T2 and T3. Stable externalizers (SE) had externalizing an T score above 60 at each time, whereas those in the mixed group had externalizing T scores above 59 at T1, below 60 at T2, and above 59 at T3 (or below 60 at T1, above 59 at T2, and below 60 at T3). On the basis of mothers’ reports, there were 86 SLs, 11 IMs, 47 Ds, 49 SEs, and 21 mixed. On the basis of teachers’ reports, there were 110 SLs, 30 IMs, 32 Ds, 25 SEs, and 17 mixed. The mixed group was not considered because their patterns were heterogeneous. Note that the SLs differed from CONTs in the previous analyses because the former but not the latter could be co-occurring with internalizing problems. Fathers’ reports of maladjustment were not analyzed because some of the groups were quite small.
