Intervention research in anorexia nervosa - a plea for single case experimental designs

Area of Science:

• Psychiatry
• Clinical Psychology
• Eating Disorders Research

Background:

• Anorexia nervosa (AN) is a severe eating disorder with high mortality and limited understanding of its development and maintenance.
• Current psychological intervention research for AN is hindered by small sample sizes and methodological heterogeneity, complicating treatment evaluation.
• There is a pressing need for improved treatments and research methodologies in the field of AN.

Purpose of the Study:

• To discuss the challenges encountered in psychological intervention research for anorexia nervosa.
• To propose single case experimental designs (SCEDs) as a complementary research method.
• To highlight the potential benefits of SCEDs for advancing AN knowledge and treatment development.

Main Methods:

• Discussion of population-related, therapist-related, and methodological challenges in AN intervention research.
• Introduction and advocacy for the use of single case experimental designs (SCEDs).
• Comparison of SCEDs with current methods for assessing treatment efficacy.

Main Results:

• Identified significant challenges in current AN psychological intervention research.
• Proposed SCEDs as a viable method to address these research limitations.
• Argued that SCEDs can enhance the evaluation of treatment efficacy.

Conclusions:

• SCEDs can help overcome common research challenges in anorexia nervosa.
• Implementing SCEDs can contribute valuable knowledge to AN etiology and maintenance.
• The adoption of SCEDs is recommended to foster the development and evaluation of more effective AN treatments.