (MZ) twins' genetic identity makes them ‘genetic parents’ of their nieces/nephews, and their nieces/nephews their ‘genetic children’. The present study is the first to apply twin‐family models to study social relatedness. Analyses of twin families (MZ: N = 248; DZ: N = 75) tested evolutionary‐based concepts concerning social closeness, perceived similarity and caretaking. Hypotheses based on Hamilton's inclusive fitness theory were supported: MZ twin aunts/uncles expressed greater social closeness towards their nieces/nephews than DZ twin aunts/uncles; and female twins from same‐sex pairs expressed greater closeness towards their nieces/nephews than male twins from same‐sex pairs. This study underlines benefits of associations between behavioural‐genetic and evolutionary psychological theories, methods and interpretations. Copyright © 2007 John Wiley & Sons, Ltd.     

Children's developmental understanding of ethnicity and race

Research on children's development of ethnic cognition from preschool through adolescence was reviewed. This review was based on research conducted on (a) children's ethnic cognition, (b) children's social-cognitive development, (c) children's understanding of a variety of social status, and (d) Quintana's model of children's understanding of ethnicity. Four developmental levels were described: Integration of affective and perceptual understanding of ethnicity (level 0), literal understanding of ethnicity (level 1), social and nonliteral perspective of ethnicity (level 2), and ethnic-group consciousness and ethnic identity (level 3). For each developmental level, applied implications were discussed.     

Inter‐confessional relations in nineteenth‐century Syria: Damascus,Homs and Hama compared

This article examines relations between Muslims and Christians in Syria during the later Ottoman period in light of social science literature on ethnicity and ethnic conflict. It argues that the social science literature illuminates the historiography of this question by bringing to the fore historians’ underlying assumptions about religion and ethnicity. By comparing three Syrian towns with contrasting histories of inter‐communal relations, the article argues that religious consciousness in Syria ought not to be understood in strictly primordialist terms. Rather, a more circumstantialist approach is needed where specific conditions transform an otherwise unproblematic situation of religious diversity into one of inter‐confessional hatred and strife.     

Diversity Science: Why and How Difference Makes a Difference

This article proposes that addressing the complex ethnic and racial issues of the 21st century will require a diversity science. A diversity science will consider how people create, interpret, and maintain group differences among individuals, as well as the psychological and societal consequences of these distinctions. A diversity science will recognize that these significant social distinctions (in the case of this article, race and ethnicity) are not simply natural, neutral, or abstract. Instead they are created and re-created in the process of everyday social interactions that are grounded in historically derived ideas and beliefs about difference and in a set of practices and institutions that reflect these ideas and beliefs and that therefore shape psychological experience and behavior. According to this “sociocultural” framework, psychological experience and behavior, in turn, reinforce particular cultural and structural realities. As an initial step toward a diversity science, this article reviews the roots and consequences of two examples of how to think about difference, color blindness and multiculturalism. Through this sociocultural lens, intergroup behaviors can be understood as more than just products of individual prejudice. This article also proposes that a comprehensive diversity science requires a critical examination of majority group perspectives, minority group perspectives, and their dynamic interaction beyond the typical Black–White binary. Such a diversity science has the potential to help meaningfully inform race-related policy.     

E.O. Wilson's Conquest of Earth

The publication of Edward O. Wilson's recent book, The Social Conquest of Earth, launches a new missile in the purported warfare between science and religion. The launching-pad is Wilson's embracing of group selection over kin selection to explain the evolutionary success of cooperation and even altruism in complex social groups. Rather than the selfish gene, groups of genetically diverse individuals who cooperate with one another drive evolution toward increased social organization, toward eusociality. Within the field of sociobiology, this is interesting. But Wilson does not stop here. He proceeds to engage in combat with all competing points of view, especially religious points of view. By relegating religion to a primitive stage of evolution and elevating science to an advanced stage, he provides justification for science to eliminate all its enemies and to establish hegemony in the worldview war. This article provides a critical analysis of Wilson's scientific method, especially his attempt to replace creation myths with his own scientized myths of origin. It concludes that Wilson need not do battle, because he could find among theologians allies in his understanding of human nature and his concern to make the world a better moral place.     

Diversity’s harvest: Interactions of diversity sources and communication technology on creative group performance

Our research is based on arguments that three different diversity sources in groups – agreeableness, openness, and ethnicity – might simultaneously possess separation properties that result in social categorization and variety properties that provide non-redundant and value-adding information resources. To help understand how these diversity sources interact with the additive and reductive features of communication technology to impact group creativity, we designed two studies involving computer mediation, nominal group technique, and face-to-face (control) communication. Our findings suggest that agreeableness, openness, and ethic diversity possess both negative separation and positive variety properties. Whereas the separation properties of all three diversity sources, as well as the variety properties of openness diversity, are evident in newly-formed groups, the variety properties of agreeableness and ethnic diversity are only manifest in mature groups. Finally, the additive and reductive features of communication technology interact with all three diversity sources to impact creative group performance in different ways.     

Ideologies of Diversity and Inequality: Predicting Collective Action in Groups Varying in Ethnicity and Immigrant Status

Ideological positions regarding social diversity and status inequality are examined as predictors of people's willingness to engage in collective action. Using social dominance theory and social identity theory, we hypothesized that the relationships between ideology, ethnic identification, and orientation toward collective action will vary depending on the position of one's group. Comparisons were made between four U.S. groups: White natives, White immigrants, Black/Latino natives, and Black/Latino immigrants. Groups differed in their endorsement of social diversity and social inequality, as well as in their orientation toward collective action and their ethnic group identification. For all groups, ethnic identity mediated the link between ideology and collective action, but the valence and magnitude of paths differed as a function of ethnicity and immigrant status. Social diversity was more critical for U.S. immigrants (White and Black/Latino); social inequality accounted for more variance in native-born U.S. groups (although in opposite directions for the two groups).     

Effects of in‐group and out‐group ethnicity on children's attitudes towards members of the in‐group and out‐group

This study tested predictions drawn from social identity development theory (SIDT) (Nesdale, 1999a) concerning the development of young children's ethnic attitudes. 5‐7‐ and 9‐year‐old children (N = 159) participated in a minimal group study in which they were assigned to a team which had higher drawing ability than a competitor team. The team members were revealed to be of the same (Anglo‐Australian) vs. different (Pacific Islander) ethnicity (in‐group ethnicity). The ethnicity of the competitor team was varied in the same way. The children subsequently rated their liking for, and similarity to, the in‐group and the out‐group, and the extent to which they wished to change groups. Children liked in‐group members more than out‐group members. Liking for in‐group members was unaffected by the ethnic composition of the groups, but liking for outgroup members was reduced when the ethnic composition of the out‐group differed from that of the in‐group. Children felt most similar to same‐group, same‐ethnicity members and least similar to different ethnicity out‐group members. The desire to change teams increased with age but there was no intention to align with same ethnicity individuals. The extent to which the findings provide support for SIDT is discussed.     

New Evolutionary Perspectives on Altruism: Multilevel-Selection and Costly-Signaling Theories

Social psychological theories tend to be primarily concerned with the immediate causes of altruism, whereas evolutionary explanations focus more on the origins and ultimate functions of altruistic behavior. Recent developments in the evolutionary psychology of altruism promise an even richer understanding of this important category of social behaviors. Specifically, new perspectives offered by multilevel-selection theory and costly-signaling theory may help to shed light on some of the more problematic issues in the study of altruism.     

Social representations of history in Malaysia and Singapore: On the relationship between national and ethnic identity

Social representations of history were investigated using surveys among university populations of ethnic Malays, Chinese, and Indians in Singapore and Malaysia. Representations of history and historical leaders tended to be hegemonic or consensual, showing low levels of conflict across ethnicity and nationality, even regarding the separation of these two nations. Tendencies towards in-group favoritism and ontogeny were slight, but statistically significant on some measures. National and ethnic identity were positively correlated, with ethnic identity stronger than national identity in Malaysia, and strongest among Malays in Malaysia. National identity was strongest among Chinese in Malaysia, followed by Chinese in Singapore. Results of regression analyses on national identity suggest that ethnicity is more sensitive in Malaysia than in Singapore. Results are interpreted through the frameworks provided by social representations theory and social identity theory. It is argued that hegemonic representations of history are associated with positive correlations between national and ethnic identity.     

民族本质论对跨民族交往的影响——以中国内地的藏族大学生为例

本研究以中国内地的藏族大学生为例,通过两个研究探讨了民族本质论对跨民族交往的影响。研究一通过相关研究发现,民族本质论与接触数量、接触质量呈显著负相关,与民族间的社会距离呈显著正相关;研究二启动了民族本质论和民族建构论,结果发现,相比本质论启动条件,民族建构论启动条件下藏族大学生的跨汉民族交往意愿较高。本研究说明,民族本质论是影响跨民族交往的重要因素,加强民族的社会建构论是促进跨民族交往的重要举措。     

Mind-reading in strategic interaction: The impact of perceived similarity on projection and stereotyping

In social dilemmas, negotiations, and other forms of strategic interaction, mind-reading—intuiting another party’s preferences and intentions—has an important impact on an actor’s own behavior. In this paper, we present a model of how perceivers shift between social projection (using one’s own mental states to intuit a counterpart’s mental states) and stereotyping (using general assumptions about a group to intuit a counterpart’s mental states). Study 1 extends prior work on perceptual dilemmas in arms races, examining Americans’ perceptions of Chinese attitudes toward military escalation. Study 2 adapts a prisoner’s dilemma, pairing participants with outgroup targets. Study 3 employs an ultimatum game, asking male and female participants to make judgments about opposite sex partners. Study 4 manipulates perceived similarity as well as counterpart stereotype in a principal–agent context. Across the studies, we find evidence for our central prediction: higher levels of perceived similarity are associated with increased projection and reduced stereotyping.     

The Diversity Paradox: Opportunities and Challenges of “Contact in Context” Across Development

As the United States diversifies, we review research on both the benefits and challenges of diversity in developmental science. Taking a “contact in context” approach, we focus on how structural and interpersonal diversity influence ethnic/racial developmental processes and outcomes from early childhood to adolescence. We also consider how a child’s own ethnicity/race may shape diversity experiences. We offer this review with the ultimate goal of optimizing benefits and minimizing challenges. We offer a “contact in context” conceptual model that integrates diversity at multiple levels, child ethnicity/race, and developmental changes over time. We conclude with recommendations for future research.     

Personality and occupational markers of ‘solid citizenship’ are associated with having fewer children

Investigating associations between personality and reproductive fitness may reveal the adaptive significance of human behavioural traits. What we dub ‘solid-citizenship’ personality characteristics such as self-control, diligence and responsibility may repay study from an evolutionary perspective as they protect against negative life-outcomes. We explored associations between reproductive fitness and personality questionnaire markers of solid citizenship in 4981 women from four Australian samples. We also examined relations between reproductive fitness and army discharge status, an applied measure of solid citizenship, in 15,283 Vietnam War-era military veterans. In two Australian samples there were significant negative associations between reproductive fitness and personality measures of solid citizenship. Similarly, in the US study honourably discharged servicemen on average fathered significantly fewer children than non-honourably discharged servicemen. Since personality is genetically influenced, our results suggest that genetic variants for solid citizenship may be decreasing in frequency in some populations, in line with other modern findings but in contrast to historical analyses. Causes for this change may include relatively more conscientious women using contraception to prioritise their careers over reproduction and the availability of systematic welfare provisioning.