title: A Comparison of PECS and iPad to Teach Requesting to Pre-schoolers with Autistic Spectrum Disorders.
abstract: Few studies have compared the efficacy of the Picture Exchange Communication System (PECS) and iPads used as speech generating devices (SGDs), and none have targeted preschoolers. This study compares the relative efficacy of PECS and an iPad/SGD with three preschool-aged children with autism spectrum disorder and limited functional speech who lived in Malta. The study utilized an adapted alternating treatment design embedded in a multiple baseline design, with requesting of reinforcers as the dependent variable. Visual analysis of the results indicated that all participants required more prompted trials and sessions for the iPad/SGD condition. All participants learned a three step navigational sequence on the iPad. Participant preference probes were inconclusive and were not linked to speed of acquisition of requesting skills. Results suggest that both PECS and an iPad could be appropriate for teaching requesting skills to beginning communicators.
authors.affiliation: a Access to Communication and Technology Unit , Student Services Department , Hamrun , Malta ;
authors.forename: May M
authors.initials: MM
authors.lastname: Agius
authors.affiliation: b Department of Human Communication Sciences , University of Sheffield , Sheffield , UK.
authors.forename: Margaret
authors.initials: M
authors.lastname: Vance
mesh_terms: D000067877:Autism Spectrum Disorder / Q000534:rehabilitation*; D002675:Child, Preschool; D003143:Communication Devices for People with Disabilities; D034201:Computers, Handheld; D006801:Humans; D007858:Learning; D008297:Male
keywords: augmentative and alternative communication; autism spectrum disorder; communication intervention; iPad; multi-step requesting; picture exchange communication system; speech-generating device