暴力动画片对5~6岁幼儿攻击性认知的启动效应

基于一般攻击模型理论,本研究考察了暴力动画对幼儿攻击性认知的启动效应。随机抽取400名5~6岁的幼儿（50%女）参与实验统计,200名幼儿观看暴力动画片,200名幼儿观看非暴力动画片,采用修正后的语义分类任务测量被试的攻击性认知水平并进行多元方差分析。结果发现：（1）相比于非暴力动画片组,观看暴力动画片组的幼儿存在更高的攻击性认知。（2）对于男生而言,观看暴力动画片的幼儿比观看非暴力动画片的幼儿存在更高的攻击性认知,而女生则不存在暴力组和中性动画片的组别差异。（3）对于高攻击性特质而言,观看暴力动画片的幼儿比观看非暴力动画片的幼儿存在更高的攻击性认知,而中等攻击性特质和低攻击性特质不存在显著组别差异。（4）5岁和6岁幼儿在观看暴力动画片后的攻击性认知水平不存在显著组别差异。综合研究结果表明,性别和特质攻击是暴力动画情境下调节5~6岁大班幼儿攻击性认知水平的重要个体变量。     

Violent and nonviolent video games produce opposing effects on aggressive and prosocial outcomes

Experimental studies routinely show that participants who play a violent game are more aggressive immediately following game play than participants who play a nonviolent game. The underlying assumption is that nonviolent games have no effect on aggression, whereas violent games increase it. The current studies demonstrate that, although violent game exposure increases aggression, nonviolent video game exposure decreases aggressive thoughts and feelings (Exp 1) and aggressive behavior (Exp 2). When participants assessed after a delay were compared to those measured immediately following game play, violent game players showed decreased aggressive thoughts, feelings and behavior, whereas nonviolent game players showed increases in these outcomes. Experiment 3 extended these findings by showing that exposure to nonviolent puzzle-solving games with no expressly prosocial content increases prosocial thoughts, relative to both violent game exposure and, on some measures, a no-game control condition. Implications of these findings for models of media effects are discussed.     

Effects of Violent Video Games on Aggressive Behavior: Potential Sex Differences

Evidence of the effects of playing violent video games on subsequent aggression has been mixed. This study examined how playing a violent video game affected levels of aggression displayed in a laboratory. A total of 43 undergraduate students (22 men and 21 women) were randomly assigned to play either a violent (Mortal Kombat) or nonviolent (PGA Tournament Golf) video game for 10 min. Then they competed with a confederate in a reaction time task that allowed for provocation and retaliation. Punishment levels set by participants for their opponents served as the measure of aggression. The results confirmed our hypothesis that playing the violent game would result in more aggression than would playing the nonviolent game. In addition, a Game × Sex interaction showed that this effect was larger for men than for women. Findings are discussed in light of potential differences in aggressive style between men and women.     

The lone gamer: Social exclusion predicts violent video game preferences and fuels aggressive inclinations in adolescent players

Violent video game playing has been linked to a wide range of negative outcomes, especially in adolescents. In the present research, we focused on a potential determinant of adolescents’ willingness to play violent video games: social exclusion. We also tested whether exclusion can predict increased aggressiveness following violent video game playing. In two experiments, we predicted that exclusion could increase adolescents’ preferences for violent video games and interact with violent game playing fostering adolescents’ aggressive inclinations. In Study 1, 121 adolescents (aged 10–18 years) were randomly assigned to a manipulation of social exclusion. Then, they evaluated the violent content of nine different video games (violent, nonviolent, or prosocial) and reported their willingness to play each presented video game. The results showed that excluded participants expressed a greater willingness to play violent games than nonviolent or prosocial games. No such effect was found for included participants. In Study 2, both inclusionary status and video game contents were manipulated. After a manipulation of inclusionary status, 113 adolescents (aged 11–16 years) were randomly assigned to play either a violent or a nonviolent video game. Then, they were given an opportunity to express their aggressive inclinations toward the excluders. Results showed that excluded participants who played a violent game displayed the highest level of aggressive inclinations than participants who were assigned to the other experimental conditions. Overall, these findings suggest that exclusion increases preferences for violent games and that the combination of exclusion and violent game playing fuels aggressive inclinations.

     

The effects of violent video games and shyness on individuals’ aggressive behaviors

The general aggression model (GAM) has suggested that the interaction between person factors (e.g., personality variables) and situation factors (e.g., playing violent video games [VVGs]) can increase individuals’ aggressive behaviors through their cognition (e.g., hostile attributions), affect (e.g., negative affect), and/or arousal. The present study employed a modified competitive reaction time task to test the effects of shyness, violent (vs. nonviolent) gameplay, and shyness on individuals’ positive–negative affect, hostile attributions, and aggressive behaviors. In addition, the present study also employed structural equation modeling (SEM) to test the mediation (by cognition and affect) and moderation (by shyness). Results showed that playing a VVG increased aggressive behaviors, negative affect, and hostile attributions primarily among shy participants. In addition, the results of SEM also revealed that this moderating role was mediated by negative affect and hostile attributions. The present study supported GAM and showed that individuals’ aggressive behaviors are differentially susceptible to VVGs, depending on their level of shyness in a “for bad and for worse” manner.     

日常环境中的暴力暴露对攻击行为的长期影响:一个有调节的中介模型

以850名大学生为被试,探讨日常环境中的暴力暴露与攻击行为的关系,并在此基础上提出一个有调节的中介模型,考察攻击性信念的中介作用和人际信任的调节作用。结果发现:(1)日常环境中的暴力暴露对攻击行为有显著的正向预测作用;(2)攻击性信念在日常环境中的暴力暴露与攻击行为的关系中起部分中介作用;(3)攻击性信念的中介作用会受到人际信任的调节。对于低人际信任个体,攻击性信念起部分中介作用;对于高人际信任个体,攻击性信念的中介效应不显著,日常环境中的暴力暴露对攻击行为只有直接作用。     

Effects of violent movies and trait hostility on hostile feelings and aggressive thoughts

The General Affective Aggression Model [Anderson CA, Deuser WE, DeNeve KM (1995): Personality and Social Psychology Bulletin 21:434–448; Anderson CA, Anderson KB, Deuser WE (1996): Personality and Social Psychology Bulletin 22:366–376] suggests that violent movies may increase aggression by increasing hostile feelings and the accessibility of aggressive thoughts. It also suggests that trait hostility may similarly influence affect and cognition. Experiment 1 explored the effects of viewing violent movie clips on affect and cognition. Participants who viewed a violent movie clip later reported higher levels of state hostility than did those who viewed a nonviolent clip. Experiment 2 added trait hostility to the design as a potentially important individual difference variable. The state hostility results of Experiment 1 were replicated. In addition, the relative accessibility of aggressive thoughts was increased by the violent clip, but only for low irritable participants. Discussion focused on the relevance to aggressive behavior. Aggr. Behav. 23:161–178, 1997. © 1997 Wiley-Liss, Inc.     

Effects of realism on extended violent and nonviolent video game play on aggressive thoughts,feelings, and physiological arousal

Previous research has shown that playing violent video game exposure can increase aggressive thoughts, aggressive feelings, and physiological arousal. This study compared the effects that playing a realistic violent, unrealistic violent, or nonviolent video game for 45 min has on such variables. For the purpose of this study, realism was defined as the probability of seeing an event in real life. Participants (N=74; 39 male, 35 female) played either a realistic violent, unrealistic violent, or nonviolent video game for 45 min. Aggressive thoughts and aggressive feelings were measured four times (every 15 min), whereas arousal was measured continuously. The results showed that, though playing any violent game stimulated aggressive thoughts, playing a more realistic violent game stimulated significantly more aggressive feelings and arousal over the course of play. Aggr. Behav. 35:213–224, 2009. © 2009 Wiley‐Liss, Inc.     

Experimental study of the differential effects of playing versus watching violent video games on children's aggressive behavior

There is great concern about the effects of playing violent video games on aggressive behavior. The present experimental study was aimed at investigating the differential effects of actively playing vs. passively watching the same violent video game on subsequent aggressive behavior. Fifty-seven children aged 10-13 either played a violent video game (active violent condition), watched the same violent video game (passive violent condition), or played a non-violent video game (active non-violent condition). Aggression was measured through peer nominations of real-life aggressive incidents during a free play session at school. After the active participation of actually playing the violent video game, boys behaved more aggressively than did the boys in the passive game condition. For girls, game condition was not related to aggression. These findings indicate that, specifically for boys, playing a violent video game should lead to more aggression than watching television violence.     

暴力媒体接触程度对攻击行为的影响——规范信念和移情的作用

研究引入攻击行为的规范信念和移情两个概念,使用攻击性发展稳定的大学生为被试,探讨暴力媒体对攻击行为的作用机制。采用问卷调查法,使用Anderson等人编写的暴力媒体接触程度问卷、攻击行为规范信念量表（NOBAG）、攻击问卷（AQ）和人际活动指标问卷（IRI）对来自北京、福州和成都三地的680名被试进行实地调查,了解其暴力媒体接触程度、攻击行为规范信念、攻击行为和移情能力间的关系,并在此基础上构建了暴力媒体接触程度、移情、规范信念和攻击行为的结构方程模型。研究结果表明：（1）不同性别的攻击性差异显著,男性更经常使用暴力媒体,具有更高的攻击行为规范信念,且倾向于出现攻击行为;（2）暴力媒体对攻击行为的预测作用显著,且不同媒体形式间存在差异,暴力视频游戏的作用显著强于暴力电视和暴力电影/视频;（3）规范信念可以有效预测攻击行为,在暴力媒体接触程度和攻击行为间、移情和攻击行为间起中介作用。     

Exposure to violent media: the effects of songs with violent lyrics on aggressive thoughts and feelings

Five experiments examined effects of songs with violent lyrics on aggressive thoughts and hostile feelings. Experiments 1, 3, 4 and 5 demonstrated that college students who heard a violent song felt more hostile than those who heard a similar but nonviolent song. Experiments 2-5 demonstrated a similar increase in aggressive thoughts. These effects replicated across songs and song types (e.g., rock, humorous, nonhumorous). Experiments 3-5 also demonstrated that trait hostility was positively related to state hostility but did not moderate the song lyric effects. Discussion centers on the potential role of lyric content on aggression in short-term settings, relation to catharsis and other media violence domains, development of aggressive personality, differences between long-term and short-term effects, and possible mitigating factors.     

暴力电脑游戏对个体攻击性的影响

以75名大学生为被试,采用3×2×2被试间设计,探讨电脑游戏暴力对个体的攻击性行为、攻击性情绪和攻击性认知的影响。结果表明:(1)暴力电脑游戏导致个体的攻击性行为增加。游戏与性别和攻击性特质的两重和三重交互作用不显著;(2)暴力电脑游戏对个体的攻击性情绪无显著影响;(3)暴力电脑游戏启动了攻击性认知。游戏、性别和攻击特质这三个变量在攻击性认知上交互作用显著,对于男性,暴力电脑游戏在高攻击性个体身上比低攻击性个体启动了更多的攻击性认知;对于女性,暴力电脑游戏对高低攻击性个体攻击性认知的启动没有显著差异。     

Violent video games and aggressive behavior in young women

The increasing availability of violent video games and their implication in recent school shootings has raised the volume of public debate on the effects of such games on aggressive behavior and related variables. This article reports an experiment designed to test key hypotheses concerning the short term impact of exposure to violent video games on young women, a population that has received relatively little attention in this research literature. Results were that brief exposure to a violent video game increased aggressive behavior. Mediational analyses suggested that the violent video game effect on aggression was not mediated by instrumental aggressive motivation, but was partially mediated by revenge motivation. Other results suggested that the violent video game effect on aggression might be greater when the game player controls a same‐sex violent game character. Aggr. Behav. 29:423–429, 2003. © 2003 Wiley‐Liss, Inc.     

Laboratory measures of aggressive responding in male parolees with violent and nonviolent histories

Males on parole were recruited into a study to determine the external validity of the ©Point Subtraction Aggression Paradigm, a laboratory procedure for measuring human aggressive responding. Subjects were assigned to either a violent or nonviolent group based on their criminal record and the Brown History of Violence Questionnaire. Subjects participated in six 25-min sessions and completed a series of questionnaires. During the laboratory sessions subjects were given two response options: 1) Pressing button A to accumulate points exchangeable for money, and 2) pressing button B which ostensibly subtracted points from another fictitious person. Responding on button B was defined as aggressive since it resulted in the ostensible delivery of an aversive stimulus to another person. Results indicated that the subjects in the violent group emitted significantly more aggressive responses than subjects in the nonviolent group. The two groups also differed on psychometric measures of aggression. This study provides external validity for this laboratory measurement of human aggressive responding, even among males with very similar backgrounds. © 1996 Wiley-Liss, Inc.     

Distress and aggression during dating conflict: A test of the coercion hypothesis

Research with clinically depressed and maritally discordant couples suggests that women's distressed behaviors function to suppress their partners' subsequent aggressive responses. We applied this coercion hypothesis to a nonclinical sample of dating couples (N = 288). We further examined whether these effects were gender‐specific, and whether distressed and aggressive behaviors differ within physically violent versus nonviolent relationships. Women but not men reported engaging in elevated rates of distress in response to partner aggression during past dating conflicts. However, both women and men expected distressed behavior to suppress partner aggression during future conflicts. Expectations about the functional effects of distressed behavior did not differ for participants with physically violent partners versus nonviolent partners. However, participants in violent relationships reported enacting more distressed behaviors and had greater expectations for partner verbal aggression during future conflicts than did participants in nonviolent relationships. Future research may identify the early onset of dysfunctional interaction patterns in couples and concomitant psychological distress.     

The more you play,the more aggressive you become: A long-term experimental study of cumulative violent video game effects on hostile expectations and aggressive behavior

It is well established that violent video games increase aggression. There is a stronger evidence of short-term violent video game effects than of long-term effects. The present experiment tests the cumulative long-term effects of violent video games on hostile expectations and aggressive behavior over three consecutive days. Participants (N = 70) played violent or nonviolent video games 20 min a day for three consecutive days. After gameplay, participants could blast a confederate with loud unpleasant noise through headphones (the aggression measure). As a potential causal mechanism, we measured hostile expectations. Participants read ambiguous story stems about potential interpersonal conflicts, and listed what they thought the main characters would do or say, think, and feel as the story continued. As expected, aggressive behavior and hostile expectations increased over days for violent game players, but not for nonviolent video game players, and the increase in aggressive behavior was partially due to hostile expectations.     

The Rôle of Clasping Activity in Adaptive Behavior of the Infant Chimpanzee: I. Delayed Response

Forty male and 40 female volunteer college students were divided into two groups. Half were exposed to actual tape recorded verbal reports of violent events, and half to similar reports of nonviolent happenings. Ss who had been angered by insult prior to being exposed to violent tapes displayed significantly more aggression than Ss in an insult, nonviolent condition and Ss in a no-insult, violent condition on a subsequent “extrasensory learning” task supposedly involving shocks for incorrect responses. An unexpected finding was that Ss who had not been insulted administered significantly higher “shocks” after exposure to nonviolent reports than Ss in the no-insult, violent group. No significant sex differences were found. Results were interpreted as failing to support the catharsis hypothesis, and comparisons with the effects of visually witnessed violence were made.     

Effects of violent and nonviolent sexualized media on aggression-related thoughts,feelings, attitudes,and behaviors: A meta-analytic review

Women are often depicted as sex objects rather than as human beings in the media (e.g., magazines, television programs, films, and video games). Theoretically, media depictions of females as sex objects could lead to negative attitudes and even aggressive behavior toward them in the real world. Using the General Aggression Model (Anderson & Bushman, 2002) as a theoretical framework, this meta-analytic review synthesizes the literature on the effects of sexualized media (both violent and nonviolent) on aggression-related thoughts, attitudes, and behaviors. Our sample includes 166 independent studies involving 124,236 participants, which yielded 321 independent effects. Overall, the effects were “small” to “moderate” in size (r = .16 [.14–.18]). Significant correlations were found in experimental, cross-sectional, and longitudinal studies, indicating a triangulation of evidence. Effects were stronger for violent sexualized media (r = .25 [.19–.31]) than for nonviolent sexualized media (r = .15 [.13–.17]), although the effects of nonviolent sexualized media were still significant and nontrivial in size. Moreover, the effects of violent sexualized media on aggression were greater than the effects of violent non-sexualized media on aggression obtained in previous meta-analyses. Effects were similar for male and female participants, for college students and non-students, and for participants of all ages. The effects were also stable over time. Sensitivity analyses found that effects were not unduly influenced by publication bias and/or outliers. In summary, exposure to sexualized media content, especially in combination with violence, has negative effects on women, particularly on what people think about them and how aggressively they treat them.     

Neuromodulation can reduce aggressive behavior elicited by violent video games

Research has shown that exposure to violent media increases aggression. However, the neural underpinnings of violent-media-related aggression are poorly understood. Additionally, few experiments have tested hypotheses concerning how to reduce violent-media-related aggression. In this experiment, we focused on a brain area involved in the regulation of aggressive impulses—the right ventrolateral prefrontal cortex (rVLPFC). We tested the hypothesis that brain polarization through anodal transcranial direct current stimulation (tDCS) over rVLPFC reduces aggression related to violent video games. Participants (N = 79) were randomly assigned to play a violent or a nonviolent video game while receiving anodal or sham stimulation. Afterward, participants aggressed against an ostensible partner using the Taylor aggression paradigm (Taylor Journal of Personality, 35, 297–310, 1967), which measures both unprovoked and provoked aggression. Among those who received sham stimulation, unprovoked aggression was significantly higher for violent-game players than for nonviolent-game players. Among those who received anodal stimulation, unprovoked aggression did not differ for violent- and nonviolent-game players. Thus, anodal stimulation reduced unprovoked aggression in violent-game players. No significant effects were found for provoked aggression, suggesting tit-for-tat responding. This experiment sheds light on one possible neural underpinning of violent-media-related aggression—the rVLPFC, a brain area involved in regulating negative feelings and aggressive impulses.     

Sex differences in aggressive behaviour in various strains of mice

Two nonalbino inbred (C57 BL/6 and C3H/He) and one albino strain (Swiss) of mice were compared for female aggression toward intruders: 1 in period of lactation, 2 in nonlactating state and (3) in nonlactating state but previously rubbed with urine of lactating females; and for male aggression toward familiar or unfamiliar opponents. The results showed that resident females of the C57 and Swiss strain vigorously attack lactating intruders introduced into their cages. This effect was mediated by urinary cues emitted by the latter mice. It was also shown that Swiss residents displayed aggression towards nonlactating females, irrespective of their strain. Groups of C57 residents reacted most aggressively towards Swiss females, less aggressively towards C3H intruders, but did not show any aggression towards their own nonlactating conspecifics. In contrast, none of the C3H resident female groups displayed aggression towards intruding females of any category or strain. The results also showed that the males of the three strains displayed little (Swiss and C3H) or no aggression (C57) towards familiar opponents, whereas they directed increased aggressive responses towards unfamiliar ones. Comparisons among the three strains of mice revealed that Swiss males were the most aggressive in either situation. On the other hand, the finding that C3H males showed aggressive responses suggested that male and female aggression are, in this strain, under separate genetic or hormonal control.