Teachman, G., & Orme, M. (1981). Effects of aggressive and prosocial film material on altruistic behavior of children. Psychological Reports, 48 (3), 699-702.

Abstract:  Examined the effects of 3 kinds 2 types (real life vs cartoon) of TV × (aggressive vs neutral vs prosocial) programs on altruistic donating to charity of 120 8-10 yr olds, using both an immediate test and a 1-wk retest. On the immediate test, exposure to aggressive TV programs led to significantly less donating behavior than did exposure to neutral or prosocial programs. A negative relationship was found between the number of hours, averaged across viewing conditions, Ss reported they watched TV per week and the number of tokens they donated. (11 ref) (PsycINFO Database Record (c) 2004 APA, all rights reserved)