Purpose The purpose of this study was to systematically review intervention research on young children with severe and multiple disabilities conducted in South Korea, analyze publication trends and general research characteristics, and evaluate method...
Purpose The purpose of this study was to systematically review intervention research on young children with severe and multiple disabilities conducted in South Korea, analyze publication trends and general research characteristics, and evaluate methodological quality based on established quality indicators.
Method Nineteen intervention studies published in peer-reviewed journals in South Korea were analyzed. Content analysis examined key methodological characteristics, including research designs, variables, intervention settings, and interventionists. In addition, singlesubject studies were evaluated using the evidence-based practice quality indicators proposed by the Council for Exceptional Children (CEC; 2014).
Results Most studies employed single-subject designs and focused on children aged three to five years, with augmentative and alternative communication (AAC) as the most frequently used intervention. Outcomes primarily targeted communication and social interaction skills, and few studies reported effect size measures. Quality indicator analysis showed relatively high compliance in data analysis, outcome measurement, and internal validity, but lower compliance in indicators related to replicability, such as interventionist qualifications and intervention fidelity.
Conclusion This review highlights both the strengths and methodological limitations of domestic intervention research for young children with severe and multiple disabilities and underscores the need to improve research design and reporting standards to support evidence-based practice and practical application.