Pair-wise correlations between phenotypes are presented in Table 2. Correlations were generally weak-to-moderate. Of the environmental measures negative life events tended to have the strongest correlations with the behavioural phenotypes, with correlations ranging from 0.17 (anxiety) to 0.48 (delinquency). Correlations between maternal negativity and the behavioural phenotypes ranged from 0.18 (physical aggression) to 0.38 (oppositionality). Of the three environmental measures paternal negativity had the weakest relationships with the behavioural phenotypes, with correlations ranging from 0.12 (delinquency) to 0.23 (oppositionality). Sex differences in the magnitude of correlations were not significant (95 % confidence intervals were overlapping).Table 2Pair-wise correlations between environmental measures and behavioural phenotypesM.Neg.P.Neg.N.L.E.Dep.AnxietyOppo.Delinq.Paternal negativity0.53Negative life events0.260.17Depression0.270.180.32Anxiety0.230.170.170.59Oppositionality0.380.230.360.450.24Delinquency0.240.120.480.360.120.62Physical aggression0.180.140.290.220.03 (ns)0.560.59All correlations significant to at least p < 0.01, except for ns not significant M.Neg. maternal negativity, P.Neg. paternal negativity, N.L.E. negative life events, Dep. depression, Oppo. oppositionality, Delinq. delinquency
