The Use of Prompts and Precision Teaching to Address Speech Sound Disorders in a 17-Year-Old Girl With Autism.

Precision teaching is a measurement system that uses frequency as its basic data and plots those data on a standard celeration chart for practitioners to make decisions (Maloney, 1998). Kay, a 17-year-old girl with autism spectrum disorder and profound speech sound disorder, participated in this multiple-baseline across-behaviors study. The syllables "thu," "fu," and "cu" were targeted for higher frequencies of correct echoic responding in isolation. Lip-tongue-teeth position prompts, frequency building (Fabrizio & Moors, 2003, , (1-2), 23-36), and feedback were used in brief timed practice trials for the first 2 skills. Priming (Cihon et al., 2017) was also added to the third syllable. The frequency of correct responses accelerated from low levels in baseline to a frequency aim of 60 per minute or higher, with intervention for all 3 targets. The accuracy of her articulation with 30 functional words with the component consonant sounds was measured and showed significant improvements from baseline to postintervention. The outcomes representing fluent performance were also achieved. The implications of training for fluency of syllables on word speech are discussed.