Document Type


Degree Name

Master of Arts (MA)




Faculty of Science

First Advisor

Lara Kammrath

Advisor Role

Thesis Supervisor


Past research has debated the benefits of having accurate knowledge about a close other’s personality. However, this research has examined personality knowledge solely in terms of trait knowledge. We hypothesize that within close relationships, accuracy about personality profiles—a person’s “if-then” pattern of responses to situations—may often be more useful than accuracy about personality traits. We provide the first studies of if-then accuracy in close relationships, investigating trigger profiles, which describe a person’s unique pattern of reactivity to various potentially aversive interpersonal situations. For our studies, we first developed the Trigger Profile Questionnaire, consisting of 72 descriptions of potentially bothersome interpersonal behaviours. In Study 1 , friend-pairs rated how much each behaviour triggered them personally, and how much they thought it might trigger their friend. Defining accuracy as self-other agreement, findings demonstrated that having accurate knowledge about a friend’s trigger profile was associated with reduced feelings of relationship conflict for the friend, and increased feelings of depth and support for the self. Study 2 expanded this investigation to include behaviour adjustment as a potential moderator of this association. We predicted that accurate if-then knowledge would only be beneficial if participants used this knowledge to reduce engaging in behaviours that trigger the friend. Results from friend-pairs indicated that if-then accuracy was associated with feelings of depth and support in the relationship, as in Study 1. Participants’ if-then accuracy was not, however, associated with the friend's feelings of conflict. Moreover, there was almost no behaviour adjustment reported in the sample. Nevertheless, participants who did report adjusting their behaviour experienced less conflict in the relationship, as did their friends. No interactions between accuracy and adjustment were significant.

Convocation Year


Included in

Psychology Commons