On the Universality of Human Nature and the Uniqueness of the Individual: The Role of Genetics and Adaptation

The concept of a universal human nature, based on a species-typical collection of complex psychological adaptations, is defended as valid, despite the existence of substantial genetic variation that makes each human genetically and biochemically unique. These apparently contradictory facts can be reconciled by considering that (a) complex adaptations necessarily require many genes to regulate their development, and (b) sexual recombination makes it improbable that all the necessary genes for a complex adaptation would be together at once in the same individual, if genes coding for complex adaptations varied substantially between individuals. Selection, interacting with sexual recombination, tends to impose relative uniformity at the functional level in complex adaptive designs, suggesting that most heritable psychological differences are not themselves likely to be complex psychological adaptations. Instead, they are mostly evolutionary by-products, such as concomitants of parasite-driven selection for biochemical individuality. An evolutionary approach to psychological variation reconceptualizes traits as either the output of species-typical, adaptively designed development and psychological mechanisms, or as the result of genetic noise creating perturbations in these mechanisms.     

Mate choice turns cognitive

Evolutionary psychology has revolutionized research on human mate choice and sexual attraction in recent years, combining a rigorous Darwinian framework based on sexual selection theory with a loosely cognitivist orientation to task analysis and mechanism modelling. This hard Darwinian, soft computational approach has been most successful at revealing the adaptive logic behind physical beauty, demonstrating that many sexual cues computed from face and body shape are not arbitrary, but function as reliable indicators of phenotypic and genetic quality. The same approach could be extended from physical to psychological cues if evolutionary psychology built stronger ties with personality psychology, psychometrics and behavioral genetics. A major challenge for mate choice research is to develop more explicit computational models at three levels, specifying: (1) the perceptual adaptations that register sexual cues given sensory input, (2) the judgment adaptations that integrate multiple cues into assessments of overall attractiveness, and (3) the search strategies that people follow in trying to form mutually attracted pairs. We describe both recent efforts and possible extensions in these directions. The resulting confluence between evolutionary principles, cognitive models and game-theoretic insights can put mate choice research at the vanguard of an emerging `evolutionary cognitive science' more concerned with domain-specific mental adaptations than with domain-general intelligence.     

Evaluating evidence of psychological adaptation: how do we know one when we see one?

Evolutionary psychologists argue that human nature contains many discrete psychological adaptations. Each adaptation is theorized to have been functional in humans' ancestral past, and empirical evidence that an attribute is an adaptation can come from showing it possesses complexity, efficiency, universality, and other features of special design. In this article, we present a tutorial review of the evidentiary forms that evolutionary psychologists commonly use to document the existence of human adaptations. We also present a heuristic framework for integrating and evaluating cross-disciplinary evidence of adaptation. Pregnancy sickness, incest avoidance, men's desires for multiple sex partners, and an easily learned fear of snakes are evaluated as possible human adaptations using this framework. We conclude that future research and teaching in evolutionary psychology would benefit from more fully utilizing cross-disciplinary frameworks to evaluate evidence of human adaptation.     

Integrating childhood in the family context: Commentary on Bjorklund,Periss and Causey

Bjorklund, Periss and Causey use an evolutionary developmental perspective to highlight several reasons as to why children should be allowed to be children. Childhood is not just a training ground for adulthood, but there is a unique integrity to this phase of life. Bjorklund and colleagues suggest that several of the immature behaviours observed in children are adaptive in their own right providing children with immediate benefits for their particular age and do not necessarily (only) serve the function of providing benefits for the child later in development. The concept of ontogenetic adaptations is useful in providing a new lens on which to view infants, children, adolescents and even adults. In this commentary I focus on three issues related to their work: (1) the possibility that the overestimation tasks reviewed in their paper do not empirically verify that overestimation is related to perseverance in learning; (2) whether ontogenetic adaptations are gender specific; and (3) the costs of this extensive immaturity and how inappropriate overinvestment of parents may reflect a maladaptive response to low fertility in a resource-rich environment.     

Evolutionary Psychology： How Psychological Mechanisms Shaped by Natural Selection for Ancestral Environments Produce Current Behaviours

The central purpose of this paper is to explain how Darwin′s theory of evolution by natural selection can be used in understanding current human behaviour. First, Darwin′s logic is briefly described. Development is an important issue when applying evolutionary theory to human behaviour. The notion of innate developmental organization of psychological mechanisms is introduced. The possible social and political outcomes produced when different levels of innate developmental organization are paired with differ...     

Comparative evolutionary psychology of sperm competition

A comparative evolutionary psychological perspective predicts that species that recurrently faced similar adaptive problems may have evolved similar psychological mechanisms to solve these problems. Sperm competition provides an arena in which to assess the heuristic value of such a comparative evolutionary perspective. The sperm competition that results from female infidelity and polyandry presents a similar class of adaptive problems for individuals across many species. The authors first describe mechanisms of sperm competition in insects and in birds. They suggest that the adaptive problems and evolved solutions in these species provide insight into human anatomy, physiology, psychology, and behavior. The authors then review recent theoretical and empirical arguments for the existence of sperm competition in humans and discuss proposed adaptations in humans that have analogs in insects or birds. The authors conclude by highlighting the heuristic value of a comparative evolutionary psychological approach in this field.     

Children,childhood, and development in evolutionary perspective

We examine children, childhood, and development from an evolutionary perspective. We begin by reviewing major assumptions of evolutionary–developmental psychology, including the integration of “soft” developmental systems theory with ideas from mainstream evolutionary psychology. We then discuss the concept of adaptive developmental plasticity and describe the core evolutionary concept of developmental programming and some of its applications to human development, as instantiated in life history theory and the theory of differential susceptibility to environmental influence. We then discuss the concept of adaptation from an evolutionary–developmental perspective, including ontogenetic and deferred adaptations, and examine the development of some adaptations of infancy and childhood from the domains of folk psychology and folk physics. We conclude that evolutionary theory can serve as a metatheory for developmental science.     

进化发展心理学：发展中的人类本性

进化发展心理学研究社会能力与认知能力发展背后的基因与环境机制,以及基因与环境机制在特定社会文化中的表现。进化发展心理学探讨的主要问题与设计到的主要概念包括：（1）自然选择在毕生发展的早期阶段发挥作用;（2）进化发展心理学特别重视适应在婴儿期及儿童期发展中的作用;（3）儿童期的延长有助于儿童学习人类社会的复杂性;（4）发展背景的方法可以用来理解成人外显行为的进化起源;（5）基因与环境因素相互影响约束个体发展;（6）认知能力与行为活动敏感于早期环境,但二者发展也具有可塑性     

Development Through Work and Play

Adopting a work-play framework that attends to the adaptive, self-enhancing potential of play in work and human development contributes to an enhanced conceptualization of careers, both within career theory generally and the developmental perspective on careers specifically. Such a framework also promotes investigations of the connections between these life domains. Five proposals are made to imbue the developmental perspective on careers with a work-play fusion. These proposals examine how a work-play integration in vocational development theory, research, and counseling practice can foster optimal human development and therein aim to advance a revitalized developmental paradigm of career. Ultimately, theory construction and research inquiry that comprehends and investigates an integration of life roles in the domains of work and play could foster adaptability in human life-span development.     

The “Religiously Mediated Change” of 11 Gay Men: A Case of Unexceptional Sublimation

This article addresses the current controversy in churches concerning homosexuality, especially the claim that the sexual orientation of homosexual males may be changed through religious interventions. Following personal accounts of the uses of “religiously mediated change” discourse in discussions of homosexuality in mainstream Protestant churches, the article focuses on the frequently cited article by Pattison and Pattison (1980) that evaluates 11 white males “who claimed to have changed sexual orientation from exclusive homosexuality to exclusive heterosexuality through participation in a Pentecostal church fellowship” (p. 1553). We evaluate the article in terms of its research design, findings, and conclusions; discuss its claim that the men “changed” in light of Freud’s concept of the sublimation of socially unacceptable psychic energies; and assess the Pentecostal church’s contention that homosexuality is an expression of psychological immaturity. We conclude that in light of the fact that the sublimation of sexual desires and impulses is a common experience among men, and homosexuality is not an expression of psychological immaturity, “religiously mediated change” discourse needs to go beyond claiming that change is possible and present a convincing argument that the change, if effected, will have demonstrable benefits to humanity that would not be realizable if the change did not occur.     

The Evolution of Stalking

We propose that stalking tactics have been shaped by evolutionary processes to help solve mating problems. These include: (1) acquiring new mates, (2) guarding existing mates to prevent defection, (3) fending off mate poachers, (4) poaching someone else’s mate, (5) interfering with intrasexual competitors, (6) reacquiring ex-mates, (7) sexual exploitation and predation, and (8) guarding kin from sexual exploitation. We hypothesize several, gender-differentiated design features of psychological adaptations, including sensitivity to adaptive problems for which stalking was an ancestral solution and cognitive biases that function to motivate and perpetuate stalking behaviors. Although often abhorrent, cost-inflicting, and illegal, stalking sometimes enables successful adaptive solutions to problems of mating and within-gender competition faced by both men and women.     

Adaptive Flexibility,Cooperation, and Prosocial Motivations: The Emotional Foundations of Becoming Human

ABSTRACT

Humans are highly motivated to cooperate, share, and help others. The evidence for this claim comes from examining prosocial behaviors as they show up very early in development, and by systematic comparisons between young children and mankind’s closest great ape relatives. Highly cooperative and social species that care for kin and nonkin members of their group are rare in nature and call for an evolutionary explanation. Based on the work of Michael Tomasello and others, I offer a possible explanation based on a two-phase model. The first phase of the evolution of cooperation and sociability is induced by climate change taking place during a critical period of human evolution. Climate variability produced shifts from wet, monsoon landscapes to dry and arid landscapes in East Africa, the home of many of humanity’s ancestors. Shifting environmental conditions produced selective pressures favoring adaptive flexibility and forced cooperation and interdependence among our hominin ancestors, who had to search for food (cooperative foraging) and protect each other from predators. Forced interdependence came together with two biosocial adaptations: a cooperative form of raising young children (cooperative breeding) and long-term mating patterns (pair bonding). These biosocial adaptations help explain how the species might have begun to develop emotionally modern intersubjective mind-reading capacities. During a second phase of the evolution of cooperation, the emergence of shared social norms, social reputations, the cumulative effects of cultural knowledge passed on over many generations, and cultural differences produced a new form of evolution: cultural evolution. In turn, cultural evolution produced a new cycle of innovations consisting of symbolic capacities and language. When it comes to psychotherapy, the same conditions that made one human—adaptive flexibility, cooperation, helping others and mutual enjoyment in sharing—are the same conditions that make for a strong therapeutic alliance.     

发展情境论——一种新的发展系统理论

发展情境论（Developmental Contextualism）是发展系统理论体系中的一种具有代表性的理论。该理论认为人的发展是通过发展中的个体与其所处情境间的持续交互作用实现的,个体的发展变化过程在本质上是或然渐成性的。该理论不仅更系统地概括了影响人发展的时间和空间因素,而且在交互作用观点的基础上提出了循环影响的研究取向。同时,发展情境论认为人的可塑性特点为干预个体的发展提供了可能,并进一步提出了干预的思路,即通过建立和调整个体与所处情境的拟合优度模型来实现个体和所处情境的积极发展。     

Biological perspectives on the effects of early psychosocial experience

There is much current interest in how adverse experiences early in life might affect certain elements of physiological, behavioral, and psychological functioning across the lifespan. Recent conceptual frameworks for studying the effects of early experience have involved constructs such as experience-expectant, experience-dependent, and experience-adaptive plasticity. The latter construct is related to comparative models of developmental programming which posit the persistence of biological adjustments to the early caregiving environment. We briefly review such models and their translational implications. We then turn to human development and focus on the effects of large changes in children’s life courses as tests of hypotheses related to early experience effects. In particular, the effect of early institutionalization on children’s brain and behavioral development after changes to adoptive families or foster care is used as an example of a research area in which programming hypotheses have been proposed.     

Cybernetic Big Five Theory

Cybernetics, the study of goal-directed, adaptive systems, is the best framework for an integrative theory of personality. Cybernetic Big Five Theory attempts to provide a comprehensive, synthetic, and mechanistic explanatory model. Constructs that describe psychological individual differences are divided into personality traits, reflecting variation in the parameters of evolved cybernetic mechanisms, and characteristic adaptations, representing goals, interpretations, and strategies defined in relation to an individual’s particular life circumstances. The theory identifies mechanisms in which variation is responsible for traits in the top three levels of a hierarchical trait taxonomy based on the Big Five and describes the causal dynamics between traits and characteristic adaptations. Lastly, the theory links function and dysfunction in traits and characteristic adaptations to psychopathology and well-being.     

超越传统：动态进化心理学研究进展

立足于基本适应目标与决策原则的功能分析,致力于心理过程多维度的动态考察,动态进化心理学在坚持适应主义原则基础上,将基因与经验、环境同时纳入心理发展解释框架,更为彻底地贯彻了有机体与环境交互作用观,在一定程度上克服了传统进化心理学的局限。但由于忽略社会实践的作用,它所展示的更多的是生物学意义上的人的发展图景,对心理过程的动态分析亦难以挣脱形而上学的桎梏。