Interpersonal and noninterpersonal interactions, interpersonal motives, and the effect of frustrated motives.

A new circumplex model of interpersonal interaction emphasizes the motives that drive interpersonal behaviors and the negative affect (such as anger) that occurs when a strongly activated motive is frustrated. This study examined the model experimentally by varying conditions designed to activate and frustrate interpersonal motives. One hundred twenty-nine students engaged in text-based discussions using a computer. Three factors were varied: (a) activation of interpersonal motives--participants believed the interaction was interpersonal (with a human) or noninterpersonal (with a computer); (b) individual differences in motive activation--assertive and nonassertive participants were compared (strong vs. weak motive to influence others); and (c) level of frustration of activated motives--the "partner's" messages contained dominating or nondominating language. Participants who believed their interaction was interpersonal produced more interpersonal behaviors of various types. Assertive participants who interacted with a dominating and apparently human partner produced a disproportionate amount of hostility, indicating anger ascribed to frustrated motives.