This study examined the effects of child characteristics and parent coping practices on parenting stress, based on a sample of parents of 64 boys with behavioural problems and a comparison group with parents of 128 boys. All parents completed questionnaires about stress, length of education, child characteristics, social support, sense of coherence and coping practices, in addition to interviews in their home about daily activities and relations with the child. A hierarchical regression model for predicting parenting stress was tested, and the results showed that having a child with behavioural problems predicted 57% of the variance in parenting stress. Social support and parental resources and strategies added to the prediction of parenting stress after controlling for family demographics and child characteristics. The parents in the clinical group (with boys referred to psychiatric units) were more often single parents with lower education, more often unemployed, less content with social support, and had lower scores on comprehensibility. These parents were significantly more stressed than parents in the comparison group. All these risk factors might be barriers against establishing a protective frame around a child. These parents, with a difficult child-rearing situation, who perceived less support and had fewer material benefits, seemed to be more vulnerable.