Lagerspetz, K. M. J., & Engblom, P. (1979). Immediate reactions to TV-violence by Finnish pre-school children of different personality types. Scandinavian Journal of Psychology, 20 (1), 43-53.

Abstract:  61 4-7 yr old children were filmed while watching violent films, and their facial expressions were rated from the videotape. After having seen the violent films and after a control film they were filmed while playing in groups of 3. Ss represented 4 personality types as measured by a scale used by L. Pitkänen (1973): aggressive, constructive, submissive, and anxious. While viewing, aggressive Ss looked less concentrated than the others, and constructive Ss showed the most tenseness and fear. In the play behavior, personality accounted for more differences than did the type of film seen. The submissives and constructives showed an increase in aggressive play after the violent film. Facial expressions while viewing predicted later behavior only to a small extent. There were no differences between the sexes in the total scores, but within the sexes there were differences between the personality types. (35 ref) (PsycINFO Database Record (c) 2004 APA, all rights reserved)