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J Appl Behav Anal. 2011 Summer;44(2):327-40. doi: 10.1901/jaba.2011.44-327.

Comparison of progressive prompt delay with and without instructive feedback.

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  • 1Vanderbilt University, USA.


We examined the effectiveness and efficiency of 2 instructional arrangements using progressive prompt delay (PPD) with 3 young children with autism and 1 child with developmental delays. Specifically, we compared PPD with instructive feedback (IF) to PPD without IF in an adapted alternating treatment design. The results suggested that (a) children with autism and developmental delays can learn when PPD is used with IF, (b) IF can be an effective method of instruction for young children with autism and developmental delays, and (c) the combination of PPD and IF can increase the efficiency of instruction. Data collected 8 to 9 weeks after instruction ended showed that participants maintained mastery of 58% to 92% of the acquired behaviors. We discuss these results within the constraints and limitations of the data and recommend areas for future research.


autism spectrum disorders; instructional efficiency; instructive feedback; progressive prompt delay; response prompting

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