Aggressive Video Games are Not a Risk Factor for Future Aggression in Youth: A Longitudinal Study
The issue of whether video games with aggressive or violent content (henceforth aggressive video games) contribute to aggressive behavior in youth remains an issue of significant debate. One issue that has been raised is that some studies may inadvertently inflate effect sizes by use of questionable researcher practices and unstandardized assessments of predictors and outcomes, or lack of proper theory-driven controls. In the current article, a large sample of 3034 youth (72.8% male Mage = 11.2) in Singapore were assessed for links between aggressive game play and seven aggression or prosocial outcomes 2 years later. Theoretically relevant controls for prior aggression, poor impulse control, gender and family involvement were used. Effect sizes were compared to six nonsense outcomes specifically chosen to be theoretically unrelated to aggressive game play. The use of nonsense outcomes allows for a comparison of effect sizes between theoretically relevant and irrelevant outcomes, to help assess whether any statistically significant outcomes may be spurious in large datasets. Preregistration was employed to reduce questionable researcher practices. Results indicate that aggressive video games were unrelated to any of the outcomes using the study criteria for significance. It would take 27 h/day of M-rated game play to produce clinically noticeable changes in aggression. Effect sizes for aggression/prosocial outcomes were little different than for nonsense outcomes. Evidence from this study does not support the conclusion that aggressive video games are a predictor of later aggression or reduced prosocial behavior in youth.
KeywordsVideo games Aggression Violence Preregistration
C.J.F. performed the data analyses and co-wrote the draft of the manuscript; C.K.J.W. conceived of the study, was co-PI on the original grant, conducted data collection and statistical analyses, and cowrote the draft of the manuscript. All authors read and approved the final manuscript.
This project is supported by the Ministry of Education, Singapore and Media Development Authority (Project #EPI/06AK).
Data Sharing and Declaration
Data are available from the second author upon reasonable request.
Compliance with Ethical Standards
Conflict of Interest
The authors have no conflicts of interest, real or imagined, to declare.
All procedures described within were approved by local IRB.
Youth and their parents were provided with informed consent about the survey and its basic nature as part of the panel recruitment.
- Almendraia, A. (2014). It’s not the video games that are making you angry, you’re just bad at them. Huffington Post. http://huffingtonpost.healthdogs.com/2014/04/08/violent-video-games_n_5112981.html.
- American Psychological Association. (2015). Resolution on violent video games. https://www.apa.org/about/policy/violent-video-games.aspx.
- Anderson., C., Ihori, N., Bushman, B. J., Rothstein, H. R., Shibuya, A., Swing, E. L., Sakamoto, A., & Saleem, M. (2010). Violent video game effects on aggression, empathy, and prosocial behavior in eastern and western countries: a meta-analytic review. Psychological Bulletin, 136(2), 151–173.Google Scholar
- Australian Government, Attorney General’s Department. (2010). Literature review on the impact of playing violent video games on aggression. Canberra, Australia: Commonwealth of Australia.Google Scholar
- Barlett, C. P., & Gentile, D. A. (2012). Attacking others online: the formation of cyberbullying in late adolescence. Psychology of Popular Media Culture, 1(2), 123.Google Scholar
- Brown v EMA. (2011). http://www.supremecourt.gov/opinions/10pdf/08-1448.pdf.
- Berry, J. W., Worthington, E. L., O’Connor, L. E., Parrott, L., & Wade, N. G. (2005). Forgivingness, vengeful rumination, and affective traits. Journal of Personality, 73(1), 183–226.Google Scholar
- Busching, R., Gentile, D. A., Krahé, B., Möller, I., Khoo, A., Walsh, D. A., & Anderson, C. A. (2013). Testing the reliability and validity of different measures of violent video game use in the United States, Singapore, and Germany. Psychology of Popular Media Culture. https://doi.org/10.1037/ppm0000004.
- Buss, A., & Perry, M. (1992). The aggression questionnaire. Journal of Personality and Social Psychology, 63(3), 452–459.Google Scholar
- Elson, M., Ferguson, C. J., Gregerson, M., Hogg, J. L., Ivory, J., Klisanin, D., Markey, P. M., Nichols, D., Siddiqui, S., & Wilson, J. (2019). Do policy statements on media effects faithfully represent the science? Advances in Methods and Practices in Psychological Science. 2(1), 12–25.Google Scholar
- Etchells, P., & Chambers, C. (2014). Violent video games research: consensus or confusion? The Guardian. http://www.theguardian.com/science/head-quarters/2014/oct/10/violent-video-games-research-consensus-or-confusion.
- Federal Commission on School Safety. (2018). Final report of the Federal Commission on School Safety. Washington, DC: US Department of Education.Google Scholar
- Ferguson, C. J. (2015a). Do angry birds make for angry children? A meta-analysis of video game influences on children’s and adolescents’ aggression, mental health, prosocial behavior, and academic performance. Perspectives on Psychological Science, 10(5), 646–666.Google Scholar
- Ferguson, C. J. (2015b). Pay no attention to that data behind the curtain: on angry birds, happy children, scholarly squabbles, publication bias and why betas rule metas. Perspectives on Psychological Science, 10, 683–691.Google Scholar
- Ferguson, C. J. (2011). Video games and youth violence: a prospective analysis in adolescents. Journal of Youth and Adolescence, 40(4), 377–391.Google Scholar
- Ferguson, C. J., & Beaver, K. M. (2009). Natural born killers: the genetic origins of extreme violence. Aggression and Violent Behavior, 14(5), 286–294.Google Scholar
- Ferguson, C. J., & Colwell, J. (2017). Understanding why scholars hold different views on the influences of video games on public health. Journal of Communication, 67(3), 305–327.Google Scholar
- Furuya-Kanamori, F., & Doi, S. (2016). Angry birds, angry children and angry meta-analysts. Perspectives on Psychological Science, 11(3), 408–414.Google Scholar
- Gelman, A., & Loken, E. (2013). The garden of forking paths: why multiple comparisons can be a problem, even when there is no “fishing expedition” or “p-hacking” and the research hypothesis was posited ahead of time. http://www.stat.columbia.edu/~gelman/research/unpublished/p_hacking.pdf.
- Gentile, D. A., Anderson, C. A., Yukawa, S., Saleem, M., Lim, K. M., Shibuya, A., & Sakamoto, A. (2009). The effects of prosocial video games on prosocial behaviors: international evidence from correlational, longitudinal, and experimental studies. Personality and Social Psychology Bulletin, 35, 752–763.Google Scholar
- Gentile, D., Li, D., Khoo, A., Prot, S., & Anderson, C. (2014). Mediators and moderators of long-term effects of violent video games on aggressive behavior practice, thinking, and action. JAMA Pediatr. 168(5), 450–457, https://doi.org/10.1001/jamapediatrics.2014.63.
- Glezer, H. (1984). Antecedents and correlates of marriage and family attitudes in young Australian men and women. In Proceedings of the XXth international committee on family research seminar conference on social change and family policies (Vol 1, pp. 201–255). Melbourne: Australian Institute of Family Studies.Google Scholar
- Hampton, A. S., Drabick, D. A. G., & Steinberg, L. (2014). Does IQ moderate the relation between psychopathy and juvenile offending? Law and Human Behavior, 38(1), 23–33.Google Scholar
- Ivory, A. H., Ivory, J. D., & Lanier, M. (2017). Video game use as risk exposure, protective incapacitation, or inconsequential activity among university students: comparing approaches in a unique risk environment. Journal of Media Psychology: Theories, Methods, and Applications, 29(1), 42–53. https://doi.org/10.1027/1864-1105/a000210.Google Scholar
- Ivory, J. D., Markey, P. M., Elson, M., Colwell, J., Ferguson, C. J., Griffiths, M. D., & Williams, K. D. (2015). Manufacturing consensus in a diverse field of scholarly opinions: a comment on Bushman, Gollwitzer, and Cruz (2015). Psychology of Popular Media Culture, 4(3), 222–229. https://doi.org/10.1037/ppm0000056.Google Scholar
- Jambroes, T., Jansen, L. M. C., v.d. Ven, P. M., Claassen, T., Glennon, J. C., Vermeiren, R. R. J. M., & Popma, A. (2018). Dimensions of psychopathy in relation to proactive and reactive aggression: does intelligence matter? Personality and Individual Differences, 129, 76–82. https://doi.org/10.1016/j.paid.2018.03.001.Google Scholar
- Liau, A. K., Tan, Chow, D., Tan, T. K., & Konrad, S. (2011). Development and validation of the personal strengths inventory using exploratory and confirmatory factor analyses. Journal of Psychoeducational Assessment, 29(1), 14–26.Google Scholar
- Linder, J. R., Crick, N. R., & Collins, W. A. (2002). Relational aggression and victimization in young adults’ romantic relationships: associations with perceptions of parent, peer, and romantic relationship quality. Social Development, 11(1), 69–86. https://doi.org/10.1111/1467-9507.00187.Google Scholar
- Markey, P. M., Markey, C. N., & French, J. E. (2015). Violent video games and real-world violence: rhetoric versus data. Psychology of Popular Media Culture, 4(4), 277–295.Google Scholar
- McCarthy, R. J., Coley, S. L., Wagner, M. F., Zengel, B., & Basham, A. (2016). Does playing video games with violent content temporarily increase aggressive inclinations? A pre-registered experimental study. Journal of Experimental Social Psychology, 67, 13–19. https://doi.org/10.1016/j.jesp.2015.10.009.Google Scholar
- Morales, J. R. & Crick, N. R. (1998). Self-report measure of aggression and victimization. Unpublished measure.Google Scholar
- Nadel, H., Spellman, M., Alvarez-Canino, T., Lausell-Bryant, L., & Landsberg, G. (1996). The cycle of violence and victimization: a study of the school-based intervention of a multidisciplinary youth violence-prevention program. American Journal of Preventive Medicine, 12(5, Suppl), 109–119.Google Scholar
- Olson, C. K., Kutner, L. A., Warner, D. E., Almerigi, J. B., Baer, L., Nicholi, II, A. M., & Beresin, E. V. (2007). Factors correlated with violent video game use by adolescent boys and girls. Journal of Adolescent Health, 41(1), 77–83. https://doi.org/10.1016/j.jadohealth.2007.01.001.Google Scholar
- Orben, A., & Przybylski, A. (2019a). Screens, teens, and psychological well-being: evidence from three time-use-diary studies. Psychological Science. (in press).Google Scholar
- Orben, A., & Przybylski, A. (2019b). The association between adolescent well-being and digital technology use. Nature: Human Behavior, 3(2), 173–182.Google Scholar
- Prescott, A. T., Sargent, J. D., & Hull, J. G. (2018). Metaanalysis of the relationship between violent video game play and physical aggression over time. Proceedings of the National Academy of Sciences of the United States of America, 115(40), 9882–9888. https://doi.org/10.1073/pnas.1611617114.Google Scholar
- Prot, S., Gentile, D. A., Anderson, C. A., Suzuki, K., Swing, E., Lim, K. M., & Lam, B. P. (2014). Long-term relations among prosocial-media use, empathy, and prosocial behavior. Psychological Science, 25(2), 358–368.Google Scholar
- Quandt, T. (2017). Stepping back to advance: Why IGD needs an intensified debate instead of a consensus: commentary on: chaos and confusion din DSM-5 diagnosis of Internet Gaming Disorder: issues, concerns, and recommendations for clarity in the field (Kuss et al.). Journal of Behavioral Addictions, 6(2), 121–123. https://doi.org/10.1556/2006.6.2017.014.Google Scholar
- Savage, J. (2004). Does viewing violent media really cause criminal violence? A methodological review. Aggression and Violent Behavior, 10, 99–128.Google Scholar
- Savage, J., & Yancey, C. (2008). The effects of media violence exposure on criminal aggression: a meta-analysis. Criminal Justice and Behavior, 35, 1123–1136.Google Scholar
- Shamama-tus-Sabah, S., Gilani, N., & Iftikhar, R. (2012). Ravens Progressive Matrices: psychometric evidence, gender and social class differences in middle childhood. Journal of Behavioural Sciences, 22(3), 120–131.Google Scholar
- Sherry, J. (2007). Violent video games and aggression: why can’t we find links? In R. Preiss, B. Gayle, N. Burrell, M. Allen & J. Bryant (Eds), Mass media effects research: advances through meta-analysis (pp. 231–248). Mahwah, NJ: L. Erlbaum.Google Scholar
- Simmons, J., Nelson, L. & Simonsohn, U. (2012). 21 word solution. https://ssrn.com/abstract=2160588 or https://doi.org/10.2139/ssrn.2160588 or http://spsp.org/sites/default/files/dialogue_26%282%29.pdf.
- Surette, R. (2013). Cause or catalyst: the interaction of real world and media crime models. American Journal of Criminal Justice, 38, 392–409.Google Scholar
- Swedish Media Council. (2011). Våldsamma datorspel och aggression—en översikt av forskningen 2000–2011. http://www.statensmedierad.se/Publikationer/Produkter/Valdsamma-datorspel-och-aggression/. Accessed 14 Jan 2011.