A Systematic Review of Instructional Comparisons in Single-Case Research

Studies included in this review typically met common internal validity standards, such as reliability measurement, but often did not include controls specific to comparison designs.

Comparisons often included young children with autism and were frequently conducted by researchers in self-contained classroom settings. Systematic instruction was effective in nearly all comparisons, although many included undifferentiated data (i.e., both interventions were equally effective), and within-participant replications were often inconsistent (i.e., outcomes varied across comparisons for a single participant).