Psychological profile and sleep organization in young subjects with poor quality of sleep

Abstract The personality traits defined by the Minnesota Multiphasic Personality Inventory (MMPI) and sleep data were analyzed in 45 young subjects with poor quality of sleep. The subjects were divided into three groups: Group 1 had no T score ⩾ 70, Group 2 had one or more single T scores ⩾ 70, and Group 3 had T scores ⩾ 70 in one or more specific groups of scales. The first 2 nights of sleep were polygraphically recorded. Subjects in Group 1 were considered to be normal, those in Group 2 were characterized by depression and anxiety, and those in Group 3 had psychopathic personality traits and somatic disorders. Differences in sleep data were noted among groups. The severity of the sleep disorders was related to the degree of the psychological problems.