共患难,更同盟:共同经历相同负性情绪事件促进合作行为

4项实验探讨了共同经历相同负性情绪事件,相比单独经历负性情绪事件,是否以及如何促进了个体间的合作。实验1~3分别采用抽奖任务和瑞文推理测验任务操纵负性情绪事件,采用公共物品博弈任务测量合作行为,结果表明,共同经历相同负性情绪事件,相比单独经历负性情绪事件,促进了个体间的合作行为。实验2通过测量归属需要、社会联结和内群体认同,实验3通过操纵归属需要,来考察共同经历相同负性情绪事件促进合作行为的潜在机制,结果表明,共同经历者之间的合作行为受归属需要的驱动,而社会联结和内群体认同不足以对该现象进行解释。实验4通过操纵个体共同经历“相同”和“不同”的负性情绪事件,进一步厘清了,促进个体间的合作是由于“共同经历相同的负性情绪事件”而非“共同经历负性情绪”造成的。研究结果有利于解释小群体的形成,对群体和社会管理亦具有借鉴意义。     

When leader–member exchange differentiation improves work group functioning: The combined roles of differentiation bases and reward interdependence

Drawing on social hierarchy theory, we develop a contingency model of leader–member exchange (LMX) differentiation in which LMX differentiation is positively and negatively related to group cooperation and group social undermining, respectively, when it is based on the group members’ performance, but the relations are reversed (i.e., negative and positive, respectively) when it stems from a leader's personal liking of the members. In addition, we propose that the moderating effects of the performance and personal liking bases of LMX differentiation are magnified by the levels of reward interdependence. Specifically, under a high (vs. low) level of reward interdependence, LMX differentiation based on performance more strongly relates to high group cooperation and low group social undermining, whereas LMX differentiation with a personal liking basis is more likely to decrease group cooperation and increase group social undermining. Group cooperation and social undermining are then hypothesized to convey the three‐way interactive effects of LMX differentiation, its two bases, and reward interdependence on subsequent group performance. Analyses of data from 328 sales groups of a large retailer support the core part of our contingency model of LMX differentiation.     

囚徒困境博弈中对手面部表情对合作行为的影响及其作用机制

3个实验逐步深入地考察了囚徒困境博弈中, 对手的高兴、中性和愤怒面部表情对个体合作行为的影响及相关变量的中介和调节作用。实验1的结果表明, 对手的高兴表情比愤怒表情诱发了更高的合作水平, 且高兴和中性表情均比愤怒表情产生了更高的合作预期, 合作预期中介了面部表情与合作行为的关系; 实验2引入指导语操纵被试的直觉或理性决策模式, 发现实验1的结果仅出现在直觉条件下, 却未出现在理性条件下, 且整体而言直觉决策模式下比理性决策模式下更合作; 实验3采用更加严格的时间压力范式操纵被试的直觉或理性决策模式, 发现除了高兴表情比中性表情也诱发了更多的合作行为外, 其他几乎复制了实验2的结果。基于这些结果, 建立了有调节的中介模型, 以期揭示他人面部表情、合作预期、合作行为及个体决策模式之间的复杂关系。     

Social Value Orientation,Expectations, and Cooperation in Social Dilemmas: A Meta‐analysis

Interdependent situations are pervasive in human life. In these situations, it is essential to form expectations about the others' behaviour to adapt one's own behaviour to increase mutual outcomes and avoid exploitation. Social value orientation, which describes the dispositional weights individuals attach to their own and to another person's outcome, predicts these expectations of cooperation in social dilemmas—an interdependent situation involving a conflict of interests. Yet, scientific evidence is inconclusive about the exact differences in expectations between prosocials, individualists, and competitors. The present meta‐analytic results show that, relative to proselfs (individualists and competitors), prosocials expect more cooperation from others in social dilemmas, whereas individualists and competitors do not significantly differ in their expectations. The importance of these expectations in the decision process is further highlighted by the finding that they partially mediate the well‐established relation between social value orientation and cooperative behaviour in social dilemmas. In fact, even proselfs are more likely to cooperate when they expect their partner to cooperate. Copyright © 2018 European Association of Personality Psychology     

Lead Us (Not) into Temptation: Testing the Motivational Mechanisms Linking Honesty–Humility to Cooperation

Over the past decades, there has been considerable interest in individual differences in cooperative behaviour and how these can be explained. Whereas the Honesty–Humility dimension from the HEXACO model of personality has been identified as a consistent predictor of cooperation, the underlying motivational mechanisms of this association have remained unclear—especially given the confound between the temptation to exploit others and the fear of being exploited as motivational drivers of defection in social dilemmas. In a reanalysis and a new experiment, we tease apart these mechanisms by manipulating the rank order of pay‐offs in a symmetric two‐person game paradigm, essentially implementing the classic prisoner's dilemma, stag hunt, and chicken games. Results revealed that Honesty–Humility predicted cooperation specifically in the games in which temptation was a potential motivator of defection, whereas it did not account for cooperation in those games in which only fear implied defection. Our findings thereby shed light on the underlying motivational mechanisms of the Honesty–Humility–cooperation link and, more generally, demonstrate how economic games can be used to disentangle such mechanisms. Copyright © 2018 European Association of Personality Psychology     

人际同步对合作行为的促进机制及解释模型

同步作为集体仪式的核心要素, 对群体生存和发展具有重要意义。人际同步是一种特殊的协调行为, 具有锁时锁相的特征。近年来研究发现同步能够促进合作等亲社会行为, 具体的促进机制包括神经生理的激活、社会联结感的增强、认知灵敏度的提高和积极情绪的唤起, 学者们也从不同角度提出了三种不同的解释模型：自我-他人重叠模型、合作加强模型和集体沸腾模型。未来的研究需要进一步剖析同步行为的亲社会功能, 厘清同步效应的调节机制、特异性和普适性。     

博弈中的反社会惩罚

博弈中的反社会惩罚是指博弈者对表现出亲社会行为的高贡献或高合作性他人实施有代价经济惩罚、消极评价或排斥打压的现象。已有研究用带惩罚的经典博弈范式证明了反社会惩罚受到多种个体与环境因素的影响, 并分别从侵犯、报复、社会比较、偏离群体规范、进化策略视角提出了解释其产生机制的5种假说。未来研究可在进一步厘清概念与测量指标、创新研究方法、拓展影响因素研究、明确产生机制、开展针对性干预研究方面做深入探索。     

Menstrual cycle-related changes of functional cerebral asymmetries in fine motor coordination

Fluctuating sex hormone levels during the menstrual cycle have been shown to affect functional cerebral asymmetries in cognitive domains. These effects seem to result from the neuromodulatory properties of sex hormones and their metabolites on interhemispheric processing. The present study was carried out to investigate whether functional cerebral asymmetries in fine motor coordination as reflected by manual asymmetries are also susceptible to natural sex hormonal variations during the menstrual cycle. Sixteen right-handed women with a regular menstrual cycle performed a finger tapping paradigm consisting of two conditions (simple, sequential) during the low hormone menstrual phase and the high estrogen and progesterone luteal phase. To validate the luteal phase, saliva levels of free progesterone (P) were analysed using chemiluminescence assays. As expected, normally cycling women showed a substantial decrease in manual asymmetries in a more demanding sequential tapping condition involving four fingers compared with simple (repetitive) finger tapping. This reduction in the degree of dominant (right) hand manual asymmetries was evident during the luteal phase. During the menstrual phase, however, manual asymmetries were even reversed in direction, indicating a slight advantage in favour of the non-dominant (left) hand. These findings suggest that functional cerebral asymmetries in fine motor coordination are affected by sex hormonal changes during the menstrual cycle, probably via hormonal modulations of interhemispheric interaction.     

The Temporal Dynamics of Cooperation

Parties in real-world conflicts often attempt to punish each other's behavior. If this strategy fails to produce mutual cooperation, they may increase punishment magnitude. The present experiment investigated whether delay-reduction - potentially less harmful than magnitude increase - would generate mutual cooperation as interactions are repeated. Participants played a prisoner's dilemma game against a computer that played a tit-for-tat strategy, cooperating after a participant cooperated, defecting after a participant defected. For half of the participants, the delay between their choice and the computer's next choice was long relative to the delay between the computer's choice and their next choice. For the other half, long and short delays were reversed. The tit-for-tat contingency reinforces the other player's cooperation (by cooperating) and punishes the other player's defection (by defecting). Both rewards and punishers are discounted by delay. Consistent with delay discounting, participants cooperated more when the delay between their choice and the computer's cooperation (reward) or defection (punishment) was relatively short. These results suggest that, in real-world tit-for-tat conflicts, decreasing delay of reciprocation or retaliation may foster mutual cooperation as effectively as (or more effectively than) the more usual tactic of increasing magnitude of reciprocation or retaliation.     

The Attribution of Positive and Negative Qualities to Social Actions

This research reports on the manner in which extrinsic qualities are attributed to different forms of social action. Particular concern was given to the question of how such attribution of properties might be related to a person's desire to be involved in the action. Two findings seemed to be relatively clear. First, quite arbitrary qualities are attributed to various social actions with a high degree of consistency. Because these qualities cannot be considered intrinsic to the action, the consistent attribution of such qualities must come from some source other than the actions themselves. Second, of the several qualities examined, the most powerful attributed quality for purposes of social motivation appeared to be the general concept of display. Actions perceived as having a high degree of display potential for an actor were also actions that respondents were willing to commit themselves to or become involved in to a profound degree.