We followed the same rules when creating change groups based on internalizing T scores. On the basis of mothers’ reports, there were 67 stable lows (SL), 29 improvers (IM), 41 deteriorators (D), 60 stable internalizers (SI), and 17 mixed. On the basis of teachers’ reports, there were 111 SLs, 41 IMs, 24 Ds, 11 SIs, and 27 mixed. Due to the limited sample size in some groups, interactions with sex were not considered, although sex was controlled for in all models. We also controlled for T1 temperament (i.e., the predictor of interest in the given analysis), but we do not present information on T1 temperament to simplify the presentation. Father-reported maladjustment was not used in the analyses because some of the groups were quite small.
