The Group Questionnaire: a clinical and empirically derived measure of group relationship.

The Group Questionnaire (GQ) is a recently developed self-report measure of the therapeutic relationship based on Johnson and colleagues (2005) three-factor model; Positive Bonding, Positive Working, and Negative Relationship. This study validated Johnson's model with a new and extended sample and created a shorter 40-item trial version. SEM analysis of the GQ tested whether it produced the same three-factor structure found in three earlier studies with 486 participants from three populations-outpatient university counseling center, non-patient AGPA process groups, and inpatient state hospital. Results of further SEM refinements demonstrated that a final 30-item version had good fit to the three-factor model although distinct differences in response pattern were found between the three populations. Implications for future utility and clinical relevance of the GQ are discussed.