Assaultive behavior personality and personal space

Eysenck's Psychoticism, Extraversion and Neuroticism (PEN) Inventory was used to explore the role of personality variables in augmented personal space required by assaultive offenders. For both violent (n = 20) and nonviolent (n = 20) subjects personal space was greatest from a rear approach. Neither personality scores nor nature of offense alone predicted personal space needs; however personal space was significantly elevated in all directions for assaultive offenders with high scores on the psychoticism scale of the PEN Inventory.     

Androgens and aggressive behavior in primates: A review

This review deals with possible central and peripheral effects of androgens upon primate aggressive behavior. One problem that clouds interpretation of experimental work is that measurements of dominance have often been employed, such as competition tests for food and water. Such measures often do not correlate with those obtained by quantifying aggressive interactions. It should be remembered that very few of the 188 primate species have been studied experimentally and that great behavioral and physiological diversity occurs within the order. Therefore, generalizations about the effects of androgens upon aggressive behavior in primates (including man) should be made with caution. Testosterone has an organizing influence upon the foetal brain of rhesus monkeys and may affect the development of neural mechanisms which govern aggression in males. More data are required on primates, however, since rhesus monkeys show some important differences from rodents as regards the effects of androgen upon sexual differentiation of the hypothalamus. In future, marmosets may provide a suitable model for such studies, because there is evidence that sexual differentiation of brain by androgen occurs postnatally in these monkeys. At puberty, male primates show a variety of behavioral changes and, during adulthood, males of seasonally breeding species may be more aggressive during the mating season, when testosterone levels are maximal. This does not indicate a causative relationship between testosterone and aggressive responses, because castration and androgen treatments have little effect upon aggression in prepubertal or adult males of several primate species. Androgens have pronounced effects on sexual responses in adult male monkeys, but their central effects upon aggression are much less important than among rodents. Elec trical stimulation of hypothalamic pathways has been employed to evoke aggressive behavior in marmosets and rhesus monkeys. In the rhesus, preliminary evidence indicates that such pathways show some sensitivity to androgens. In rodents it is known that these areas are richly supplied with monoaminergic neurons, which play an important role in aggressive behavior. There is little evidence on primates, however, and this remains a crucial topic for future research. Peripheral effects of androgens should also be considered. Many prosimians and New World monkeys use scent-marking behaviors and, in males, androgen-dependent chemical cues may be involved in sexual recognition and territorial behavior. This possibility awaits investigation. Finally, plasma testosterone levels may alter as a function of aggression itself; thus levels decrease if male rhesus monkeys are defeated by conspecifics. This might occur because neural events associated with giving (or receiving) aggression also influence pituitary function and hence alter gonadal testosterone secretion. Theoretically, it is possible that such changes in circulating testosterone might affect aggressive behavior via a feedback action on the brain, but the experimental evidence does not support such a view.     

Level of instigation and model similarity as determinants of aggressive behavior

A study was conducted to replicate and extend a finding by Wheeler and Levine [1967] indicating that a dissimilar model was more effective in inducing the contagion of aggression than a similar model. On the basis of recent findings suggesting the circumstances under which dissimilar others are more influential than similar others, the following predictions were derived: When subjects are highly instigated, dissimilar models can influence subjects to be more aggressive than can similar models; when subjects are under a low degree of instigation similar models will influence subjects to be more aggressive. Subjects presented their point of view on a case study in a three-person group discussion setting. Then subjects heard the second person (instigator) attack their position in a highly abusive or slightly abusive manner (High vs Low Instigation). Next subjects heard a third person, whom they had been led to believe was similar or dissimilar to themselves, attack the instigator (Similar vs Dissimilar Model). Finally subjects had an opportunity to express their feelings to the instigator. The results supported the predictions.     

儿童道德脱离的影响因素及其与社会行为的关系

问卷调查了775名小学四、五、六年级儿童的移情和道德认同对于道德脱离的影响及道德脱离对其社会行为的作用。结果表明,儿童的移情和道德认同均对儿童的道德脱离有显著的负向影响;儿童的道德脱离对于攻击性行为具有显著的正向关系,与亲社会行为则是显著的负向关系。     

同伴冲突解决的干预训练对小学儿童合作的影响

本研究通过对小学儿童进行为期六周的冲突解决六步法干预训练,探讨培养合作的有效手段和途径.结果表明,实验班被试与控制班被试相比,他们在假想情境中的冲突解决策略水平有了显著提高;问卷调查和对教师的访谈显示,实验班被试能将解决冲突的高水平策略迁移到现实生活中.事实证明,同伴冲突解决六步法能提高小学儿童解决假想情境和实际生活中同伴冲突的策略水平;“六步法”的干预训练是培养儿童合作的行之有效的干预方法.     

多巴胺系统多基因与青少年攻击行为的U型关系：母亲消极教养的调节作用

多巴胺活性与攻击相关的脑功能活动呈倒U型关系。本研究对1044名汉族青少年(初次测评时M age=13.32±0.49岁,50.2%女生)的攻击行为进行间隔一年的两次测评,采用多基因累积分范式考察多巴胺系统的多基因功能积分与青少年攻击行为间的关系以及母亲消极教养的调节作用。结果发现,多巴胺系统多基因累积分二次项与母亲消极教养交互影响两个时间点的青少年攻击行为：在较高母亲消极教养条件下,携带较多或较少低多巴胺活性相关等位基因的青少年表现出高水平的攻击行为,呈U型关系;在较低母亲消极教养条件下,多基因累积分二次项与青少年的攻击行为关系不显著。本研究为多巴胺系统基因的联合效应与母亲消极教养调节青少年攻击行为的基因作用机制提供证据。     

The effect of justified video game violence on aggressive behavior and moderated immersion: An experimental approach

The effect of violent video games on aggressive behavior is an important topic in the field of game research. Recently, growing evidence suggests that justified game violence decreases feelings of guilt caused by in-game immoral behavior. However, little is known about the impact on aggressive behavior, and whether other factors moderate this effect. In a two-factor experiment, we tested the impact of justification of video game violence on aggressive behavior, and whether this effect would be enhanced by game immersion. Pilot experiment 1 (N = 60) and pilot experiment 2 (N = 40) demonstrated that the justification of violence and game immersion was successfully controlled by avatar and graphics quality. In the Main experiment, 123 participants played one of four conditions of a video game (2 [justification: justified vs. unjustified violence] × 2 [immersion: high vs. low immersion]) and it was found that participants who played in the justified violence condition reported greater aggressive behavior than those in the unjustified violence condition. In addition, participants who played in high immersion reported greater aggressive behavior than those in low immersion. However, game immersion did not moderate the effects of justified violence. This unexpected effect is likely due to participants' distancing themselves from and identifying less with their violent avatars.     

饥饿对认知与社会行为的影响及其机制

从心理学视角综述了饥饿对个体认知与社会行为的广泛影响。饥饿会损害一般认知功能, 潜在导致决策与认知偏差, 并引发道德判断标准降低、社会态度改变以及攻击行为增加等现象。在以往研究的基础上, 总结出饥饿影响认知与社会行为内在机制的三种假说：自我损耗说、认知激活说以及协调机制说。最后, 指出当前研究存在着饥饿主观感受差异、测量方法不够准确等问题, 未来研究需要提高饥饿的测量效度, 从生理、心理、社会等多个层面对饥饿影响的机制进行深入探讨。     

小学生与大学生口算时间和广度的比较研究

本研究的目的是比较小学生与大学生在口算时间和广度上的差异。30名大学生和30名6年级小学生接受了口算实验。结果显示：（1）大学生口算的广度明显大于小学六年级学生的口算广度。数字广度也大于小学生,但两者差异不显著;（2）在减法和除法的口算时间上,大学生明显短于小学六年级学生,但在乘法口算上无显著差异。