Presents a speculative model for predicting differential rates of therapeutic change. From a review of 52 comparative psychotherapy studies, certain hypothesized relationships between the characteristics constituting the model and a variety of psychological treatment procedures were assessed. Use of the model for generating and guiding research is…

Sees need for research examining differences among psychotherapy treatments to use model to narrow search for variables mediating between treatment type and outcome. Asserts that tests of treatment selection models that cut across narrow theoretical differences among psychotherapies and that operationalize definitions of patient types hold promise…