[Operationalized Psychodynamic Diagnosis - Structure Questionnaire (OPD-SQ) in Youth: First Results on Reliability...

Operationalized Psychodynamic Diagnosis - Structure Questionnaire (OPD-SQ) in Youth: First Results on Reliability and Validity The OPD structure axis questionnaire (OPD-SQ) demonstrated good empirical findings and usability in therapeutic work. Therefore, the aim of this study was to verify the OPD-SQ for an adolescent sample in order to further implement the questionnaire as an economic instrument in clinical childhood and adolescence psychiatry routine. The overall sample consisted of 180 adolescent inpatients (72.8 % female) and 152 pupils (57.9 % female). In order to test reliability, Cronbach's alpha and discriminatory power were assessed. To test validity, YSR11-18 data was collected for the overall sample, and further data (AIDA, LoPF Q12-18, SKID-II, WISC-IV) was collected for the inpatient-sample. Cronbach's alpha was satisfactory for overall OPD-SQ, and all dimensions and sub-dimensions. The differences in mean values between inpatients and pupils were as expected. When controlled for overall symptom severity, gender differences lost significance. Adolescents with one or more SCID-II diagnoses had significantly lower psychic structure. Both construct-related questionnaires (AIDA, LoPF Q12-18) correlated high with OPD-SQ, no correlations were found for psychic structure and intelligence. OPD-SQ proved to be well applicable for the use on adolescents and can be implemented as an economic instrument for the measure of psychic structure in clinical adolescent psychiatry routine.