Educational Research Single-Subject Critique Establishing Discriminative Control of Responding Using Functional and Alternative Reinforcers During Functional Communication Training Wayne W. Fisher, David E. Kuhn, and Rachel H. Thompson Appropriateness of research question or purpose: The purpose of this research was interesting and of value as it focused on problems that often occur when Functional Communication Training (FCT) is in use. This study sought to find effective solutions as desired “. . .response[s] may be weakened and …showed first 75 words of 472 total…

…showed last 75 words of 472 total…had incurred, the rationale for design for Phases 3 and 4 were to show contrast between the various interventions. Overall study limitations: This study covered it’s bases well and the only limitation I can rightly see is one that is prone to single-subject research, that is, the use of only two participants. It would have strengthened this study further too if the researchers had been able to complete the final Phase 4 on both of the participants.