从进化心理学视角看两性冒险行为

进化心理学研究发现, 男性比女性更冒险, 男性冒险行为有社会助长和性别助长效应, 求偶动机与异性高魅力均可助长男性冒险行为。按照进化心理学观点, 冒险行为能表现男性作为潜在配偶的积极特征, 可增加其获得异性配偶的几率。择偶偏好研究也证实, 女性青睐敢于冒险的男性。作者认为, 女性冒险行为与求偶动机的关系主要受社会文化影响, 如中国女性在中意的异性面前更避险, 冒险行为领域中进化和文化的交互作用可能成为未来研究焦点。     

婚恋关系中的相似性匹配及争议

婚恋匹配涉及身体特征、社会人口统计学特征、个性心理等方面,有相似性匹配和互补性匹配两种假说,但相似匹配的证据远多于互补。针对感知相似与实际相似的作用、相似性匹配与婚恋质量的关系、以及相似匹配的优势地位与适宜性等争议,分析了导致相似性匹配争议的原因。未来应致力于深化研究内容以建立婚恋匹配理论模型,实现测评方法的多样化、测量指标和工具的科学化,确保相似性计算和统计分析方法的严谨性,并加强婚恋匹配的本土化和跨文化研究。     

唯识精进的结构与功能――以对主观幸福感的影响为例

以588名高中生为被试,以《精进问卷》、《生活满意度量表》和《积极与消极情感量表》为工具,先考察唯识精进的结构,然后,以精进对主观幸福感的影响为例,考察精进的功能。结果表明：（1）精进是七因素的结构;（2）对于生活满意度和积极情感而言,最有力的正向预测变量是无下和披甲精进;（3）对于消极情感而言,披甲和加行精进有微弱的负向预测作用。本研究突破了唯识心理学乃至佛教心理学偏重思辨研究而忽略实证研究的局限。     

繁衍线索对风险信息加工的影响

进化理论认为风险行为与求偶有关。研究通过比较求偶信息(异性照片或描述异性的词语)、养育后代(孕妇照片)及奖赏信息(金牌照片等)试图进一步探讨繁衍线索对两性知觉和判断风险信息的影响。研究1中, 被试描述理想约会对象后求偶动机得到激发, 相对于描述晴朗天气的控制组, 求偶动机让两性更慢地从高风险信息(如滑雪、冲浪等)转移注意力, 且两性对风险信息的注意转移与社群性向无关。研究2显示, 相对于养育后代和奖赏信息, 求偶信息更为迅速地促使男性对高风险信息做出判断, 但求偶信息让女性比男性更慢地对高风险信息做出判断。研究结果进一步证实了自然选择理论及性选择理论对两性加工风险信息的认知机制具有预测作用。     

Why is violent crime so common in the Americas?

Violent crimes, including murders, rapes, and assaults are substantially higher in the Americas than other regions of the world. This study investigated the role of single parenthood ratios in accounting for this regional variation in violent crime of 39 countries using INTERPOL data. It pitted the prediction of parental investment (calling for a delayed relationship between single parenthood and crime) against a mating aggression hypothesis that predicted a contemporaneous effect. Regression analyses found that current single parenthood ratios were strongly and consistently predictive of violent crimes whereas single parenthood ratios 18 years earlier were not and this conclusion remained following controls for income inequality and the population sex ratio. The results indicate that the regional difference in violent crime is best explained in terms of mating competition rather than reduced parental investment. Aggr. Behav. 32:1–9, 2006. © 2006 Wiley‐Liss, Inc.     

Narcissism, vanity, personality and mating effort

The current study examined the relationship between narcissism and vanity, and the degree these are predicted by the ‘Big Five’ personality traits and mating effort (ME) using a sample of 103 females recruited from a large beauty salon. Narcissism correlated with vanity at 0.72 (P < 0.001), and was associated positively with extraversion (E), ME and the subscales of vanity; narcissism was associated negatively with neuroticism (N) and agreeableness (A). Vanity correlated positively with E, conscientiousness, both subscales of narcissism, and ME, and negatively with N and A. A composite narcissism–vanity score was produced using principal components analysis, and used along with scores from the NEO-FFI-R to predict mating effort. The narcissism–vanity composite, low A and E significantly and independently predicted mating effort (adjusted R² = 0.28, F(9.96) = 7.74, P < 0.001). These results show that mating effort is additionally predicted by narcissism as well as self-reported personality.     

人类“性交往”的进化

性交往是人类繁衍出现差异的进化“引擎”。现代人继承了祖先成功繁衍后代的性交往策略。这些策略涵盖长期守诺的性交往（如婚姻）、短期性交往（如短暂的外遇）、婚姻外的性交往（如不忠）、私通他人配偶（引诱别人的配偶）以及配偶维持（与单一配偶性交往）等。两性在性交往过程中面临不同的适应问题,性交往问题的进化机制存在极大的性别差异。配偶偏好不同、短期性交往的愿望不同以及性嫉妒的诱因不同等都是性交往具有性别差异的表现。很多实证研究都证实了性交往策略的存在,人类性交往研究是进化心理学研究中较为成熟的一个研究领域     

Effects of differing response-force requirements on food-maintained responding in CD-1 mice

The effect of force requirements on response effort was examined using outbred (CD-1) mice trained to press a disk with their snout. Lateral peak forces greater than 2 g were defined as threshold responses (i.e., all measured responses). Different force requirements were used to define criterion responses (a subclass of threshold responses) that exceeded the requirement. The reinforcer was sweetened, condensed milk, and it was delivered upon response termination. All mice were exposed to two ascending series of criterion force requirements (2, 4, 8, 16, and 32 g). Increasing the force requirement decreased criterion response rates, but increased threshold response rates. The time-integral of force (area under the force-time curve for individual responses, which is proportional to energy expenditure for each response) increased with the increase in the force requirement. These results conflict with the hypothesis that higher force requirements have aversive qualities and suggest that increased force requirements are more analogous to intermittent schedules of reinforcement. These data suggest that estimations of effort or energy expenditure should be measured independently of the force requirement. Individual differences in responding were found for the CD-1 outbred stock.     

Cultural variations in pre-emptive effort downplaying

Pre-emptive effort downplaying (PED) occurs when people publicly downplay their effort expenditure on test preparation prior to taking a test for the sake of managing the social evaluation of the self in the face of a challenging performance task. Thirty Asian Americans and 29 European Americans had two opportunities to publicly report their effort expenditure on a practice exercise. They also completed measures of self-evaluations and concern for performance before working on the practice exercise, and the self-evaluation measure again at the completion of the actual test. Only European Americans showed PED. Additionally, concern for performance was positively associated with and mediated cultural variations in PED. The implications of these results are discussed.