Perceived superiority, the tendency to regard one's own relationship as better than other people's relationships, is a key relationship maintenance mechanism. Little is known about whether and how it changes during the transition to marriage, a pivotal moment in most couples' life cycle. In a longitudinal study following 97 couples for three waves across the transition, men presented stable perceived superiority, whereas women presented a curvilinear change in superiority perceptions, with a substantial increase in perceived superiority between T1 and T2 and a significantly reduced change between T2 and T3. In addition, trajectories differed according to partners' commitment level. More committed and less committed partners both showed a curvilinear change in perceived superiority, though following different patterns. Results point to the functional value of perceived superiority, which emerges as a strategy aimed at sustaining partners through the challenges deriving from the transition to marriage.
Keywords: Perceived superiority; commitment; couple relationship; social comparison; trajectories.