measured aggressive free play in 4- to 6-year-old children
both before and after they watched a violent television
cartoon or played a violent video game. Both the cartoon
and the video game significantly increased aggressive play
relative to baseline measures for both boys and girls, in
apparent contrast to the findings of Cooper and Mackie
(1986). Similarly, Schutte et al. (1988) found that children
(ages 5 to 7 years) who played a karate video game were
more aggressive later than children who played a nonviolent
jungle swing video game, and this effect was similar among
boys and girls