Date of Graduation


Document Type


Degree Name

Master of Science in Statistics and Analytics (MS)

Degree Level



Statistics and Analytics


Ronna C. Turner

Committee Member

Lo, Wen-Juo

Second Committee Member

Christian, David D.


Counseling, Methodology, Single Case Research Design


Single case research design (SCRD) is a common methodology used across clinical disciplines to determine treatments effectiveness by comparing treatment conditions to baseline conditions in individual cases, usually among researchers working with smaller samples. Although popular within behavioral disciplines such as special education and behavioral analysis, studies have begun to emerge in counseling. However, guidance and current understanding of the use of SCRD in counseling is limited. A content analysis of counseling journals from 2003 to 2014 yielded only 7 studies using SCRD. In 2015, the flagship counseling journal, Journal of Counseling and Development, published a special issue on the applicability of SCRD in counseling. The extent to which this special issue has impacted and guided the field of counseling is unknown and many developments in SCRD literature have emerged, including the use of effect indices to determine treatment effectiveness. Therefore, this study sought to illuminate the current trends of SCRD studies in counseling from 2015 to 2021, investigate the use of effect indices by researchers for interpretation of treatment effectiveness, and explore the relationships between these measures of effect indices to further inform the methodological practices in the counseling field.