ABSTRACT
In this chapter, we describe a subcategory of quasi-experimental time-series designs that can be used with very few participants. These single subject designs have many of the characteristics that govern traditional group timeseries designs, such as the numerous repeated measures on each participant and the initiation and withdrawal of treatment. However, using very few participants increases the flexibility of the design and leads to completely different methods of data analysis. Therefore, we have chosen to devote a separate chapter to these types of designs. The topic of single subject designs is complex, and contains too much material to be covered completely in a single chapter. For those interested in a complete treatment of the topic, we suggest the text by Kazdin (1982). For a clinical perspective on single subject design, Ottenbacher (1986) is an excellent work. For the analysis of single subject designs, we suggest Kratochwill and Levin (1992).
