Sex differences and parallels in the development of externalizing behaviours in childhood: Boys’ and girls’ susceptibility to social preference among peers

This study examined whether being poorly preferred by peers may partially explain why boys with oppositional behaviour develop more conduct problems than girls. Children from the general Dutch population attending regular elementary schools (N = 759, 50.3% boys) were followed annually from age 7 to 10 years. Teachers-rated externalizing behaviour and peer-nominated social preference was assessed across four waves. Autoregressive cross-lagged models indicated that oppositionality predicted increases in conduct problems. Above and beyond this direct link, oppositionality predicted low social preference in subsequent years, which in turn predicted an increase in conduct problems. In this latter pathway, sex differences were found. That is, oppositional boys were as likely as oppositional girls to show an increase in low social preference one year later. However, boys who had low social preference scores showed stronger increases in conduct problems one year later, compared to girls who had low social preference scores. Hence, developmental models of externalizing behaviour should consider the possible sex-differential impact of troublesome peer-relationships to understand the development of milder to more severe externalizing behaviours.     

Is knowledge of family history related to psychosocial functioning? Comparison of adolescents living in institutional care and adolescents living with their biological families

We tested adolescents growing up in institutional care and adolescents living with their birth families using the ‘Do you know?’ scale and other measures of psychosocial functioning. We found that children living in group homes knew significantly less of their family history, exhibited more behavioural problems and had a more external locus of control. Moreover, the correlations between self-esteem and knowledge of family history were significantly different between the groups. This may suggest that the contribution of the knowledge of family history to self-esteem is different depending on the quality of family history. We also found a significant correlation between locus of control and behavioural problems for the children in institutional care, but not children living with their birth families, which may indicate that their behavioural problems may partially stem from the sense of lack of control over their lives.