The ability of the Young Adult Self-Report (YASR), the Symptom Checklist (SCL-90) and the General Health Questionnaire (GHQ-28) to predict maladjustment across a 2-year time-span was assessed in a general population sample of 528 18- to 22-year-olds. Referral for mental health services and need for professional help were predicted by total problem scores of the YASR, the GHQ-28 and the SCL-90 and by the internalizing scale of the YASR. Furthermore, the internalizing scale predicted suicide attempts or suicidal ideation, whereas the externalizing scale predicted police contacts. The YASR delinquent behavior syndrome was the only significant predictor of alcohol abuse. The findings supported the validity of the YASR as an instrument for the assessment of psychopathology in young adults.