Attachment as Part of Personality Structure: A Comparison of Self- and Parent-Reports in Adolescents Summarywith Personality Disorder, Depression, and Anorexia Nervosa The present study examines attachment deficits as part of the personality structure in adolescents with personality disorders, depression, and anorexia nervosa using the OPD-CA2 Structure Questionnaire. The aim was to analyze systematic differences between the diagnostic groups and differences between self- and parent-reports and to identify potential discrepancies. The results show remarkable deficits in the dimension attachment of the OPDCA- 2 axis structure across all examined groups while adolescents with AN showed significantly lower impairment. Significant differences between self- and parent-perceptions were observed in depressed adolescents. The study emphasizes the relevance of assessing attachment related to personality structure for diagnostics and treatment planning in adolescent psychotherapy.