Previous research in assertiveness has often failed to differentiate the behaviors to be subsumed within the construct. The purpose of this study was twofold: (1) to isolate and define the subconstructs of assertiveness as they emerged from the structure of two assertive inventories—the Rathus Assertiveness Schedule and the College Self Expression Scale; (2) to evaluate assertiveness as a communication construct by examining it in the framework of two measures of communicator style—a Communicator Style Measure and a test of Predispositions toward Verbal Behavior. Results revealed that the assertiveness measures related to the expected subconstructs of communicator style. Assertiveness, as evidenced by low anxiety, dominance, contentiousness, and a refusal to be intimidated by others, correlated highly with measures of verbal intensity, talkativeness, and good communicator style.