Sleep patterns and psychological functioning in families in northeastern Iran; evidence for similarities between adolescent children and their parents.

Sleep and well-being of adolescents and their parents are related, but data from non-Western countries are scarce. The aim of the present study was to investigate the relationship between adolescents' and their parents' sleep patterns and psychological functioning in northeastern Iran. A total of 81 families (81 mothers, 78 fathers, 130 children aged 12-20 years) took part in the study. They individually and separately completed questionnaires related to sleep and psychological functioning. Sleep quality was related within families. Poor sleep among children and parents was related in each case to more depressive symptoms and stress. Mothers' sleep and psychological functioning were more related to adolescent children's sleep and psychological functioning than were those of fathers. Results confirm research showing that adolescent's and parents' sleep and psychological functioning are inter-related. This association holds also true for families in northeastern Iran, suggesting that the association reflects universal features of family functioning.