When feeling good does not always help you sleep: Cultural moderation of the positive affect–sleep link.

= 119) differ in how positive affect relates to both subjective and actigraphy-derived sleep measures. Among European Americans, higher average positive affect was associated with better subjective sleep quality and a calmer (vs. tense) mood upon awakening. By contrast, these associations were not observed among East Asians; instead, greater positive affect predicted shorter sleep duration for these individuals. Notably, these cultural differences emerged only for high-arousal (not low-arousal) positive affect. Together, these findings suggest that the restorative benefits of positive affect on sleep may be culturally contingent, depending on how positive emotions are viewed in different societies. (PsycInfo Database Record (c) 2026 APA, all rights reserved).