title: Aggressive reactions to frustration in urban Guatemalan children: the effects of sex and social class.
mesh_terms: D000374:Aggression; D002648:Child; D003431:Cross-Cultural Comparison; D005260:Female; D005639:Frustration; D006166:Guatemala; D006801:Humans; D008297:Male; D010379:Peer Group; D011386:Projective Techniques; D012737:Sex Factors; D012923:Social Class; D012963:Sociometric Techniques; D014505:Urban Population