Perceptions of daily sacrifice motives: Accuracy, bias, outcomes, and moderators

•Romantic partners are somewhat accurate in perceptions of sacrifice motives.•Romantic partners underperceived the mean-level of each other’s sacrifice motives.•Accuracy of approach sacrifice motives depends on relationship length. The current study examined accuracy and bias in perceptions of a partner’s daily approach and avoidance sacrifice motives, associations of bias with daily sacrificer and perceiver relationship quality, and moderators of accuracy (gender, relationship length, daily stress). 94 cohabiting couples completed daily measures of sacrifice (N = 375 days), stress, relationship satisfaction, and closeness. People showed evidence of accuracy for partner sacrifice motives, but accuracy for approach sacrifice depended on relationship length. People underperceived partner sacrifice motives; underperception of approach sacrifice was associated with greater sacrificer closeness, while overperception of approach sacrifice and overperception of avoidance sacrifice was associated with greater perceiver closeness, although these effects were small. Gender and stress did not moderate tracking accuracy or mean-level bias.