This study examined the relationship between media violence exposure and Attention-deficit/hyperactivity disorder (ADHD)-related behaviors. Using survey (parent-reported) and genetic data of 1,612 Dutch children (aged 5 to 9years), we examined genetic disposition as a possible cause of individual differences in children's use of and susceptibility to media violence. The gene variant of interest was the 5-HTTLPR polymorphism, which has been associated with ADHD-related behaviors in previous research. Results showed that the "long" variant of the gene polymorphism was related to greater violent media use, which in turn was related to more ADHD-related behaviors. The 5-HTTLPR genotype did not moderate the effect of media violence on ADHD-related behaviors. This study provides insight into the role of genetic factors in media effects.,
Journal of Communication
Erasmus MC: University Medical Center Rotterdam

Nikkelen, S., Vossen, H., Valkenburg, P., Velders, F., Windhorst, D., Jaddoe, V., … Tiemeier, H. (2014). Media Violence and Children's ADHD-Related Behaviors: A Genetic Susceptibility Perspective. Journal of Communication, 64(1), 42–60. doi:10.1111/jcom.12073