Assessing Transfer of Stimulus Control Procedures Across Learners With Autism
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The purpose of this study was to evaluate the effectiveness of 2 transfer of stimulus control procedures to teach tacting to individuals with autism. Five participants with differing verbal skills were assessed by a subset of the ABLLS prior to intervention, then were taught 36 previously unknown tacts using the receptive-echoic-tact (r-e-t) and echoic-tact (e-t) transfer procedures. Each transfer method was used separately to establish different tacts, in a multiple baseline design across tacts for 3 sets of stimuli. The results showed that 4 out of 5 participants (who demonstrated mands, tacts, echoics, and sometimes intraverbals prior to the study) acquired all targeted tacts when either r-e-t or e-t training was presented. One participant (who emitted no verbal operants at the onset of the study) did not acquire any tacts. While some participants appeared to learn more quickly with one transfer method, neither method emerged as more efficient with learners with fewer or more extensive verbal skills. The results indicate that both transfer methods promoted the acquisition of tacts for learners with autism with at least minimal verbal skills.
Keywordstransfer of stimulus control receptive-echoic-tact transfer procedure echoic-tact transfer procedure autism
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