Relational aggression, gender, and peer acceptance: invariance across culture, stability over time, and concordance among informants.

It has been proposed that overt physical and verbal aggression are more prevalent among boys and that covert aggression in the context of interpersonal relationships is more typical of girls. The purpose of this study was to replicate and extend American research on this topic to Italy. Italian elementary school pupils (n = 314) and their teachers provided nominations for aggression and prosocial behavior on 2 occasions within a single school year. Both peer and teacher nominations were highly stable, though there was very poor concordance between them. Peer nominations for both overt and relational aggression were linked to peer rejection. Contrary to expectations, boys scored higher than girls in both overt and relational aggression. Nevertheless, on the basis of the gender composition of extreme groups, the authors conclude that the distinction between overt and relational aggression is as useful in facilitating research on aggressiveness among girls in Italy as it is in the United States.