show strong genetic components in the link between externalizing behaviour in parents and the children, such as parental drinking and behavioural control in the offspring [15,16]. Also, social strains such as negative life events, family conflict or dysfunction, disruption of routines, or neglect can also foster maladjustment [19,20]. From the social strain perspective, a lack of association between parental alcohol abuse and satisfaction at school could simply be explained by the school representing an escape from a troublesome home environment for some adolescents.