This paper critically analyzes two studies with divergent findings on the relationship between violent video games and violent behavior: Cunningham, Engelstätter, and Ward (2016), which used real-world crime statistics and video game sales data, and Gentile, Bender, and Anderson (2017), which examined physiological and cognitive responses in children during gameplay. The paper compares each study's methodology, evaluates the evidential strength of their respective data sets, identifies logical fallacies present in both, and situates the debate within its historical and theoretical context. The analysis concludes that Gentile et al.'s physiological approach carries greater scientific validity, while Cunningham et al.'s real-world design, though ecologically grounded, relies on overly abstract assumptions.
Video games have become a major form of leisure activity played by people of all ages, particularly teenagers. While for some they are harmless pastimes, others consider them a precursor to violent behavior. This has grown into a significant policy issue, especially in the United States, where acts of violence — such as mass shootings — represent a persistent social problem. In real-world settings, some have linked violent behavior to playing violent video games; however, it is equally true that many people play the same violent games without any propensity to harm others.
This controversy is reflected in research findings as well: some studies argue that violent video games cause violent behavior (Gentile, Bender, & Anderson, 2017), while others argue to the contrary (Cunningham, Engelstätter, & Ward, 2016). This paper critically analyzes these two research studies, which present divergent findings on the effect of violent video games on human behavior.
Cunningham et al. (2016) sought to determine the relationship between violent video games and violent behavior by conducting research that relied on real-world data. Using data on sales of games classified as violent, and using crime as a measure of violent behavior, the study attempted to reflect real-world conditions. The research compared video game sales to reported crime statistics drawn from official databases for the same period — 2005 to 2011.
The design and methodology adopted in this research were largely intended to avoid the ecological validity problem inherent in laboratory experiments, which often fail to reflect real-world settings. From a methodological standpoint, however, this approach has clear limitations. There was no way for the researchers to control for the many other factors that affect criminal behavior outside a laboratory environment. Nevertheless, the findings showed that an increase in video game sales did not correspond to an increase in crime; in fact, the analyzed data indicated a decrease in reported crime over the same period.
The research by Gentile et al. (2017) similarly sought to determine the effect of playing violent video games on violent behavior. Specifically, the study investigated the effects of violent video games on two physiological indicators of the fight-or-flight response — cardiovascular changes and cortisol levels — as well as the accessibility of aggressive thoughts among children.
The study utilized an exploratory quantitative research design. Child participants were recruited randomly, and data were collected before and after a 25-minute session of either a violent or a non-violent video game. While this method allowed for greater control over external variables, it eliminated the real-world element entirely. Moreover, the findings are largely short-term in nature and may not accurately represent what occurs over the medium or long term — the timeframe in which behavioral effects are most likely to manifest in real-world settings. The findings showed that violent video games increased cortisol and cardiovascular arousal more than equally exciting non-violent games. Because elevated cortisol may trigger a fight-or-flight response in children, the researchers concluded that violent video games influence violent behavior.
The controversy between violent video games and violent behavior was intensified by high-profile incidents involving children and adolescents, particularly acts of violence that appeared to mirror content from popular violent games — for example, the Sandy Hook School shooting, which observers linked to the Call of Duty game series (Markey, Markey, & French, 2015).
A historical examination of the literature shows that this controversy was largely amplified by the mainstream media, which attributed the growing popularity of violent video games to rising homicide rates. Reviews of the literature trace this narrative as far back as the Columbine massacre of 1999 (American Psychological Association, 2015). The observation that increases in violent video game popularity appeared to coincide with increased homicide rates fueled the debate further.
Theoretical models approach human aggression from a social cognitive perspective, drawing on advances in cognitive psychology and integrating social learning theory, script theory, biological influences, and developmental theories (Anderson, 2003). These models have deepened the controversy by highlighting variables such as duration of exposure, time elapsed after exposure, and intensity of violent content — factors that are conceptualized differently across theories.
"Evaluating data validity across both studies"
"Slippery slope and post hoc errors in both papers"
"Policy relevance of violent video game research"
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