1. Paradoxical intention: Its clarification and emergence as a conventional behavioral procedure;Ascher;the Behavior Therapist,1989
2. The changing nature of behavior therapy;Craighead;Behavior Therapy,1990
3. Current philosophical issues in the scientific evaluation of behavior therapy theory and outcome;Erwin;Behavior Therapy,1992
4. The increasing reference to “cognitive” variables in behavior therapy: A 20-year empirical analysis;Hawkins;the Behavior Therapist,1992
5. Treatment research: The investigation and evaluation of psychotherapy;Kazdin,1986