My partner looks, swims, and quacks like a duck: The need for cognitive closure in the interpersonal perception of romantic engagement in close relationships.

Individuals are motivated to have a reassuring vision of their partners' characteristics that are central to the relationship such as romantic engagement. This can be particularly true for individuals with high levels of need for closure (NFC). In order to preserve a comforting and stable view of the relationship, they might be motivated by greater assumed similarity and lesser accuracy in perceiving partners' romantic engagement. Three-hundred-fifteen heterosexual couples filled out a questionnaire with measures of NFC and self- and other-reported romantic engagement (harmonious and obsessive). Results showed that, for both types of romantic engagement, assumed similarity and accuracy effects were positive and significant. Moreover, NFC had a moderating role in the assumed similarity and accuracy effects in harmonious romantic engagement. In particular, high NFC individuals showed greater assumed similarity and lower accuracy compared to low NFC individuals.