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Abstract:  Investigated effects of “The Mighty Morphin Power Rangers,” currently the most popular and violent child TV program, on children’s aggressive behavior. 26 boys and 26 girls (aged 5-11 yrs) were shown the Power Rangers or assigned to a control group. The number of aggressive acts by each child was recorded in a 2-min interval. Ss who watched Power Rangers committed more aggressive acts per interval than did controls. For every aggressive act by control Ss, there were 7 by Power Rangers Ss. Boys committed more aggressive acts than girls. (PsycINFO Database Record (c) 2004 APA, all rights reserved)