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.     

The Influence of Competitive and Cooperative Group Game Play on State Hostility

Most research on violent video game play suggests a positive relationship with aggression‐related outcomes. Expanding this research, the current study examines the impact group size, game motivation, in‐game behavior, and verbal aggression have on postgame play hostility. Consistent with previous research, group size and verbal aggression both displayed a significant positive relationship with hostility. From these results, avenues for future research on anti‐ and prosocial outcomes from group gaming are offered.     

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.     

Appetitive and Defensive Arousal in Violent Video Games: Explaining Individual Differences in Attraction to and Effects of Video Games

Evidence surrounding the attraction to media violence is mixed and the effects of violent video game play on players varies across experimental participants. Differences in both may be explained by differences in experienced positive or negative arousal. This study utilizes the limited capacity model of motivated mediated message processing (LC4MP) and the motivation activation measure (MAM), which measures resting activation of the appetitive and aversive arousal systems, to explore the relationship between attraction to media violence, arousal, and aggression. In part 1, a questionnaire found that men and frequent players of violent games expected to enjoy violent games more than nonviolent games. In addition, participants whose scores on the MAM characterized them as risk takers (high scores on appetitive arousal and low scores on aversive arousal) indicated a stronger preference for violent games compared to the other three arousal types, which is in line with the LC4MP. In the experimental portion of the research, after playing a violent game, those participants characterized as risk avoidant (high on aversive arousal and low on appetitive arousal) were significantly less aggressive than all other arousal groups. Overall, results show that individual differences in the appetitive and aversive arousal systems can explain attraction to violent media. Furthermore, arousal resulting from violent video game play can be experienced as pleasant or aversive, and it is this experience of arousal that explains variations in aggressive responses to violent video games.     

The Effect of Advances in Video Game Technology and Content on Aggressive Cognitions,Hostility, and Heart Rate

Two studies were conducted that tested the moderating role of video game graphics quality in the relationship between video game content and aggression-related variables. In both studies, participants played either a violent or nonviolent video game on one of three video game systems with differing technological computing power (which contributes to the realism depicted in these video games). In Study 2, the moderating and mediating role of immersion was also tested. Results showed that video game violence exposure was related to aggressive cognitions and state of hostility. Video game technology did not moderate this relationship. Finally, immersion, as an individual difference variable, did not moderate or mediate this relationship. This suggests that aggressive cognitions and feelings occur independent of how technologically advanced the graphics are and the extent to which one feels as though they are immersed in a violent video game. Implications and future research are discussed.     

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。     

Short-Term Violent Video Game Play by Adolescents Alters Prefrontal Activity During Cognitive Inhibition

Prior research has indicated an association between exposure to violent media and aggressive thoughts, feelings, and behavior, potentially as a result of effects on inhibitory mechanisms. However, the role of violence in video games in modulating subsequent neural activity related to cognitive inhibition has received little attention. To examine short-term effects of playing a violent video game, 45 adolescents were randomly assigned to play either a violent or a nonviolent video game for 30 minutes immediately prior to functional magnetic resonance imaging (fMRI). During the fMRI procedure, participants performed a go/no-go task that required them to press a button for each target stimulus and withhold the response for non-target stimuli. Participants who played the violent game demonstrated a lower BOLD response in right dorsolateral prefrontal cortex (DLPFC) when responses were appropriately inhibited. The DLPFC is involved with executive functioning, including suppression of unwanted thoughts and behaviors. In addition, responses in the DLPFC demonstrated stronger inverse connectivity with precuneus in the nonviolent game players. These results provide evidence that playing a violent video game can modulate prefrontal activity during cognitive inhibition.     

Violent Video Games Induce an Affect Processing Bias

This study investigated the effects of violent video game play and trait hostility on attentional bias toward negatively valenced words. Following video game play, participants completed an emotional Stroop task. Results indicated greater Stroop interference for participants high in trait hostility and for participants playing violent video games. Implications of these findings are discussed with respect to current models of aggressive behavior.     

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.     

How long do the short‐term violent video game effects last?

How long do the effects of the initial short‐term increase in aggression and physiological arousal last after violent video game play? Study 1 (N=91) had participants complete pre‐ and postvideo game measures of aggressive thoughts, aggressive feelings, and heart rate. Then, participants completed Time 3 measures after 4 min or 9 min of delay. Study 2 employed a similar procedure, but had participants (N=91) complete the hot sauce paradigm to assess aggressive behavior after a 0, 5, or 10 min delay. First, results indicated that aggressive feelings, aggressive thoughts, aggressive behavior, and heart rate initially increased after violent video game play. Second, results of the delay condition revealed that the increase in aggressive feelings and aggressive thoughts lasted less than 4 min, whereas heart rate and aggressive behavior lasted 4–9 min. Aggr. Behav. 35:225–236, 2009. © 2009 Wiley‐Liss, Inc.     

Exposure to violent video games and aggression in German adolescents: a longitudinal analysis

The relationship between exposure to violent electronic games and aggressive cognitions and behavior was examined in a longitudinal study. A total of 295 German adolescents completed the measures of violent video game usage, endorsement of aggressive norms, hostile attribution bias, and physical as well as indirect/relational aggression cross‐sectionally, and a subsample of N=143 was measured again 30 months later. Cross‐sectional results at T1 showed a direct relationship between violent game usage and aggressive norms, and an indirect link to hostile attribution bias through aggressive norms. In combination, exposure to game violence, normative beliefs, and hostile attribution bias predicted physical and indirect/relational aggression. Longitudinal analyses using path analysis showed that violence exposure at T1 predicted physical (but not indirect/relational) aggression 30 months later, whereas aggression at T1 was unrelated to later video game use. Exposure to violent games at T1 influenced physical (but not indirect/relational) aggression at T2 via an increase of aggressive norms and hostile attribution bias. The findings are discussed in relation to social‐cognitive explanations of long‐term effects of media violence on aggression. Aggr. Behav. 35:75–89, 2009. © 2008 Wiley‐Liss, Inc.     

Short- and Long-Term Effects of Video Game Violence on Interpersonal Trust

Two studies investigate the psychological processes underlying short- and long-term effects of video game violence on interpersonal trust. Study 1 demonstrates that interacting with physically aggressive virtual agents decreases players' trust in subsequent interactions. This effect was stronger for players who were dispositionally sensitive to victimization. In Study 2, long-term effects of adolescents' frequent exposure to video game violence on interpersonal trust and victim sensitivity were investigated. Cross-lagged path analyses show that the reported frequency of playing violent video games reduced interpersonal trust over a period of 12 months, particularly among victim-sensitive players. These findings are in line with the sensitivity to mean intentions (SeMI) model, and they suggest that interpersonal mistrust is a relevant long-term outcome of frequent exposure to video game violence.     

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 adolescents: The overlooked influence of development

Recent acts of extreme violence involving teens and associated links to violent video games have led to an increased interest in video game violence. Research suggests that violent video games influence aggressive behavior, aggressive affect, aggressive cognition, and physiological arousal. Anderson and Bushman [Annu. Rev. Psychol. 53 (2002) 27.] have posited a General Aggression Model (GAM) to explain the mechanism behind the link between violent video games and aggressive behavior. However, the influence of violent video games as a function of developmental changes across adolescence has yet to be addressed. The purpose of this review is to integrate the GAM with developmental changes that occur across adolescence.     

Video Game Violence and the Female Game Player: Self‐ and Opponent Gender Effects on Presence and Aggressive Thoughts

Adding depth and breadth to the general aggression model, this paper presents three experiments that test the relationships among user and opponent gender representation, opponent type, presence, and aggressive thoughts from violent video game play. Studies 1 and 2 suggest that females experience greater presence and more aggressive thoughts from game play when a gender match between self and game character exists. Studies 2 and 3 indicate that playing against a human opponent (rather than a computer) increases aggressive thoughts. Finally, although Studies 1, 2, and 3 indicate that playing as a female against a male opponent increases aggressive thoughts, Studies 1 and 2 suggest that playing as a male against a female opponent consistently and significantly decreases aggressive thoughts.     

The effects of reward and punishment in violent video games on aggressive affect, cognition, and behavior

Three experiments examined the effects of rewarding and punishing violent actions in video games on later aggression-related variables. Participants played one of three versions of the same race-car video game: (a) a version in which all violence was rewarded, (b) a version in which all violence was punished, and (c) a nonviolent version. Participants were then measured for aggressive affect (Experiment 1), aggressive cognition (Experiment 2), and aggressive behavior (Experiment 3). Rewarding violent game actions increased hostile emotion, aggressive thinking, and aggressive behavior. Punishing violent actions increased hostile emotion, but did not increase aggressive thinking or aggressive behavior. Results suggest that games that reward violent actions can increase aggressive behavior by increasing aggressive thinking.     

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 computer games and their effects on state hostility and physiological arousal

An experimental study was conducted to investigate the impact of violent computer games on state hostility, state anxiety and arousal. Participants were undergraduate students, aged from 18 to 25 years. Before the experimental sessions, participants filled in self‐report measures concerning their video game habits and were also pre‐tested for aggressiveness and trait anxiety. Physiological responses (heart rate and skin conductance) were measured during the experiment. After playing, information about state hostility and state anxiety was collected. The results showed that participants who played the violent game reported significantly higher state hostility, and support the assumption that an aggressive personality moderates the effect of playing a violent game on state hostility. Aggr. Behav. 32:146–158. 2006 © 2006 Wiley‐Liss, Inc.     

Violent computer games and their effects on state hostility and Physiological arousal

An experimental study was conducted to investigate the impact of violent computer games on state hostility, state anxiety and arousal. Participants were undergraduate students, aged from 18 to 25 years old. Before the experimental sessions, participants filled in self‐report measures concerning their video game habits and were also pre‐tested for aggressiveness and trait anxiety. Physiological responses (heart rate and skin conductance) were measured during the experiment. After playing, information about state hostility and state anxiety was collected. The results showed that participants who played the violent game reported significantly higher state hostility and support the assumption that an aggressive personality moderates the effect of playing a violent game on state hostility. Aggr. Behav. 32:358–371. 2006. © 2006 Wiley‐Liss, Inc.