Abstract
This study compared vibratory and auditory feedback for reducing excessive vocal loudness in a woman with moderate intellectual disability. The 2 forms of feedback were delivered through small portable devices equipped with a vibratory box at the woman's wrist and an earpiece, respectively. The use of feedback was combined with reinforcement. Data showed that both forms of feedback (plus reinforcement) were successful. Yet, auditory feedback appeared somewhat more effective. The differences in effectiveness are discussed in relation to differences in practicality.
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