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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 responses may be weakened and destructive behaviors may reemerge when reinforcements of communication are delayed or denied due to impossibility or inconvenience of the caregiver or instructors ability to provide said reinforcement in a timely manner procedures are needed to increase the effectiveness of FCT in situations in which it is impractical or impossible to deliver a given reinforcer Research design and design rationale This study was broken up into 4 phases the fourth phase was completed with only 1 participant in only one condition because of time limitations on the participants hospital admission Phase 1 Functional Analyses and Descriptive Assessments Alternating treatment with no baseline design During this analysis a test condition and a control condition were compared using a multi-element design Phase 2 Communication and Discrimination Training Phase 3 Treatment Evaluation of FCT with Discriminative Stimuli Between series alternating treatment ABAB design was used to compare FCT EXT vs ACT EXT in two conditions for one participant Amy and in one condition for one participant Ned Phase 4 Independent Effects of FCT and EXT Between series alternating treatment and a final treatment design was used to compare FCTACT wo EXT vs EXT alone with the final series being strictly FCTACT wo EXT The order of presentation for Amys discrimination training were stimulus-present and stimulus-absent periods that were alternated every 30 s for the duration of the 10-min session For Ned one SD at
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