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  • Title: An evaluation of the use of eye gaze to measure preference of individuals with severe physical and developmental disabilities.
    Author: Fleming CV, Wheeler GM, Cannella-Malone HI, Basbagill AR, Chung YC, Day KG.
    Journal: Dev Neurorehabil; 2010; 13(4):266-75. PubMed ID: 20629593.
    Abstract:
    OBJECTIVE: The purpose of this study was to examine whether duration of eye gaze could be used to identify reinforcing stimuli for four individuals with severe physical and developmental disabilities, as well as the effectiveness of the assessment using different numbers of stimuli (i.e. 6 vs 14). METHODS: This study measured each student's preferences in a paired stimulus preference assessment using duration of eye gaze toward various stimuli. Following the preference assessment, a reinforcer assessment was conducted within a reversal design to determine the accuracy of the preference hierarchy. RESULTS: Results indicated that duration of eye gaze toward a stimulus was successful in identifying preferred stimuli that functioned as reinforcers for all participants. Additionally, the shorter preference assessment produced measures of similar accuracy in considerably less time. CONCLUSION: Eye gaze can be used to identify reinforcing stimuli for individuals with severe physical and developmental disabilities.
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