We are who we thought we were: Confirming one’s own antagonism levels.

Although many processes might contribute to the self-perpetuating nature of antagonistic personality, we proposed and tested the "antagonism-confirmation" perspective on this phenomenon. This perspective states that antagonistic personality is based in tendencies to confirm (vs. disconfirm) the self's beliefs about its personality. Importantly, this explanation uniquely predicts that antagonism-related personality constructs should relate to strategically adopting behaviors that vary on only their signification of higher or lower antagonism levels (and nothing more). In apparent privacy, nonclinical participants completed a color-gazing task, wherein antagonistic people ostensibly see colors become more (more-intense condition) or less intense (less-intense condition) while gazing at them. Consistent with the antagonism-confirmation perspective, antagonism-related personality constructs related to perceiving colors as turning more intense in the more-intense (vs. less-intense) condition. These effects could not be attributed to demand and occurred among a subsample of participants that indicated providing completely authentic responses. Furthermore, participants higher in antagonism-related personality constructs reported a greater likelihood of possessing antagonistic characteristics and that these characteristics were more beneficial; mediation evidence suggested that these reports were influenced by their confirmatory responding on the color-gazing task. Antagonism-confirmation tendencies might partly account for why antagonistic personality persists; broadly, the findings highlight the critical nature of identity management as a feature of antagonistic personality. (PsycInfo Database Record (c) 2022 APA, all rights reserved).