ABSTRACT
Replication is important in all research paradigms, but the replication rate in published single case design (SCD) research is higher than that of between-groups research. This chapter addresses the parameters of replication students should attend to in the design, implementation, and evaluation of research. In SCD research, there are three primary ways to ensure within-study replication, all of which involve repeating a change between two adjacent conditions. When a researcher conducts sufficient replications and demonstrates consistent effects, he or she has demonstrated experimental control of the independent variable on the dependent variable. Within an SCD study, researchers must include at least three inter- or intra-participant replications; additional designs can be used to add additional inter-participant replications. When a researcher carries out a planned series of studies that incorporate systematic changes from one study to the next and identifies them as a replication series, a systematic replication clearly exists.
