Use of Single-System Design to Evaluate the Effectiveness of Cognitive Behavioral Therapy of Depression

임상실천 평가를 위한 단일체계설계의 적용 -우울증 감소를 위한 인지행동치료에 대한 평가를 중심으로-

  • Published : 2008.05.31


The purpose of this study, which has its focus on the utilization of single-system design for practice evaluation, is to evaluate the effectiveness of cognitive behavioral therapy of depression by using a AB design. 3 inpatients in a local hospital with a diagnosis of major depressive disorder agreed to participate in this study. The AB design includes a 2weeks of the baseline phase and 3 weeks of the intervention phase. More than one outcome measures were used in order to validate the results of the measurement. Data were analyzed statistically as well as visually. Tools such as trend line and trend index were used to improve the accuracy of the visual analysis and the 3 standard deviation approach was used for statistical significance test. The results showed that all clients improved. This study lists some advantages of using single-system design for evaluating clinical practice: monitoring, encouraging clients' active role in social work process, and easy data analysis.