Abstract The cross-dimensional and cross-situational consistency of the interpersonal behavior of 82 male adolescents varied as a function of their sex role orientation and class of behavior. The adolescents were observed over a 3-month period in a variety of naturally occurring school activities. Whereas 28 of 91 intercorrelations among the aggressiveness dimensions were statistically significant for masculine-typed subjects, only 9 of 91 were significant for feminine-typed subjects. Considerable cross-dimensional and cross-situational consistency of assertiveness for the entire sample was reflected in (a) 10 of 36 intercorrelations among the assertiveness dimensions achieving statistical significance; (b) a significant positive correlation between assertiveness levels in conflictual and nonconflictual situations; and (c) a significant positive correlation between assertiveness levels in passive-structured and active-structured contexts.