A summary of reporting guidelines and evaluation domains for using single-case experimental designs and recommendations for the study of eating disorders

The insights and activities that regularly occur in clinical settings are an underutilized wellspring of potential scientific advances. Single-case experimental designs (SCEDs) include a collection of methods for testing hypotheses in one individual (or a small number of individuals) at a time that are particularly well suited to clinical settings. Their strengths include their potential for maximizing both internal and external validity by way of tight experimental control over threats to internal validity and flexibility in application and inclusion criteria. Despite these advantages, the eating disorder field has not made use of SCEDs to a similar extent as other research areas, providing an opportunity for expansion. Recent advances in organizing SCED standards have resulted in the publication of two sets of reporting guidelines relevant to eating disorders research. These guidelines are integrated and summarized alongside descriptions of domains for evaluating their methodological rigor. Example research questions of potential interest to the eating disorder field are illustrated with SCEDs, and several issues to consider when using SCEDs in eating disorders research are described. It is recommended that researchers aiming to use SCEDs refer to this paper and the resources cited herein when designing and reporting their work. Finally, it is hoped that individuals with access to clinical samples use this paper as a source of inspiration for testing their unique clinical insights.