Table 1. Deviations from the Preregistration.

Specific rejection sensitivity	In S1: ri-CLPM with victimization and rejection sensitivity of three peer scenarios used in S2
	In S1: ri-CLPM with victimization and rejection sensitivity of three peer scenarios notused in S2
	In S2: ri-CLPM with victimization and teacher rejection sensitivity
Sensitivity check	In S1 and S2: ri-CLPMs with log-transformed victimization and log-transformed general rejection sensitivity
Additional checks	In S1 and S2: CLPMs with victimization and general rejection sensitivity
	In S2: We ran a multi-group ri-CLPM to examine whether the model associations would significantly differ between boys and girls.
	In S2: We ran two ri-CLPMs with a time invariant predictor (age). Once to examine whether age could predict the observed scores for victimization and rejection sensitivity, and once to examine whether age could predict the random intercepts.

Note. ri-CLPM = random intercept Cross-Lagged Panel Model, CLPM = Cross-Lagged Panel Model.