Telling young children an adult’s emotional reactions to their future honest or dishonest behavior causes them to cheat less.

The current research examined whether telling young children about an adult's emotional reactions to their future honesty or dishonesty influences their cheating. In five preregistered studies, children aged 3-6 years participated in a challenging test, purportedly to assess their knowledge but actually to measure their honesty (N = 480; 240 boys; all middle-class Han Chinese). Telling 5- to 6-year-olds about a familiar adult's negative emotional reactions to their future dishonesty significantly reduced subsequent cheating, regardless of whether the adult was their homeroom teacher or their mother. Telling 3- to 4-year-olds about their mother's positive reactions to honesty or her negative reactions to dishonesty also reduced cheating. Thus, providing information about a familiar adult's emotional reactions can effectively promote honest behavior among young children. (PsycInfo Database Record (c) 2025 APA, all rights reserved).