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A Review of the Efficacy of the Picture Exchange Communication System Intervention

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TitleA Review of the Efficacy of the Picture Exchange Communication System Intervention
Publication TypeJournal Article
AbstractBackground: Abstract The Picture Exchange Communication System (PECS) is a communication program that has become widely used, especially with children with autism. This paper reports the results of a review of the empirical literature on PECS. A descriptive review is provided of the 27 studies identified, which included randomized controlled trials (RCTs), other group designs and single subject studies. For 10 appropriate single subject designs the percentage of non-overlapping data (PND) and percentage exceeding median (PEM) metrics were examined. While there are few RCTs, on balance, available research provides preliminary evidence that PECS is readily learned by most participants and provides a means of communication for individuals with little or no functional speech. Very limited data suggest some positive effect on both social communicative and challenging behaviors, while effects on speech development remain unclear. Directions for future research are discussed including the priority need for further well-conducted RCTs.
AuthorsPreston, D., and Carter M.
Year of Publication2009
PublicationJournal of Autism and Developmental Disorders
Volume39
Issue10
Pages1470-1486
ISSN0162-3257 (print) 1573-3432 (online)
Publisher DOIhttp://link.springer.com/article/10.1007/s10803-009-0763-y
Keywords (MeSH)autistic disorder, child, communication aids for disabled
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