Predictors of Hypersexual Behavior Among College Men and Women: Exploring Self‐Conscious Emotions

The authors examined self‐conscious emotions as predictors of hypersexual behavior among 235 college students. Among men, shame‐proneness and externalization predicted higher hypersexual behavior, whereas guilt‐proneness and detachment were associated with lower hypersexual behavior. Detachment predicted higher hypersexual behavior among women.     

眼动技术在个体认知能力差异研究中的应用

本文从可能性和可行性两方面介绍和论述了眼动技术在个体认知能力差异研究中的应用。在可能性方面,个体眼动特征具有的良好的重测信度和内部一致性信度;在可行性方面,已有研究利用注视和眼跳相关指标、眼动轨迹和瞳孔直径这三类指标对该问题进行探索,结果均发现这些眼动特征与认知能力之间存在着密切关系。今后研究应继续深入探索两者关系的内在认知和神经机制,并尝试结合人工智能算法开发高信效度的眼动认知测验。     

Trial distinctiveness in visuospatial working memory: effects on individual differences

ABSTRACT

Previous research has shown that proactive interference (PI) negatively affects performance on working memory (WM) tasks, particularly when to-be-remembered items are similar across trials, and that individuals with low WM spans are more susceptible to PI than those with high spans. The two experiments of the present study further explored individual differences in susceptibility to PI in the visuospatial domain. The similarity of the to-be-remembered locations was manipulated across trials by varying whether locations were presented in different colours and/or accompanied by unique sounds. It was hypothesised that these manipulations would reduce PI, improving participants’ memory. In addition, because of their increased susceptibility to PI, it also was hypothesised that low spans would benefit more than high spans from increases in distinctiveness. The results of both experiments were consistent with these hypotheses, suggesting that even low-span individuals can overcome the effects of PI, given the right task support.     

Mental-rotation performance in middle and high-school age: influence of stimulus material,gender stereotype beliefs,and perceived ability of gendered activities

ABSTRACT

In psychometric mental-rotation tests, males mostly outperform females. The stimulus material and stereotype beliefs could partly be responsible for these differences. This was investigated in an experimental study administering traditional cube figures (C-MRT) and structurally similar pellet figures (P-MRT) to middle- and high-school aged children. 168 participants either solved the C-MRT or the P-MRT and filled out a questionnaire about their perceived ability of stereotypically masculine and feminine activities and about their gender stereotype beliefs. Overall, boys outperformed girls and all children who solved the C-MRT were better than those who solved the P-MRT. Only boys' mental-rotation performance increased with age while girls' perceived ability of stereotypically masculine activities decreased. A regression analysis identified children’s gender, their perceived ability of stereotypically masculine activities and their female gender stereotype beliefs as predictors of mental-rotation performance. Results are discussed with a focus on stereotype threat effects and gender differences in mental-rotation strategies.     

Individual differences in visuospatial working memory: benefits from environmental support for rehearsal

ABSTRACT

Previous research has suggested that participants with low working memory spans are less likely than those with high spans to engage in rehearsal and other effective strategies during memory tasks. However, most of this research has been conducted in the verbal domain, and less is known about strategy differences in visuospatial working memory. Therefore, the present experiments investigated potential individual differences in the benefit participants receive from environmental support for visuospatial rehearsal. In Experiment 1, memory spans were significantly larger when support was present (i.e. when the array of possible locations remained on the screen) during long inter-item intervals, but importantly, the observed benefit was larger for high-span participants than low-span participants, suggesting that high spans were more likely to use support to facilitate their rehearsal. Other research has suggested that low spans may benefit more than high spans from rehearsal instructions, and so in Experiment 2, participants also were provided with such instructions. However, the rehearsal instructions did not improve memory spans significantly in either group, suggesting that low spans are not only naturally less strategic than high spans, but they may be less capable of taking advantage of effective rehearsal strategies, even when environmental support is present.     

The Ape That Thought It Was a Peacock: Does Evolutionary Psychology Exaggerate Human Sex Differences?

This article looks at the evolution of sex differences in sexuality in human beings and asks whether evolutionary psychology sometimes exaggerates these differences. According to a common understanding of sexual selection theory, females in most species invest more than males in their offspring, and as a result, males compete for as many mates as possible, whereas females choose from among the competing males. The males-compete/females-choose (MCFC) model applies to many species but is misleading when applied to human beings. This is because males in our species commonly contribute to the rearing of the young, which reduces the sex difference in parental investment. Consequently, sex differences in our species are relatively modest. Rather than males competing and females choosing, humans have a system of mutual courtship: Both sexes are choosy about long-term mates, and both sexes compete for desirable mates. We call this the mutual mate choice (MMC) model. Although much of the evolutionary psychology literature is consistent with the MMC model, the traditional MCFC model exerts a strong influence on the field, distorting the emerging picture of the evolved sexual psychology of Homo sapiens. Specifically, it has led to the exaggeration of the magnitude of human sex differences, an overemphasis on men's short-term mating inclinations, and a relative neglect of male mate choice and female mate competition. We advocate a stronger focus on the MMC model.     

Nightmare frequency is related to a propensity for mirror behaviors

We previously reported that college students who indicated engaging in frequent dream-enacting behaviors also scored high on a new measure of mirror behaviors, which is the propensity to imitate another person’s emotions or actions. Since dream-enacting behaviors are frequently the culmination of nightmares, one explanation for the observed relationship is that individuals who frequently display mirror behaviors are also prone to nightmares. We used the Mirror Behavior Questionnaire (MBQ) and self-reported frequencies of nightmares to assess this possibility.A sample of 480 students, consisting of 188 males (19.2 ± 1.73 years) and 292 females (19.0 ± 1.55 years) enrolled in a first-year university psychology course, participated for course credit. They completed a battery of questionnaires that included the 16-item MBQ, plus an item about nightmare frequency (NMF) in the past 30 days. NMF scores were split to create low, medium, and high NMF groups.MBQ total scores were significantly higher for female than for male subjects, but an interaction revealed that this was true only for Hi-NMF subjects. MBQ Factor 4, Motor Skill Imitation, paralleled this global interaction for females, whereas MBQ Factor 3, Sleepiness/Anger Contagion, was elevated only for Hi-NMF males. Item analyses indicated that Hi- and Med-NMF females scored higher than Lo-NMF females on the 3 items of Factor 4 that reflect voluntary imitation (imitating famous/cartoon voices, being a physically active spectator, and learning new skills by observing), as well as on 2 other items that reflect involuntary imitation (contagious yawning and self-rated empathy). Although Hi- and Lo-NMF males differed most clearly on the sleepiness item of Factor 3, all 3 items on this factor (including anger contagion and contagious yawning) are plausibly associated with perception of and response to social threat.Results provide evidence that among females nightmares are associated with voluntary and involuntary mirror behaviors during wakefulness, while among males nightmares are associated with threat-related mirror behaviors during wakefulness. They thus support the possibility that the association between mirror behaviors and dream-enacting behaviors is due to a common mirror neuron mechanism that underlies mirror behaviors and nightmares and that involves motor, rather than emotional, resonance. These results have implications for understanding the comorbidity of nightmares and other pathological symptoms such as imitative suicidal behaviors, the influence of observational learning on dissociative symptomatology, and the predominance of threat and aggression in the dream enacting behaviors of REM sleep behavior disorder.     

Anxiety associated with money market dealers — sex and cultural differences

This study examines the predictors of two measures of anxiety, viz. free-floating anxiety and somatic anxiety (Crown & Crisp, 1979), in (a) male and female money market dealers, and (b) money market dealers working in organizations of differing national ownership, in the City of London. Previous research suggests that differences in anxiety may be sex-based, and also that takeovers and mergers, particularly by foreign-based organizations, result in particular anxieties. Following interviews, 225 questionnaires were completed by dealers in the City of London. Analysis of questionnaire data indicates that the sources of anxiety are different for the sexes; and that the sources of anxiety are different for dealers working in U.K.-owned and U.S.-owned financial institutions. The implications of the results and suggestions for future research are discussed.     

Violence Exposure and PTSD Among Delinquent Girls

Summary

This study focuses on the unique trauma histories of incarcerated girls. In particular, this study draws upon data obtained from 100 incarcerated adolescent girls, highlighting areas of similarity to and difference from incarcerated boys, including: overall levels of traumatic violence exposure, exposure to unique forms of traumatic violence, psychological symptomatology, and hypothesized trajectories of involvement in serious delinquent activity. In addition, a case example is presented to illustrate our hypotheses about the trajectories of adolescent girls' involvement in serious delinquent behavior, as well as the prominent role of early trauma histories and repeat victimization in these trajectories.     

Patterns of Adolescent Aggression and Victimization: Sex Differences and Correlates

This study identified heterogeneous patterns of peer and dating aggression and victimization among boys and girls and examined their relation to risk and protective correlates. Girls (n = 1648) and boys (n = 1420) in grades 8–10 completed surveys assessing 14 indicators of violence involvement. Latent class analyses indicated a four-class solution, though a test of measurement invariance indicated the nature of the classes differed by sex. Among boys and girls, three classes emerged: Uninvolved (45% of girls, 61% of boys), Peer Aggressor-Victims (23% of girls, 21% of boys), and Cross-Context Aggressor-Victims (CCAV) (12% of girls, 5% of boys). Those in the Peer Aggressor-Victims class were likely to report involvement in peer aggression only; however, girls in this class were likely to be involved only in moderate violence, whereas boys were likely to be involved in moderate and severe violence. Those in the CCAV class were likely to report involvement in all forms of violence except sexual and controlling aggression, which was likely only among boys. Among girls, but not boys, a Verbal Dating Aggressor-Victims class (21% of girls) emerged that was characterized by involvement in occasional verbal dating aggression only. Among boys, but not girls, a Cross-Context Physical Victims class (13% of boys) emerged that was characterized by being only a victim of moderate physical peer and dating violence. Unique and shared risk and protective factors distinguished class membership for girls and boys. Findings suggest the pathways leading to violence may differ by sex and result in different patterns of violence involvement.