Psychotherapy Outcome Research: Issues and Questions.

Area of Science:

• Psychotherapy research
• Clinical psychology
• Evidence-based practice

Background:

• Growing emphasis on identifying evidence-based therapies (EBTs) to guide training, assessment, and policy.
• EBT lists are increasingly used to inform professional standards and healthcare policies.

Purpose of the Study:

• To critically examine the methodological limitations of current approaches to identifying EBTs, particularly randomized control trials (RCTs).
• To discuss the impact of these limitations on the conceptualization and practice of psychotherapy.
• To advocate for broader research methodologies to evaluate therapeutic approaches.

Main Methods:

• Critical analysis of the methodology and epistemological assumptions of randomized control trials (RCTs) in psychotherapy research.
• Discussion of how RCTs favor specific types of therapies and outcomes.
• Consideration of alternative research methods, including those that address therapist allegiance.

Main Results:

• Randomized control trials (RCTs) favor therapies that are manualized, symptom-focused, short-term, and yield immediate outcomes.
• The natural science approach inherent in RCTs may disadvantage therapies aiming for broad, recovery-based changes.
• Current policies based on EBT lists may unduly restrict clinical practice and conceptualization.

Conclusions:

• Methodological concerns with RCTs limit the external validity and applicability of identified EBTs.
• A broader range of research methods is necessary to accurately evaluate diverse therapeutic approaches.
• Policies based solely on current EBT lists may not serve the best interests of the psychotherapy profession or clients.