Measuring psychotherapy process with the Adolescent Psychotherapy Q-set (APQ): Development and applications for training.

This study presents the initial findings from the development of an adolescent version of the Child Psychotherapy Q-set (CPQ, Schneider, 2003). The CPQ is a psychotherapy process measure that utilizes Q-methodology to define psychotherapy process in an empirical form suitable for quantitative analysis. This new instrument, the Adolescent Psychotherapy Process Q-set (APQ), was developed to be pantheoretical in assessing the process of psychotherapy with adolescents. Panels of "expert" psychodynamic (PD) and cognitive-behavioral (CB) theoreticians and practitioners (N = 22) rated the 100 APQ items, and these ratings were factor analyzed to develop general prototypes of ideally conducted therapy for each respective orientation. Agreement between and amongst the experts was examined; in order to determine the reliability of, and shared variance between, each prototype. Coefficient alpha reliabilities were high for both PD (.93) and CB (.94) orientations. A significant correlation between the factor scores of each prototype (r = .31; p ≤ .01) was found. In a second study, a case example is provided to demonstrate the applications of the APQ and the prototypes in psychotherapy training and supervision. (PsycINFO Database Record (c) 2010 APA, all rights reserved).