Single-case experimental designs. Evaluating interventions in research and clinical practice.

Area of Science:

• Psychology
• Clinical Research Methodology

Background:

• Single-case designs are crucial for evaluating treatment effectiveness in individual clients.
• They offer scientifically valid inferences, surpassing uncontrolled case studies.
• Despite their utility, single-case methods are underutilized in training.

Purpose of the Study:

• To discuss the key features of single-case design methodology.
• To illustrate specific designs and methods for drawing inferences.
• To address critical issues such as feasibility, generalizability, and ethics.

Main Methods:

• Discussion of core principles of single-case designs.
• Illustration of various single-case experimental designs.
• Analysis of practical and ethical considerations.

Main Results:

• Single-case designs enable scientifically valid treatment effect inferences.
• Ongoing assessment and logical underpinnings improve clinical care.
• The methodology is valuable for research and enhancing individual client outcomes.

Conclusions:

• Single-case designs are powerful tools for assessing treatment efficacy in individuals.
• Their application can significantly improve clinical practice and therapeutic outcomes.
• Increased training in single-case methods is recommended for researchers and practitioners.