Knives as aggression-eliciting stimuli.
D000374:Aggression; D000704:Analysis of Variance; D003463:Cues; D005260:Female; D005639:Frustration; D006791:Hostility; D006801:Humans; D008297:Male; D012737:Sex Factors; D012938:Social Perception; D013315:Stress, Psychological