The association of environmental,individual factors,and dopamine pathway gene variation with smoking cessation

This study aimed to examine whether dopamine (DA) pathway gene variation were associated with smoking cessation, and compare the relative importance of infulence factors on smoking cessation. Participants were recruited from 17 villages of Shandong Province, China. Twenty-five single nucleotide polymorphisms in 8 DA pathway genes were genotyped. Weighted gene score of each gene was used to analyze the whole gene effect. Logistic regression was used to calculate odds ratios (OR) of the total gene score for smoking cessation. Dominance analysis was employed to compare the relative importance of individual, heaviness of smoking, psychological and genetic factors on smoking cessation. 415 successful spontaneous smoking quitters served as the cases, and 404 unsuccessful quitters served as the controls. A significant negative association of total DA pathway gene score and smoking cessation was observed (p < 0.001, OR: 0.25, 95% CI 0.16–0.38). Dominance analysis showed that the most important predictor for smoking cessation was heaviness of smoking score (42%), following by individual (40%), genetic (10%) and psychological score (8%). In conclusion, although the DA pathway gene variation was significantly associated with successful smoking cessation, heaviness of smoking and individual factors had bigger effect than genetic factors on smoking cessation.     

红色和蓝色对中国汉族大学生情绪的启动效应

通过3个实验探讨红色和蓝色对中国汉族大学生的情绪意义。实验1采用限制联想法考察红色和蓝色的情绪意义。实验2、实验3采用启动范式, 分别考察在知觉水平和概念水平上红色和蓝色对情绪的启动效应。结果发现：(1)知觉水平：在唤醒度和优势度上, 红色知觉引发了高唤醒、高优势情绪, 蓝色知觉引发了低唤醒、低优势情绪, 这与国外研究基本一致; 但在愉悦度上, 红色知觉既能引发高愉悦情绪, 也能引发低愉悦情绪, 而蓝色知觉只引发了高愉悦情绪, 这体现出本土化特点。(2)概念水平：在唤醒度和愉悦度上, 红色概念引发了高唤醒、高优势情绪, 蓝色概念引发了低唤醒、低优势情绪, 这与知觉水平基本一致; 但在愉悦度上, 红色概念只启动了高愉悦情绪, 而蓝色概念同时启动了高愉悦和低愉悦的情绪, 这与知觉水平不一致。本研究表明：(1)红色和蓝色对中国汉族大学生情绪引发的特点主要表现在愉悦度上; (2)颜色知觉和颜色概念对情绪的引发机制可能具有如下特点：颜色知觉对情绪的三维度具有直接的引发作用; 而颜色概念对情绪唤醒度和优势度的引发是以颜色知觉为中介, 对愉悦度的引发则是以社会文化为原因。本研究探讨了红色和蓝色对中国汉族大学生情绪的作用, 对红色和蓝色在中国社会环境中的应用具有一定的实际价值; 同时, 直接比较并剖析了颜色知觉与概念对情绪的引发特点, 对于揭示二者对情绪引发的内部机制具有一定的理论意义。     

Mutual support in games: Some properties of Berge equilibria

The Berge equilibrium concept formalizes mutual support among players motivated by the altruistic social value orientation in games. We prove some basic results for Berge equilibria and their relations to Nash equilibria, and we provide a straightforward method for finding Berge equilibria in n-player games. We explore some specific examples, and we explain how the Berge equilibrium provides a compelling model of cooperation in social dilemmas. We show that the Berge equilibrium also explains coordination in some common interest games and is partially successful in explaining the payoff dominance phenomenon, and we comment that the theory of team reasoning provides alternative solutions to these problems.     

Social dominance orientation: Cause or ‘mere effect’?: Evidence for SDO as a causal predictor of prejudice and discrimination against ethnic and racial outgroups

The question of whether SDO is a cause or mere effect of intergroup attitudes and behaviors has been the subject of heated debate. Much of the research brought to bear on the question, however, has used cross-sectional data that is not best-suited for making causal inferences. Using data from a panel study that tracked UCLA undergraduates over several years, we find support for the notion that SDO is a cause, rather than ‘mere reflection’ of prejudice and discrimination against outgroups. Specifically, using cross-lagged analyses among White students, we show that SDO measured in 1996 has significant marginal utility for predicting prejudice against a series of ethnic outgroups, as well as self-reported ingroup friendship preference, four years later, controlling for their 1996 levels. Conversely, outgroup affect and ingroup friendship preference measured in 1996 fail to predict SDO levels in 2000 once 1996 SDO levels are taken into account. Implications of these analyses for the debate on the interpretation of SDO as a relatively stable orientation towards group-based hierarchy in society are discussed.     

Bullying as strategic behavior: relations with desired and acquired dominance in the peer group

To examine whether bullying is strategic behavior aimed at obtaining or maintaining social dominance, 1129 9- to 12-year-old Dutch children were classified in terms of their role in bullying and in terms of their use of dominance oriented coercive and prosocial social strategies. Multi-informant measures of participants’ acquired and desired social dominance were also included. Unlike non-bullying children, children contributing to bullying often were bistrategics in that they used both coercive and prosocial strategies and they also were socially dominant. Ringleader bullies also expressed a higher desire to be dominant. Among non-bullying children, those who tended to help victims were relatively socially dominant but victims and outsiders were not. Generally, the data supported the claim that bullying is dominance-oriented strategic behavior, which suggests that intervention strategies are more likely to be successful when they take the functional aspects of bullying behavior into account.     

Behavioral and social cognitive processes in preschool children's social dominance

This longitudinal, naturalistic study addressed behavioral and social cognitive processes implicated in preschool children's social dominance. In the first objective, we examined the degree to which peer aggression, affiliation, and postaggression reconciliation predicted social dominance across a school year. Consistent with predictions, all three predicted dominance early in the year while only affiliation predicted dominance later in the year, suggesting that aggression, affiliation, and reconciliation were used to establish social dominance where affiliation was used to maintain it. In the second, exploratory, objective we tested the relative importance of social dominance and reconciliation (the Machiavellian and Vygotskian intelligence hypotheses, respectively) in predicting theory of mind/false belief. Results indicated that social dominance accounted for significant variance, beyond that related to reconciliation and affiliation, in predicting theory of mind/false belief status. Results are discussed in terms of specific behavioral and social cognitive processes employed in establishing and maintaining social dominance.     

The money attitude of covert and overt narcissists

The money attitude of covert and overt narcissists was studied. Both covert and overt narcissism predicted the power-prestige dimension of money attitude, which were both mediated by the need for social power. Interestingly, the relationship for covert narcissism was also mediated by the fear of negative social evaluation, confirming its socially vulnerable and hypersensitive features. In addition, the anxiety and distrust factors of money attitude were correlated with covert narcissism only. Anxiety was explained by the need for power and avoidance motivation, but no significant mediator was found for distrust. These findings provide evidence to the similarities and differences between the two types of narcissism. They also shed light on narcissists’ money-related behaviors, such as investment strategy and consumer behaviors.     

Age-related changes in visual pseudoneglect

Pseudoneglect is a slight but consistent leftward attentional bias commonly observed in healthy young populations, purportedly explained by right hemispheric dominance. It has been suggested that normal aging might be associated with a decline of the right hemisphere. According to this hypothesis, a few studies have shown that elderly tend to exhibit a rightward attentional bias in line bisection. In the present study, we tested this hypothesis in young and older participants using a perceptual landmark task. Results yield evidence for an age-related shift, from a strong attentional leftward bias in young adults toward a suppressed or even a reversed bias in the elderly. Right hemisphere impairment coupled to a left hemispheric compensation might explain the perceptual shift observed in older adults. However, a decline in corpus callosum function cannot be excluded. Alternatively, these results may be in agreement with the hypothesis of an age-related specific inhibition of return dysfunction, an overt attentional orienting mechanism, and/or a decrease of dopamine.     

Dichotic listening and left-right confusion

The present study examined the relationship between individual differences in dichotic listening (DL) and the susceptibility to left-right confusion (LRC). Thirty-six men and 59 women completed a consonant-vowel DL test, a behavioral LRC task, and an LRC self-rating questionnaire. Significant negative correlations between overall DL accuracy and LRC rates in men (behavioral task) and self-ratings in women, indicated that the more participants struggled with left-right discrimination, the fewer DL syllables they reported correctly. However, there was no relationship between LRC and the typical right ear advantage. Thus, there is a sex- and task-dependent relationship between LRC and overall DL accuracy, but not between LRC and ear asymmetry. It is concluded that (a) atypical ear asymmetries, as in certain clinical populations, cannot be explained by associated deficits in left-right discrimination, and (b) LRC can negatively affect task performance, even when participants do not have to make explicit "left" versus "right" decisions.