求偶动机对男性冒险行为倾向的影响

基于风险行为的性选择理论, 通过内隐启动的方法探讨了求偶线索与奖赏线索对两性风险行为报告的影响。研究结果显示, 男性接触求偶线索, 与接触奖赏线索相比, 更有可能进行娱乐领域、健康领域与社会领域的风险行为活动; 而女性接触奖赏线索后, 与求偶线索相比, 更有可能会从事社会领域的风险行为活动; 两性接触求偶线索与奖赏线索后都较少可能从事经济领域的风险行为活动。这些结果符合性选择理论, 说明与求偶有关的信息线索能够诱导男性进行高风险活动, 因为在进化过程中冒险行为可以作为好基因的标志增加男性获得配偶的机会。这些结果还揭示了, 求偶动机对男性冒险行为的诱发作用远胜于外部动机(如金钱奖赏), 因为求偶是人类在长期进化过程中形成的本能需求。     

进化动机影响社会认知的一般特点及过程

进化动机影响社会认知的研究关注社会认知的起源、机能及影响。进化动机影响社会认知的一般特点有(1)特殊性, 如成功地解决求偶问题的机制不能用来解决身体危险有关的问题, (2)灵活性, 如不同类别的环境线索自动地激活与线索类别有关的社会信息。借用传统的社会认知研究方法, 研究者发现特定的线索会启动相应的进化动机(如面孔吸引力启动人们的求偶动机), 进化动机激活后就能引导人们加工有利于这种动机(或目标)实现的信息(如性别相关的风险信息等)。未来的进化动机影响社会认知的研究可以结合积极心理学(positive psychology)与具身认知(embodied cognition)的理论假设, 以产生更有价值的研究成果。     

危机情景下的亲社会行为：求偶动机对危机救助意愿的影响

危机救助指冒着生命危险去保护和拯救他人,这种行为多见于男性,但无法用进化论的个体选择观点解释。本研究基于进化心理学中代价信号理论,探索启动求偶动机对个体在危机情境下的冒险救助意愿的影响。结果表明,启动择偶动机会导致男性的危机救助意愿上升;而女性的危机救助意愿则在启动择偶动机后下降。这一结果支持如下观点：男性在危机情境下冒险救助的行为是一种代价信号行为,具有为吸引异性这一目标服务的功能。     

拿破仑情结的进化：相对身高劣势和求偶动机对男性冒险行为的影响

研究以性选择理论为基础, 探讨了与同性竞争者的相对身高劣势和求偶动机对男性冒险行为的影响。4个研究一致显示, 与同性竞争者存在的身高劣势会导致男性提高自身冒险性; 且高求偶动机水平的男性, 会更多地表现出这种补偿性行为。这些结果提示, 拿破仑情结具有进化的基础, 男性在自身身高与竞争者相比处于劣势时, 采用冒险行为进行补偿是男性用以解决性内竞争和性间竞争问题的一种适应器。     

危机情境下的亲社会行为:求偶动机对危机救助意愿的影响

危机救助指冒着生命危险去保护和拯救他人,这种行为多见于男性,但无法用进化论的个体选择观点解释。本研究基于进化心理学中代价信号理论,探索启动求偶动机对个体在危机情境下的冒险救助意愿的影响。结果表明,启动择偶动机会导致男性的危机救助意愿上升;而女性的危机救助意愿则在启动择偶动机后下降。这一结果支持如下观点:男性在危机情境下冒险救助的行为是一种代价信号行为,具有为吸引异性这一目标服务的功能。     

自闭症谱系障碍社交动机理论：机制及干预探索

自闭症谱系障碍(Autism Spectrum Disorder, ASD)表现为社会交往困难以及重复刻板兴趣或行为。社交动机理论提出ASD个体是由于社交动机缺乏导致的社交障碍。目前该理论缺乏理论元素及结构关系的系统论证, 及基于此理论的低龄ASD儿童群体的研究证据。本研究拟采用心理实验法、眼动及近红外脑成像技术, 探索低龄ASD儿童早期社交奖赏、社交定向异常眼动标记及眶额叶脑区活动的神经机制。此外, 通过音乐奖赏强化学习的干预方式改善该理论的核心元素(社交奖赏), 观测能否改善ASD儿童的社交动机。本研究的开展有望对该理论进行系统验证, 并形成改善社交行为的潜在干预方案。     

女性生理周期与修饰行为的关系

众所周知, 与男性相比, 女性偏爱修饰。通过修饰行为, 提升自身吸引力具有普遍的社会意义。近年来, 一些研究者将女性修饰行为与繁殖目的联系起来, 认为女性修饰行为受到生理周期(主要是排卵期和安全期)的影响。具体而言, 排卵期时, 女性的修饰行为会增强, 缘于同性竞争, 包括竞争资源及配偶; 黄体期时, 启动异性吸引动机也会显著增强女性的修饰动机, 目的可能是保持“异性”对自己及后代的持续“投资”。总之, 上述观点为女性持续存在的、对修饰行为的关注提供了生物学解释。     

风险对两类跨期选择的影响：一项ERP研究

该研究利用ERP技术,采用伴随风险的跨期选择任务比较了两类跨期选择（立即vs.延迟、延迟vs.延迟）,并探究了风险（零风险、低风险、高风险）对两者跨期选择影响的神经动力学机制。ERP结果显示,对于立即vs.延迟和延迟vs.延迟,在N2和N400上前者大于后者,在LPC上后者大于前者;风险对两者在时程上的影响趋于一致。因此,其加工可能是先对奖赏在风险维度上进行折扣,再与延迟时间进行整合形成奖赏预期,而后做出选择。     

“养育脑”网络及其影响因素

“养育脑” (parental brain)是成人响应婴儿刺激(面孔、声音等)时, 大脑中与养育行为密切相关的一系列神经回路的总称, 主要涉及动机-奖赏、共情、情绪调节和执行功能等网络, 眶额皮层、前扣带皮层、前脑岛、杏仁核和辅助运动区等核心脑区。而成人养育经验、催产素和精神障碍特征等因素都会影响“养育脑”网络, 具体表现为育儿经验的增长以及催产素水平的提高促进了成人对婴儿刺激的加工, 而精神障碍则损害了其对婴儿刺激的加工。未来研究可考察追踪“养育脑”在不同时期大脑结构的变化以及多脑间的协调同步。另外, 还需进一步探究父亲异常“养育脑”的神经基础, 重视异常父母的预防和干预以及加强本土化研究。     

社会距离对成败行为性别归因偏差的影响

在陌生人和熟人两种社会距离下,让被试对同、异性成败行为进行归因,考查性别归因偏差现象(对异性美化、对同性贬损的归因)在社会距离上的变化。结果发现:(1)对于成功行为:被试对陌生异性做出的美化归因(能力-运气)显著高于陌生同性,出现性别归因偏差;被试对同、异性好友做出的美化归因差异不显著。(2)对于失败行为:被试对陌生同、异性做出的美化归因(运气-能力)差异不显著;被试对异性好友做出的美化归因显著高于同性,出现性别归因偏差。结论:性别归因偏差,在远社会距离他人表现成功时出现,表现失败时消失;在近社会距离他人表现成功时消失,表现失败时出现。结合相关研究和进化理论对结果进行了讨论。     

Come-ons and Put-offs: Unmarried Students' Strategies for Having and Avoiding Sexual Intercourse

One-hundred and twenty male and 109 female unmarried college students participated in a questionnaire study of actual and expected male-female differences in the use of 10 strategies for having and avoiding sexual intercourse. As predicted, both men and women viewed strategies for having sex as used predominantly by males and strategies for avoiding sex as used predominantly by females. However, sex-role attitudes were unrelated to students' expectations of sexual encounters. Both traditional and profeminist students expected that strategies for having sex would be used predominantly by males and strategies for avoiding sex would be used predominantly by females. It appeared that students still stereotyped having sex as a male goal and avoiding sex as a female goal. Men and women were unexpectedly similar in their personal strategies for influencing a sexual encounter. Both men and women reported using more indirect strategies to have sex and more direct strategies to avoid having sex. These findings suggest that when men and women share the same goals (such as having or avoiding sex), expected differences between male and female influencing agents disappear     

How the sexes perceive each other: Advantages and disadvantages

Two hundred and forty-seven female and 138 male college students completed a survey that asked them to judge the advantages and disadvantages of being a member of the other sex. Both sexes were found to perceive males to have significantly more advantages and significantly fewer disadvantages than females. Men based their judgments of female advantages to a significantly greater extent upon social considerations than women did for males. The reverse was true for disadvantage responses. Multivariate and univariate analyses of the responses within advantage and disadvantage categories revealed several significant differences between the sexes. These findings revealed a complex pattern as to how each sex perceives the other. Discussion relates these differences to differences between the sexes in life experiences and expectations. Suggestions for further research are offered.Appreciation is expressed to Barry Arbuckle and Tina Tanner for their assistance in the coding of the data.     

Mate-selection and the Dark Triad: Facilitating a short-term mating strategy and creating a volatile environment

The current study (N = 242) seeks to establish the relationship between traits known collectively as the Dark Triad - narcissism, psychopathy, Machiavellianism - and mating standards and preferences. Using a budget-allocation task, we correlated scores on the Dark Triad traits with mate preferences for a long-term and short-term mate. Men scoring high on the Dark Triad may be more indiscriminate than most when selecting for short-term mates in order to widen their prospects. Furthermore, those high on the Dark Triad - psychopathy in particular - tend to select for mates based on self-interest, assortative mating, or a predilection for volatile environments. We assessed these correlations when controlling for the Big Five and the sex of the participant. We also tested for moderation by the sex of the participant and mating context. Ramifications and future directions are considered.     

The conceptual structure of sex role stereotypes in college students

This study investigated sex stereotypes as natural language categories. Ten years ago, sex stereotypes were found to have a core-peripheral structure similar to that of the nonevaluative categories studies by Rosch (1973). Changes and stability in these conceptions were studied by having 56 female and 56 male undergraduate students rate 217 adjectives on Likert scales according to how well each adjective represented their own view of typical Men or Women. Mean ratings were analyzed to reveal a structure of core, peripheral, and nonmembers for Men and for Women. As was the case ten years ago, core traits reflected dimensions of “niceness-nurturance” for Women and “potency-strength” for Men. Female students also viewed Women as “competent,” while male students also viewed Women as “socially effective.” Adjectives that constituted the core for one category were generally placed in the periphery for the other category. As compared to ten years ago, the peripheries of the categories were expanded and showed a greater degree of overlap. College students' conceptions of Men and Women are best characterized as overlapping rather than as bipolar opposites. The formation of sex stereotype categories was discussed in terms of cognitive and social learning processes.     

Increasing differentiation of women and men: gender trait analysis 1974-1997

Analysis of the responses of some 4,000 college students showed increasing differentiation in the ratings of gender characteristics of typical women and men, especially with regard to feminine traits. Roughly similar patterns were observed in five other studies using the same gender traits. All studies showed continued or increased sex typing on affectionate and sympathetic. In the present study women became more feminine, and males became less, on all but one of the feminine traits. This increasing differentiation of women and men is not consistent with predictions from the sociocultural model; they are more consistent with those of the evolutionary model.     

Altruism predicts mating success in humans

In order for non‐kin altruism to evolve, altruists must receive fitness benefits for their actions that outweigh the costs. Several researchers have suggested that altruism is a costly signal of desirable qualities, such that it could have evolved by sexual selection. In two studies, we show that altruism is broadly linked with mating success. In Study 1, participants who scored higher on a self‐report altruism measure reported they were more desirable to the opposite sex, as well as reported having more sex partners, more casual sex partners, and having sex more often within relationships. Sex moderated some of these relationships, such that altruism mattered more for men's number of lifetime and casual sex partners. In Study 2, participants who were willing to donate potential monetary winnings (in a modified dictator dilemma) reported having more lifetime sex partners, more casual sex partners, and more sex partners over the past year. Men who were willing to donate also reported having more lifetime dating partners. Furthermore, these patterns persisted, even when controlling for narcissism, Big Five personality traits, and socially desirable responding. These results suggest that altruists have higher mating success than non‐altruists and support the hypothesis that altruism is a sexually selected costly signal of difficult‐to‐observe qualities.     

Body movements of male and female speakers and their influence on perceptions of personality

Men and women score differently on some personality traits and people’s behavior reflects who they are. Therefore, males and females could be expected to express themselves differently on a behavioral level. To test this idea we turned the public performances of speakers (20 female and 20 male) into stick figure movies. Students of the University of Vienna (n = 150) rated these movies on scales measuring the Big Five personality traits. The participants experienced difficulties in ascribing the correct sex to the stick figures. Nevertheless, stick figures representing male speakers received higher ratings for extraversion and emotional stability than stick figure animations of female speakers. In addition, gender stereotypes seemed to influence the participants’ ratings. Agreeableness, for instance, was preferably classified as female trait. In conclusion, our results suggest that body motion conveys social information, that men and women present themselves differently, and that people’s judgments are influenced by gender stereotypes.     

Seeing overweight adults as babies: Physical cues and implications for stigmatization

Human babies not only are reliable triggers of tender feelings and protective tendencies, they also happen to be exceptionally fat compared to the newborns of most other species. These two facts are used to formulate a hypothesis predicting that overweight males, due to their great physical resemblance to babies, not only are perceived as cute, but also are associated with negatively evaluated traits (e.g., immaturity, lack of willpower) that are saliently inconsistent with traits required for adults. In this study, a great many physical features of adult males varying widely in weight were measured and correlated with subjective judgements. Providing preliminary support for the hypothesis, it was found that the features that were correlated with objective and perceived fatness (e.g., circularity of body parts, relatively large head, short and thick neck) also correlated with perceived babyishness. Perceived fatness and babyishness had curvilinear influences on the positive and prosocial appraisal of cuteness, but were primarily negatively related to perceived willpower and beauty. Results are used to formulate an alternative evolutionary perspective on social responses to overweight and obese individuals, emphasizing the uniquely human adaptive value of fatness and the misfiring of the underlying response mechanism under modern conditions of living.     

Female-Male versus Male-Female: Does the Order Affect Stereotyped Trait Attributions?

The traditional male-female ordering found in American society may reinforce stereotypic attributions of traits to the two sexes. This hypothesis was tested by having female and male college students rate female and male stimulus persons on 12 traits after reading story paragraphs that varied the sex, the ages of the stimulus persons, and the order of presenting the stimulus persons. When the male was tested before the female stimulus person (traditional order), each sex received more favorable ratings on traits usually considered socially desirable for the sex. When the female was tested before the male (counter traditional order), female stimulus persons continued to receive more favorable ratings on traits usually associated with females than the male stimulus persons, but they also received more favorable ratings on traits usually associated with males. Trait attributions also differed for the four age groups tested.     

Gender‐role egalitarianism predicts desirable traits of potential marriage partners: A cross‐cultural comparison

We examined whether gender‐role egalitarianism predicted participants' rank‐order preferences for traits in potential marriage partners of the opposite sex, and whether gender‐role egalitarianism mediated cultural differences between participants from North America, Polynesia and East Asia. Participants completed the Sex‐Role Egalitarianism Scale and ranked the following traits in terms of their importance in choosing a potential marriage partner: kindness, physical attractiveness, social level, athleticism, creativity and liveliness. Parallel analyses for male and female participants reveal that traditional males value physical attractiveness more than egalitarian males, and that traditional females value social level more and kindness less than egalitarian females. Gender‐role egalitarianism fully mediated the effect of culture on kindness rankings, but no others. These results expand upon previous findings by accounting for individual differences regarding beliefs about traditional gender roles.