Insomnia symptoms in adolescents seem to be associated with recent engagement in nonsuicidal self-injury (NSSI), a recent study found. Therefore, adolescents who report symptoms of insomnia should also be assessed for self-harm behavior. Adolescent participants were recruited from middle and high schools for a study on mental health and risk behaviors. Data were collected from 387 community adolescents (mean age = 14.19, SD = 1.08; 52% female, whites 88.5%), 9% of whom reported NSSI in the past 6 months. Researchers visited schools and administered self-report questionnaires to students in large groups. Measures assessed NSSI engagement and severity features, overall sleep quality, and insomnia symptoms. They found:

• Greater insomnia symptoms, but not overall sleep quality, were significantly associated with greater likelihood of recent NSSI engagement.
• Sleep variables were not significantly associated with NSSI severity among adolescents with recent NSSI.