保护动机对农村流动人口性病艾滋病高危性行为的预测

农村流动人口已经成为我国性病艾滋病预防干预的重点人群。为了探讨流动人口所存在的性病艾滋病高危性行为,以及保护动机（Protection Motivation）对性病艾滋病高危性行为的预测作用,研究选取2201名从农村到北京打工已有3个月的流动人口为被试,采用问卷调查的形式,要求其报自己报告初始性行为发生的时间、性伙伴的数量、商业性行为、性伙伴的性行为、安全套的使用,对我国性病艾滋病严重程度的评估,以及所拥有的性病艾滋病症状知识和传播知识。对904名已发生性行为的流动人口的统计分析发现：（1）农村流动人口存在较多的高危性行为,男性流动人口的高危性行为明显多于女性流动人口;（2）保护动机理论对农村流动人口的性病艾滋病高危性行为具有明显的预测作用,其中的外在奖励、内在奖励、反应效能和反应代价与农村流动人口的性病艾滋病高危性行为的关系更为密切。研究揭示,保护动机理论可以作为我国今后开展农村流动人口性病艾滋病高危性行为预防干预工作的一个基础     

Parallel sexual relationships in the Norwegian context

The purpose of the paper is to describe and analyse the prevalence of parallel sexual relationships among adult Norwegians in terms of social background variables, possibility factors and motivational factors. Data stem from two cross-sectional, postal questionnaire surveys in 1987 and 1992 on two separate representative samples of 10,000 Norwegians aged between 18 and 60. The results showed that 16% of the respondents reported one or more parallel sexual relationships. The prevalence of parallel sexual relationships increased with possibility factors, such as the number of travelling days and population density. Among motivational factors, parallel sexual relationships increased with the number of years married/cohabiting, except for those married the longest. It decreased with increasing age of first intercourse, and increased with the number of partners before the last partnership. Of those not satisfied with coital frequency with their permanent partner, 22% had parallel sexual relationship experience compared to 12% among those who were satisfied. Furthermore, more men than women reported parallel sexual relationships; respondents with higher levels of education more often reported parallel sexual activity than those with lower level of education; and subjects born between 1937 and 1956 reported more parallel sexual activity than the other cohorts. When controlled for the number of years married/cohabiting, the predicted trend suggests that for the cohorts born up to 1970, men and women with lower and higher levels of education have become more similar as regards parallel sexual behaviour. © 1998 John Wiley & Sons, Ltd.     

卵巢激素影响女性恐惧情绪加工的神经机制

大脑结构和功能的性别差异导致恐惧情绪加工的两性差别。女性对恐惧情绪加工受到体内雌激素和孕激素浓度的影响。近年来, 人类脑成像技术、遗传学和分子生物学的综合研究发现了卵巢激素影响女性恐惧情绪加工的神经机制。其中, 雌激素水平升高导致杏仁核活动增强, 使女性对恐惧面孔识别的准确性增加, 而孕激素水平则相反。这与女性在月经周期不同阶段对社会交往的需求和妊娠期间的自我保护机制有关。     

生命史理论：进化视角下的生命发展观

传统的心理学研究很少从发展角度系统地考察童年早期经历和个体生物性发展之间的关系。然而，以进化理论为基础的生命史理论的研究表明，个体的幼年环境会影响一系列生命史事件的出现和持续时间。其要义在于，为了最大限度地成功繁衍，个体会根据环境线索来做出关乎生存和繁衍的具有适应性的权衡。特别地，性成熟时间是生命史理论区别于其他人类发展理论的核心变量。未来的研究一方面需要深入挖掘人类社会规范在生命史权衡中的意义，另一方面还要继续探索实证研究的新方法。     

Social exclusion lowers working memory capacity in gay-men but not in heterosexual-men

Because sexual orientation is a crucial factor in social discrimination, this study assessed how the working memory capacity of gay-men and heterosexual-men is affected by a social exclusion event (N = 88). To manipulate the experience of social exclusion participants were included or excluded from a game of Cyberball. To assess working memory capacity, participants had to recall a series of letters while performing math problems in an automated version of the operation span task. The results of this small study, showed the sexual orientation of participants interacted with variations in belonging such that being ostracized (but not being included) lowered the working memory capacity of gay-men relative to heterosexual-men. Implications for research on belonging, social exclusion, and stereotype threat are discussed.     

Is that a “No”? The Interpretation of Responses to Unwanted Sexual Attention

In this study, we used an interactive perspective to address the issue of responses to sexual harassment. We examined the effect of the consistency across time, consistency across types of advances, and assertiveness of a rejecting response on its perceived effectiveness. Participants were presented with scenarios that described responses to unwanted sexual attention and were required to rate the effectiveness of the responses for their clarity, content, and estimated effect on the future behavior of the perpetrator. The results show significant effects of consistency across time, consistency across types of advances, and assertiveness on perceived effectiveness of the response. As expected, an assertive response that was consistent across time and types of advances was perceived to be the most effective. This effect was found to be stronger for women than for men.     

Confirmation Bias and the Sexual Double Standard

In contemporary Western societies it is widely believed that there is a sexual double standard such that men are rewarded for sexual activity, whereas women are derogated for sexual activity. This pervasive belief may result in a confirmation bias such that people tend to notice information that confirms the double standard and fail to notice information that refutes it. Two studies were conducted to test this hypothesis. In both studies, participants read vignettes about a target man or a woman that contained an equal number of positive and negative comments regarding the target's sexuality. Participants recalled more information consistent with the double standard than inconsistent with it.     

Children of Lesbian and Gay Parents

ABSTRACT— Does parental sexual orientation affect child development, and if so, how? Studies using convenience samples, studies using samples drawn from known populations, and studies based on samples that are representative of larger populations all converge on similar conclusions. More than two decades of research has failed to reveal important differences in the adjustment or development of children or adolescents reared by same-sex couples compared to those reared by other-sex couples. Results of the research suggest that qualities of family relationships are more tightly linked with child outcomes than is parental sexual orientation.     

临床麻醉中知情同意的思考

临床麻醉工作中,尊重患者自主权是知情同意的基础,知情同意反映了患者自主权与医学干涉主义之间的相互妥协。在信任基础上的知情同意,是患者自主权的最佳体现,也是对医学干涉主义的尊重,从而为患者的利益提供服务。