The bright and the dark side of peer relationships: Differential effects of relatedness satisfaction and frustration at school on affective well-being in children’s daily lives.

= 317). In Study 1, 4th to 6th graders reported their PA and NA 2 times daily and their relatedness satisfaction and frustration once a day for 2 weeks. In Study 2 and Study 3, 4th graders and 5th graders, respectively, reported their PA and NA 4 times daily and their relatedness satisfaction and frustration once a day for 4 weeks. Across the 3 studies, relatedness satisfaction and frustration were psychometrically separable and exhibited differential effects such that relatedness satisfaction was significantly associated primarily with PA, and relatedness frustration was significantly associated only with NA at between- and within-person levels. Explaining interindividual differences suggested that the association between daily relatedness and affective well-being was weaker for generally highly integrated children and stronger for usually rather excluded children. (PsycInfo Database Record (c) 2020 APA, all rights reserved).