TV Violence Key Facts (page 2)
Since the advent of television, the effect of TV violence on society has been widely studied and vigorously debated. Based on the cumulative evidence of studies conducted over several decades, the scientific and public health communities overwhelmingly conclude that viewing violence poses a harmful risk to children. Critics of the research challenge this conclusion and dispute claims that exposure to TV violence leads to real-life aggression. As we move into the digital era with enhanced images and sound, media violence will undoubtedly continue to be a focus of public concern and scientific research.
Prevalence of Violence on TV
The National Television Violence Study is the largest content analysis undertaken to date. It analyzed programming over three consecutive TV seasons from 1994 to 1997.1 Among the findings:
- Nearly 2 out of 3 TV programs contained some violence,2 averaging about 6 violent acts per hour.3
- Fewer than 5% of these programs featured an anti-violence theme or prosocial message emphasizing alternatives to or consequences of violence.4
- Violence was found to be more prevalent in children's programming (69%) than in other types of programming (57%). In a typical hour of programming, children's shows featured more than twice as many violent incidents (14) than other types of programming (6).5
- The average child who watches 2 hours of cartoons a day may see nearly 10,000 violent incidents each year, of which the researchers estimate that at least 500 pose a high risk for learning and imitating aggression and becoming desensitized to violence.6
- The number of prime-time programs with violence increased over the three years of the study, from 53% to 67% on broadcast television and from 54% to 64% on basic cable. Premium cable networks have the highest percentage of shows with violence, averaging 92% since 1994.7
The UCLA Television Violence Monitoring Report also analyzed three years of programming from 1994 to 1997. This study relied on the qualitative judgments of a team of student monitors and staff researchers, rather than a systematic content analysis, to determine whether individual violent depictions "raised concern" for viewers.8 Among the findings:
- Children's Saturday morning TV shows that feature "sinister combat violence" raised the most serious concerns for these researchers. These are fantasy live-action shows and animated cartoons in which violence is central to the storyline, the villains and superheroes use violence as an acceptable and effective way to get what they want, and the perpetrators are valued for their combat ability. Among the most popular shows for children, the number of troubling shows in this genre decreased from seven to four over the three years of the study.9
- The number of prime time series that raised frequent concerns about violence steadily declined over the three years, from nine such series in 1994–95 to just two in 1996–97.10
- TV specials was the only category that raised new concerns at the end of the three years. In the second year five live-action reality shows featured real or re-created graphic images of animals attacking and sometimes killing people. By the third year, the number of such shows had increased again.11
Scientific Studies of TV Violence Effects
Researchers hypothesize that viewing TV violence can lead to three potentially harmful effects: increased antisocial or aggressive behavior, desensitization to violence (becoming more accepting of violence in real life and less caring about other people's feelings), or increased fear of becoming a victim of violence.12 Many researchers believe that children age 7 and younger are particularly vulnerable to the effects of viewing violence because they tend to perceive fantasy and cartoon violence as realistic.13
Since the 1960s, a body of research literature has been accumulating on the effects of TV violence. Taken together, the studies conclude that TV violence is one of many factors that contribute to aggressive behavior. Following are examples of the various types of research studies that have been conducted:14
Laboratory experiments are conducted in a controlled setting in order to manipulate media exposure and assess the short-term effects. Participants are randomly assigned to view either a violent or nonviolent film clip and their subsequent behavior is observed.
- A series of classic experiments conducted in the 1960s provided the earliest evidence of a link between TV violence and aggression. In these studies, children who were exposed to a TV clip of an actor hitting an infl atable doll were more likely than children who did not see the clip to imitate the action in their play, especially if the aggressive actions in the film clip were rewarded.15
- Other laboratory experiments have indicated that exposure to media violence increases children's tolerance for real-life aggression. For example, when third- and fourth-graders were left in charge of two younger children they could see on a TV monitor, the ones who viewed an aggressive film were much more reluctant than those who had not seen the film to ask an adult for help when the younger children began to fight, even though the fight was becoming progressively aggressive.16
Field experiments are conducted in a more naturalistic setting. As with the laboratory studies, children are shown video clips and their short-term post-viewing behavior is monitored by researchers. Over the past 30 years, numerous field studies have indicated that some children behave more aggressively after viewing violence.
- In one study, researchers showed children episodes of either Batman and Spiderman or Mister Rogers' Neighborhood over several weeks and then observed their behavior for two weeks afterwards. The children who viewed violent cartoons were more likely to interact aggressively with their peers, while those children who watched Mister Rogers' Neighborhood became more cooperative and willing to share toys.17
- In another study, researchers exposed children to an episode of Mighty Morphin Power Rangers and then observed their verbal and physical aggression in the classroom. Compared to children who had not seen the episode, viewers committed seven times as many aggressive acts such as hitting, kicking, shoving, and insulting a peer 18
Cross sectional studies survey a large and representative sample of viewers at one point in time. Since the 1970s, a large number of these studies have concluded that viewing TV violence is related to aggressive behavior and attitudes.19 These studies are correlational and do not prove causality; that is, it is difficult to know whether watching violence on TV is causing the increase in aggression or whether viewers who are already aggressive prefer watching violent content.
- In one study, 2,300 junior and senior high school students were asked to list their four favorite programs, which were analyzed for violent content, and to provide a self-reported checklist of activities that ranged from fi ghting at school to serious delinquency. Researchers found that teens whose favorite programs were violent tended to report a higher incidence in overall aggressive and delinquent behavior.20
- A recent study demonstrated a relationship between children's bullying and their exposure to media violence. Third-, fourth-, and fi fth-graders who were identified by their peers as being the ones who spread rumors, exclude and insult peers, and behave in ways that hurt others, were more likely to view violence than nonaggressive children.21
Longitudinal studies offer the best way to study long-term effects of exposure to violent TV content. These studies survey the same group of individuals at several different times over many years to determine whether viewing violence is related to subsequent aggressive behavior. This method is designed to detect causal relationships and statistically control for environmental, family, and personal characteristics that might otherwise account for aggression.
- One study demonstrated that TV habits of children in the 1960s were a significant predictor of adult aggression, even criminal behavior, regardless of children's initial aggressiveness, IQ, social status, or parenting style. In this study, which spans more than 20 years, boys who preferred and viewed more violent programming at age 8 were more likely to be aggressive as teenagers and have arrests and convictions as adults for interpersonal crimes such as spousal and child abuse, murder, and aggravated assault.22
- Television exposure during adolescence has also been linked to subsequent aggression in young adulthood. A 17-year longitudinal study concluded that teens who watched more than one hour of TV a day were almost four times as likely as other teens to commit aggressive acts in adulthood (22% versus 6%), taking into account prior aggressiveness, psychiatric disorders, family income, parental education, childhood neglect, and neighborhood violence.23
Meta-analyses use a statistical procedure to combine the results from many different studies.
- The largest meta-analysis on TV violence analyzed 217 studies conducted between 1957 and 1990, and found that viewing violence was significantly linked to aggressive and antisocial behavior, especially among the youngest viewers. The overall effect size was .31, meaning that exposure to TV violence was estimated to account for 10% of the variance in antisocial behavior.24
Reprinted with the permission of the Kaiser Family Foundation. © 2008 The Henry J. Kaiser Family Foundation.
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