Effects of repeated exposure to sexually violent or nonviolent stimuli on sexual arousal to rape and nonrape depictions

The major purpose of this investigation was to examine the effects of repeated exposure to sexually violent stimuli (SVS) in relatively ‘naturalistic settings’ on sexual arousal to rape and nonrape stimuli. Repeated exposure effects using nonviolent erotica were also examined. Sixty-nine male Ss participated in the study. A preexposure session was conducted in which Ss were exposed to written and pictorial depictions of rape and mutually-consenting intercourse. Based on Ss' penile tumescence to these depictions, they were classified as either Force-oriented, Nonforce-oriented or Unclassifiable. Subsequently, Ss were randomly assigned to sexually violent (SVS), sexually nonviolent (SNVS) or control conditions within each force-orientation group. Those assigned to the SVS condition were then exposed to 10 SVS including feature-length films and written and pictorial depictions over a period of 4 weeks. Ss in the SNVS condition were exposed to 10 similar media presentations depicting sexually nonviolent activities only. Ss in the control condition were not exposed to any stimuli during this 4-week period. Soon after completion of the exposure phase, Ss returned for a postexposure laboratory session in which they were presented with four depictions that were similar in theme to those in the preexposure session. Penile tumescence scores and self-reports of sexual arousal were obtained. Results revealed that, for Force-oriented Ss, those exposed to either SVS or SNVS were less aroused to the rape depictions in the postexposure session than those in the control condition. A similar pattern occurred with the nonrape depictions for these Ss, though it was considerably less pronounced. No evidence of a similar ‘satiation’ pattern was obtained for either Nonforce-oriented or Unclassifiable Ss, with these Ss showing no significant differences among the three exposure conditions. The findings are discussed in the context of cognitions, personality differences, conditioning processes, stimulus parameters and response habituation theories. Social and clinical implications are also discussed.     

A Meta-Analysis Summarizing the Effects of Pornography II Aggression After Exposure

This meta-analytic review examines the effect that exposure to pornography produces on aggressive behavior under laboratory conditions considering a variety of possible moderating conditions (level of sexual arousal, level of prior anger, type of pornography, gender of subject, gender of the target of aggression, and medium used to convey the material). The summary demonstrates a homogeneous set of results showing that pictorial nudity reduces subsequent aggressive behavior, that consumption of material depicting nonviolent sexual activity increases aggressive behavior, and that media depictions of violent sexual activity generates more aggression than those of nonviolent sexual activity. No other moderator variable produced homogeneous findings. The implications of the results for theoretical approaches to understanding the impact of pornography receives discussion, as do the limitations of such findings.     

Pornography and sexual aggression

This paper reviews work on the relation between pornography and sexual aggression, covering experimental research on arousal, attitudes, and laboratory aggression, and some correlational studies. The termpornography is intended to cover the materials used in the relevant research, although not all of these would necessarily be seen as “pornographic.” The main body of the review is divided between “aggressive” and “not specifically aggressive” pornography, with some consideration in the discussion of the nature of supposedly “nonaggressive” pornography. In the case of sexually aggressive pornography, a variety of undesirable effects have been observed. Males show equal sexual arousal to pornographic rape depictions and consenting intercourse depictions under certain “disinhibiting” circumstances, such as anger or depicted victim pleasure, and these disinhibitors can also produce increased laboratory aggression against female targets by males exposed to aggressive pornography. Aggressive and, to some extent, not specifically aggressive pornography have also been found to increase the endorsement of attitude statements that are supportive of sexual aggression. The paper concludes with a discussion of ethical considerations, possible psychological bases of the effects, and the question of censorship. It is concluded that although several types of materials may produce behavioral orientation toward, and/or attitudinal support for, sexual aggression, this is a function of aggression and dominance themes rather than the explicitness of the sexual cues. These themes extend beyond explicit pornography, through extremely violent stimuli that lack explicit sexual elements, to widely consumed “normal” films and reading matter.     

Effects of Playing Violent Computer Games on Emotional Desensitization and Aggressive Behavior1

This study analyzed the effects of playing a violent computer game on emotional desensitization and aggressive behavior. College students (N = 58) were randomly assigned to play a violent game (VG) or a nonviolent game (NVG), and then were exposed to a set of emotional pictures. Participants' physiological responses were recorded, and the Self‐Assessment Manikin scale was used to assess affective valence and arousal while viewing the pictures. Participants were then asked to replay the game, after which aggressive behavior was measured. Participants' violent game habits (VGH) were also measured. We found that VG playing interacted with participants' VGH to influence aggression, and that self‐reported valence mediated this effect by lowering the feelings of pleasure and displeasure toward emotional stimuli.     

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.     

Violent Attitudes and Deferred Academic Aspirations: Deleterious Effects of Exposure to Rap Music

The purpose of this study was to assess the effects of exposure to rap music on the attitudes and perceptions of young African-American males. Subjects u were exposed to violent rap music videos, nonviolent rap music videos, or no music videos (controls). They read two vignettes, involving: (a) a violent act perpetrated against a man and a woman, and (b) a young man who chose to engage in academic pursuits to achieve success, whereas his friend, who was unemployed, "mysteriously" obtained extravagant items (i.e., a nice car, nice clothes). Results indicated, first, that when compared to subjects in the nonviolent exposure and control conditions, subjects in the violent exposure conditions expressed greater acceptance of the use of violence. Second, when compared to subjects in the control condition, subjects in the violent condition 'reported a higher probability that they would engage in violence. Third, when compared to the controls, subjects in the violent exposure condition expressed greater acceptance of the use of violence toward the woman. Finally, when compared to the controls, subjects in the rap video exposure conditions were more' likely to say that they wanted to be like the materialistic young man and were less confident that the other young man would achieve his educational goals. Possible basis for and implications of these findings are discussed.     

Laboratory and questionnaire measures of aggression among female parolees with violent or nonviolent histories

Female parolees were recruited into a laboratory study to determine the relationship between their previous aggression history, questionnaire measures of aggression, and behavioral measures of aggressive responding using a laboratory methodology: the Point Subtraction Aggression Paradigm (PSAP). Subjects were assigned to a violent or nonviolent group based on their criminal history. Subjects participated in sessions in which they were given three response options: (1) nonaggressive responding that earned money, (2) aggressive responding that ostensibly subtracted money from another fictitious person and was defined as aggressive since it resulted in the ostensible delivery of an aversive stimulus (subtraction of money) to another person, and (3) escape responding that protected the subject's earnings from periodic subtractions initiated by the fictitious other person. Results indicated that the violent female parolees emitted significantly more aggressive responses than subjects in the nonviolent group. This study provides additional external validity as well as evidence for convergent and discriminant validity for PSAP laboratory measurement of human aggressive responding and extends these findings to female parolees. Comparisons to previously published data with male parolees showed that gender differences were found among violent but not nonviolent parolees. Aggr. Behav. 26:291–307, 2000. © 2000 Wiley‐Liss, Inc.     

Effects of long-term exposure to violent and sexually degrading depictions of women

In this study we investigated the effects of emotional desensitization to films of violence against women and the effects of sexually degrading explicit and nonexplicit films on beliefs about rape and the sexual objectification of women. Male subjects viewed either two or five R-rated violent "slasher," X-rated nonviolent "pornographic," or R-rated nonviolent teenage-oriented ("teen sex") films. Affective reactions and cognitive perceptions were measured after each exposure. Later, these men and no-exposure control subjects completed a voir dire questionnaire, viewed a reenacted acquaintance or nonacquaintance sexual assault trial, and judged the defendant and alleged rape victim. Subjects in the violent condition became less anxious and depressed and showed declines in negative affective responses. They were also less sympathetic to the victim and less empathetic toward rape victims in general. However, longer film exposure was necessary to affect general empathy. There were no differences in response between the R-rated teen sex film and the X-rated, sexually explicit, nonviolent film, and the no-exposure control conditions on the objectification or the rape trial variables. A model of desensitization to media violence and the carryover to decision making about victims is proposed.     

Pornography and attitudes supporting violence against women: revisiting the relationship in nonexperimental studies

A meta‐analysis was conducted to determine whether nonexperimental studies revealed an association between men's pornography consumption and their attitudes supporting violence against women. The meta‐analysis corrected problems with a previously published meta‐analysis and added more recent findings. In contrast to the earlier meta‐analysis, the current results showed an overall significant positive association between pornography use and attitudes supporting violence against women in nonexperimental studies. In addition, such attitudes were found to correlate significantly higher with the use of sexually violent pornography than with the use of nonviolent pornography, although the latter relationship was also found to be significant. The study resolves what appeared to be a troubling discordance in the literature on pornography and aggressive attitudes by showing that the conclusions from nonexperimental studies in the area are in fact fully consistent with those of their counterpart experimental studies. This finding has important implications for the overall literature on pornography and aggression. Aggr. Behav. 36:14–20, 2010. © 2009 Wiley‐Liss, Inc.     

Men,Muscles, and Machismo: The Relationship Between Television Violence Exposure and Aggression and Hostility in the Presence of Hypermasculinity

This study examined the effects of exposure to television programming that contains both violent actions and macho portrayals of male characters on subsequent self-reports of aggression and hostility. Experimental results showed that those exposed to a violent and hypermasculine television program had a larger increase in reports of aggression and hostility compared to those exposed to a nonviolent, hypermasculine television program. Self-reports of higher levels of hypermasculinity prior to exposure led to larger increases in aggression and hostility after exposure. Predicted interactions between exposure to the stimulus and prior hypermasculinity occurred for many of the aggression/hostility dimensions. The theory of neo-associationism and priming is discussed to explain the patterns of results.     

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.     

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.     

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.     

Television violence and children's aggression: testing the priming, social script, and disinhibition predictions

The effect of television violence on boys' aggression was investigated with consideration of teacher-rated characteristic aggressiveness, timing of frustration, and violence-related cues as moderators. Boys in Grades 2 and 3 (N = 396) watched violent or nonviolent TV in groups of 6, and half the groups were later exposed to a cue associated with the violent TV program. They were frustrated either before or after TV viewing. Aggression was measured by naturalistic observation during a game of floor hockey. Groups containing more characteristically high-aggressive boys showed higher aggression following violent TV plus the cue than following violent TV alone, which in turn produced more aggression than did the nonviolent TV condition. There was evidence that both the violent content and the cue may have suppressed aggression among groups composed primarily of boys low in characteristic aggressiveness. Results were interpreted in terms of current information-processing theories of media effects on aggression.     

Men's likelihood of sexual aggression: the influence of alcohol,sexual arousal,and violent pornography

Previous research findings have indicated that both alcohol intoxication and violent pornography exposure may contribute to increased sexual aggression by men. This study used an experimental paradigm to examine the effects of a moderate alcohol dose, alcohol‐related beliefs, and victim response on men's self‐reported likelihood of committing sexual aggression. A community sample of male social drinkers (N=84) participated in an experiment in which they read an eroticized rape depiction after completing an alcohol administration protocol. The stimulus story varied whether the victim, who initially expressed unwillingness to engage in sexual activity, expressed pleasure or distress in response to the man physically forcing her to perform several explicit sex acts. A path analytic model illustrated that participants' self‐reported likelihood of behaving like the sexual aggressor in the story was directly related to their own sexual arousal. Heightened sexual arousal was reported by participants who had consumed alcohol, those who read the victim‐pleasure story, and those who believed that drinking women are sexually vulnerable. Results suggest that sexual arousal to violent pornography, as influenced by acute alcohol intoxication and other factors, may be an important component of men's perceptions of their own sexual aggression likelihood. Aggr. Behav. 32:581–589, 2006. © 2006 Wiley‐Liss, Inc.     

The pleasure is momentary…the expense damnable?: The influence of pornography on rape and sexual assault

The effects of pornography, whether violent or non-violent, on sexual aggression have been debated for decades. The current review examines evidence about the influence of pornography on sexual aggression in correlational and experimental studies and in real world violent crime data. Evidence for a causal relationship between exposure to pornography and sexual aggression is slim and may, at certain times, have been exaggerated by politicians, pressure groups and some social scientists. Some of the debate has focused on violent pornography, but evidence of any negative effects is inconsistent, and violent pornography is comparatively rare in the real world. Victimization rates for rape in the United States demonstrate an inverse relationship between pornography consumption and rape rates. Data from other nations have suggested similar relationships. Although these data cannot be used to determine that pornography has a cathartic effect on rape behavior, combined with the weak evidence in support of negative causal hypotheses from the scientific literature, it is concluded that it is time to discard the hypothesis that pornography contributes to increased sexual assault behavior.     

Pornography's Impact on Sexual Satisfaction1

Male and female students and nonstudents were exposed to videotapes featuring common, nonviolent pornography or innocuous content. Exposure was in hourly sessions in six consecutive weeks. In the seventh week, subjects participated in an ostensibly unrelated study on societal institutions and personal gratifications. On an especially constructed questionnaire, subjects rated their personal happiness regarding various domains of experience; additionally, they indicated the relative importance of gratifying experiences. Exposure to pornography was without influence on the self-assessment of happiness and satisfaction outside the sexual realm (e.g., satisfaction deriving from professional accomplishments). In contrast, it strongly impacted self-assessment of sexual experience. After consumption of pornography, subjects reported less satisfaction with their intimate partners—specifically, with these partners' affection, physical appearance, sexual curiosity, and sexual performance proper. In addition, subjects assigned increased importance to sex without emotional involvement. These effects were uniform across gender and populations.     

虚拟化身对攻击性的启动效应:游戏暴力性、玩家性别的影响

虚拟化身是个体在虚拟环境中的自我呈现,化身形象是与特定刻板印象相联系的虚拟化身的外在表象。虚拟化身与攻击性的关系已得到证实,但还有一些问题尚需探讨。本研究通过2个实验,采用线索启动的方法,考察了化身形象、游戏暴力性和玩家性别对化身认同和攻击性的影响,以及化身认同和攻击性之间的关系。实验1结果表明:化身形象与游戏暴力性交互影响化身认同和攻击性。在暴力游戏中,化身形象对化身认同和攻击性有显著影响;在非暴力游戏中,化身形象对化身认同的影响边缘显著,但对攻击性无显著影响。对不同化身形象的认同会诱发不同的攻击性,但受游戏暴力性的影响。实验2结果表明:在暴力游戏中,化身形象与玩家性别交互影响化身认同和攻击性。女性在化身认同方面比男性更易受化身形象影响;男性在攻击性方面比女性更易受化身形象影响。对不同化身形象的认同会导致不同的攻击性,但受性别的影响。     

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.     

At the movies with Buss and Durkee: A natural experiment on film violence

Research on the effects of violence depicted in films shown in movie theatres has been neglected, although there are reasons to believe such presentations may be particularly salient for the viewer. In the present study, adult movie-goers attending commercial showings of a violent or non-violent movie responded to a questionnaire consisting of two scales of the Buss-Durkee aggression inventory, either before or after viewing the film. No sex differences in response were observed. The audience attending the violent film had significantly higher aggression scores than the audience attending the nonviolent film, both before and after viewing. Also, those attending the violent film showed a significant increase in aggression scores, while those at the non-violent film did not. The results demonstrate that audiences who attend violent films have an initially higher level of aggressivity which is heightened after exposure to the violent film. Thus, in order to achieve ecological validity in research on film violence, the characteristics of the audience normally exposed to such films must be taken into consideration. The results also provide support for the hypothesis that attendance at a violent film promotes aggressive tendencies.