Bösche, W. (2012). Application of the signal detection theory to the cognitive processing of aggressive stimuli after playing a violent video game: Response bias or enhanced sensitivity?. In A. M. Columbus (Ed.) , Advances in psychology research (Vol 91) (pp. 135-142). Hauppauge, NY US: Nova Science Publishers.

(from the chapter) Although there are well known effects of violent video games on behavior, research on the underlying cognitive processes is sparse. Behaving more aggressively after just having played a violent game could be either explained as adopting a more liberal criterion for acting aggressively, or by the activation of aggressive concepts and scripts. To disentangle these processes, a signal detection approach is adopted. N=90 participants worked on a lexical decision task containing aggressive and non-aggressive words, and then either played a non-violent, a moderately violent or an extremely violent video game. Thereafter, unforeseen to them, they had to recognize the words previously judged. The results show that moderately and extremely violent games specifically enhanced discriminability for the aggressive words. Changes in response bias were only found for extremely violent games. Therefore, both genuine changes in memory processing and more subtle modifications of response proclivity result from playing violent video games. (PsycINFO Database Record (c) 2012 APA, all rights reserved)