Abstract
This investigation used a 4 second constant time delay (CTD) procedure to teach lifetime sport skills to adolescents with severe to profound intellectual disabilities. The CTD procedure employed verbal description plus physical assistance as the controlling prompt. The effectiveness of the CTD procedure was evaluated with a single-subject multiple probe design across three skills and replicated across four subjects. Results indicated that the CTD procedure was effective in teaching all subjects to perform one step bowling, overhand throwing, and short distance putting. These learned skills were maintained with at least 84.5% accuracy over 42 days after terminating the CTD instruction. When efficiency data were analyzed, a mean of 16 sessions, a mean of 187 trials, and a mean of 258 minutes in teaching one skill to reach the instructional criterion were found across subjects while a mean percentage of errors of 8.3% was obtained across subjects and skills.
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