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.     

Why do people play violent video games? Demographic,status-related,and mating-related correlates in men and women

The numerous negative and positive consequences of playing violent video games are well-documented. Specifically, violent games improve many aspects of cognition and attention but can also increase aggression. Compared to these established effects of exposure to violent video games, very little is known about who plays violent video games and why they play them. Taking an evolutionary psychological approach to address this gap, in two studies we surveyed 1000 men and women who reported playing video games in the past 30 days. We assessed three classes of predictors of violent video game exposure: demographic, status-related, and mating-related. In both studies, women who played the most violent video games reported feeling a greater sense of mate value than women who played fewer violent video games. Women also reported being motivated to play violent video games because doing so enhanced their sense of attractiveness to romantic partners. In both studies, men reported playing more violent video games than women as did both men and women who reported higher sexual interest. These findings highlight the counterintuitive and complex motivations underlying violent video game exposure. We discuss the need for more research on who plays violent video games and why they play them.     

Correlates and consequences of exposure to video game violence: hostile personality, empathy, and aggressive behavior

Research has shown that exposure to violent video games causes increases in aggression, but the mechanisms of this effect have remained elusive. Also, potential differences in short-term and long-term exposure are not well understood. An initial correlational study shows that video game violence exposure (VVE) is positively correlated with self-reports of aggressive behavior and that this relation is robust to controlling for multiple aspects of personality. A lab experiment showed that individuals low in VVE behave more aggressively after playing a violent video game than after a nonviolent game but that those high in VVE display relatively high levels of aggression regardless of game content. Mediational analyses show that trait hostility, empathy, and hostile perceptions partially account for the VVE effect on aggression. These findings suggest that repeated exposure to video game violence increases aggressive behavior in part via changes in cognitive and personality factors associated with desensitization.     

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.

     

暴力游戏中射杀动作和血腥成分对玩家和观看者攻击倾向的影响

通过实验考察游戏中的射杀动作成分和血腥成分对玩家和观看者攻击性行为和攻击性认知的影响。被试为72名男性大学生, 选用第三人称45度角的射击类游戏, 将游戏中的射杀动作成分和血腥成分进行分离, 采用竞争反应时任务范式考察攻击性行为, 采用EAST内隐认知范式考察内隐攻击性认知, 结果表明: (1) 玩家比观看者表现出更强的攻击性, 玩家表现出的攻击性行为和攻击性认知均显著强于观看者; (2) 视频游戏中的射杀动作成分导致观看者有更高的游戏卷入, 血腥成分对被试的攻击性影响强于射杀动作成分, 并使被试倾向于将攻击性进行他人归因。     

Violent Video Games Stress People Out and Make Them More Aggressive

It is well known that violent video games increase aggression, and that stress increases aggression. Many violent video games can be stressful because enemies are trying to kill players. The present study investigates whether violent games increase aggression by inducing stress in players. Stress was measured using cardiac coherence, defined as the synchronization of the rhythm of breathing to the rhythm of the heart. We predicted that cardiac coherence would mediate the link between exposure to violent video games and subsequent aggression. Specifically, we predicted that playing a violent video game would decrease cardiac coherence, and that cardiac coherence, in turn, would correlate negatively with aggression. Participants (N = 77) played a violent or nonviolent video game for 20 min. Cardiac coherence was measured before and during game play. After game play, participants had the opportunity to blast a confederate with loud noise through headphones during a reaction time task. The intensity and duration of noise blasts given to the confederate was used to measure aggression. As expected, violent video game players had lower cardiac coherence levels and higher aggression levels than did nonviolent game players. Cardiac coherence, in turn, was negatively related to aggression. This research offers another possible reason why violent games can increase aggression—by inducing stress. Cardiac coherence can be a useful tool to measure stress induced by violent video games. Cardiac coherence has several desirable methodological features as well: it is noninvasive, stable against environmental disturbances, relatively inexpensive, not subject to demand characteristics, and easy to use. Aggr. Behav. 39:64‐70, 2013. © 2012 Wiley Periodicals, Inc.     

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.     

暴力视频游戏中不同攻击动机对玩家攻击性的影响

分别采用词汇按键反应任务和EAST范式测查了攻击性认知的流畅性和内隐攻击性评价,旨在考察游戏中攻击动机对攻击性的影响,结果发现：暴力视频游戏的影响效应不仅与暴力内容有关,还受制于攻击动机和玩家的暴力游戏经验;且长期玩暴力游戏会使被试对暴力产生脱敏,表现为攻击性认知的流畅性低,对攻击的评价更积极。本研究表明,暴力视频游戏对个体攻击性的影响需综合考虑多种因素。     

Violent and nonviolent video games differentially affect physical aggression for individuals high vs. low in dispositional anger

Although numerous experiments have shown that exposure to violent video games (VVG) causes increases in aggression, relatively few studies have investigated the extent to which this effect differs as a function of theoretically relevant individual difference factors. This study investigated whether video game content differentially influences aggression as a function of individual differences in trait anger. Participants were randomly assigned to play a violent or nonviolent video game before completing a task in which they could behave aggressively. Results showed that participants high in trait anger were the most aggressive, but only if they first played a VVG. This relationship held while statistically controlling for dimensions other than violent content on which game conditions differed (e.g. frustration, arousal). Implications of these findings for models explaining the effects of video games on behavior are discussed.     

Effects of Violent Versus Nonviolent Video Games on Children's Arousal, Aggressive Mood, and Positive Mood

This study investigated the relationship between violent video games and children's mood. A total of 71 children aged 8 to 12 years played a paper-and-pencil game, a nonviolent video game, and a violent video game. Results indicate that arousal, as measured by heart rate and self-reported arousal, increased significantly after playing the violent video game, as compared with the other two game conditions, with girls reporting more arousal than did boys. There was no significant increase in aggressive mood scores for either boys or girls after playing the violent game. Positive mood, as measured by positive affect, showed no significant increases or decreases after playing either video game. However, positive mood, as measured by general mood, showed a significant increase after playing the violent game for both boys and girls, but only as compared with the paper-and-pencil game. Results are interpreted in terms of social learning and cognitive information processing theories of aggression.     

Causal effects of violent sports video games on aggression: Is it competitiveness or violent content?

Three experiments examined the impact of excessive violence in sport video games on aggression-related variables. Participants played either a nonviolent simulation-based sports video game (baseball or football) or a matched excessively violent sports video game. Participants then completed measures assessing aggressive cognitions (Experiment 1), aggressive affect and attitudes towards violence in sports (Experiment 2), or aggressive behavior (Experiment 3). Playing an excessively violent sports video game increased aggressive affect, aggressive cognition, aggressive behavior, and attitudes towards violence in sports. Because all games were competitive, these findings indicate that violent content uniquely leads to increases in several aggression-related variables, as predicted by the General Aggression Model and related social-cognitive models.     

The effects of violent video games on aggression.

Violent content video games such as Mortal Kombat and Doom have become very popular among children and adolescents, causing great concern for parents, teachers, and policy makers. This study cumulates findings across existing empirical research on the effects of violent video games to estimate overall effect size and discern important trends and moderating variables. Results suggest there is a smaller effect of violent video games on aggression than has been found with television violence on aggression. This effect is positively associated with type of game violence and negatively related to time spent playing the games. Directions for future programmatic research on video games are outlined.     

I wish I were a warrior: the role of wishful identification in the effects of violent video games on aggression in adolescent boys

This study tested the hypothesis that violent video games are especially likely to increase aggression when players identify with violent game characters. Dutch adolescent boys with low education ability (N=112) were randomly assigned to play a realistic or fantasy violent or nonviolent video game. Next, they competed with an ostensible partner on a reaction time task in which the winner could blast the loser with loud noise through headphones (the aggression measure). Participants were told that high noise levels could cause permanent hearing damage. Habitual video game exposure, trait aggressiveness, and sensation seeking were controlled for. As expected, the most aggressive participants were those who played a violent game and wished they were like a violent character in the game. These participants used noise levels loud enough to cause permanent hearing damage to their partners, even though their partners had not provoked them. These results show that identifying with violent video game characters makes players more aggressive. Players were especially likely to identify with violent characters in realistic games and with games they felt immersed in.     

暴力电子游戏的短期脱敏效应：两种接触方式比较

比较主、被动接触暴力电子游戏的脱敏效应,以44名男性大学生为被试,利用生物反馈仪测量被试主动参与游戏或被动观看游戏录像前后,及随后观看暴力视频过程中皮电与心率的变化（脱敏效应的生理指标）。结果表明：（1）暴力电子游戏可以产生脱敏效应。接触游戏15分钟后,暴力游戏组观看暴力视频过程中皮电的增加值明显小于非暴力游戏组;（2）游戏的接触方式对于脱敏效应的程度无显著影响,但主动参与组对于游戏内容知觉到更高的愉快与更低的沮丧     

Violent video games and anger as predictors of aggression

Considerable research has demonstrated that playing violent video games can increase aggression. The theoretical framework upon which a good deal of this research has rested is known as the General Aggression Model (GAM; [Anderson, C. A., & Bushman, B. J. (2002). Human aggression. Annual Review of Psychology, 53, 27–51]). The current study tested an assumption of the GAM by examining if the dispositional trait of anger moderated the relation between violent video games and aggression. A total of 167 undergraduate students (79 females, 88 males) first completed a measure of anger and were then randomly assigned to play either a non-violent or violent video game. After the video game play period, participants completed ambiguous story stems in order to assess aggression. Consistent with predictions of the GAM, anger significantly moderated the effect of video game violence on aggression. Specifically, participants who were angry were more affected by violent video games than participants who were not angry.     

Effect of playing violent video games cooperatively or competitively on subsequent cooperative behavior

Research on video games has yielded consistent findings that violent video games increase aggression and decrease prosocial behavior. However, these studies typically examined single-player games. Of interest is the effect of cooperative play in a violent video game on subsequent cooperative or competitive behavior. Participants played Halo II (a first-person shooter game) cooperatively or competitively and then completed a modified prisoner's dilemma task to assess competitive and cooperative behavior. Compared with the competitive play conditions, players in the cooperative condition engaged in more tit-for-tat behaviors-a pattern of behavior that typically precedes cooperative behavior. The social context of game play influenced subsequent behavior more than the content of the game that was played.     

亲社会视频游戏对玩家人性化知觉水平的影响

为了探讨亲社会视频游戏对玩家人性化知觉的影响, 研究以大学生为被试, 通过两个实验, 分别采用自陈报告法和单类别内隐联想测验技术考察了亲社会视频游戏对玩家自我及他人外显及内隐人性化知觉的影响。结果发现:(1)相对于中性游戏, 不论是普遍人性, 还是独特人性, 亲社会视频游戏均可提高玩家对自我及他人外显的人性化知觉水平;(2)相对于中性游戏, 亲社会游戏可显著提高玩家对自我及他人独特人性的内隐知觉水平, 也可提升对自我普遍人性的内隐知觉水平, 但对他人普遍人性的内隐知觉的效应不明确。这些结果表明, 亲社会视频游戏对于提升玩家对自我和他人的人性化知觉水平具有重要作用。     

Media violence and the self: The impact of personalized gaming characters in aggressive video games on aggressive behavior

A recent development in video games is that players can design and personalize their own in-game characters. It was predicted that this innovation could lead to elevations in the intensity of the psychological effects of video games. The present study confirmed this hypothesis, revealing that participants who played an aggressive video game using their own, personalized character exhibited higher levels of aggressive behavior than participants who played an aggressive game with a non-personalized character. The aggressive behavior levels of the own-character players also exceeded those of individuals who played a non-aggressive game, regardless of whether or not they used a personalized character. Process analyses revealed that participants playing a violent video game with a personalized game character experienced more arousal and self-activation than they did when playing with an impersonal, default game character, which in turn increased aggressive responses.     

The appeal of violent video games to lower educated aggressive adolescent boys from two countries.

The objective of this study was to test the effect of individual differences on appeal and use of video games. Participants were 299 adolescent boys from lower and higher secondary schools in the Netherlands and Belgium. In general, boys were most attracted to violent video games. Boys that scored higher in trait aggressiveness and lower in empathy were especially attracted to violent games and spent more time playing video games than did boys lower in trait aggressiveness. Lower educated boys showed more appreciation for both violent and nonviolent games and spent more time playing them than did higher educated boys. The present study showed that aggressive and less empathic boys were most attracted to violent games. The fact that heavy users of violent games show less empathy and higher aggressiveness suggests the possibility of desensitization. Other studies have shown that playing violent games increases aggressiveness and decreases empathy. These results combined suggest the possibility of a violence cycle. Aggressive individuals are attracted to violent games. Playing violent games increases aggressiveness and decreases empathy, which in turn leads to increased appreciation and use of violent games.     

Acting prosocially reduces retaliation: Effects of prosocial video games on aggressive behavior

Past research has provided abundant evidence that exposure to violent video games increases aggression and aggression‐related variables. In contrast, little is known whether and why video game exposure may also decrease aggressive behavior. In fact, two experiments revealed that playing a prosocial (relative to a neutral) video game reduces aggressive behavior. Mediational analyses showed that differences in both aggressive cognition and aggressive affect underlie the effect of type of video game on aggressive behavior. These findings are in line with assumptions of the General Learning Model and point to the importance of the cognitive and affective routes in predicting how aggressive behavior is affected by exposure to video games. Copyright © 2011 John Wiley & Sons, Ltd.