Using a Lag Reinforcement Schedule to Increase Phonemic Variability in Children With Autism Spectrum Disorders
- 25 Downloads
Shaping functional vocal language is difficult when an individual has not yet acquired an echoic repertoire and does not emit sufficient phonemes (i.e., speech sounds) for shaping. Few studies have evaluated interventions to increase the frequency and breadth of phonemes. The current study extended Esch, Esch, and Love (2009) by evaluating the effects of a Lag 1 reinforcement schedule on vocal variability and limiting the definition of variability to responses that incorporated a novel phoneme. For 2 of the 3 participants, the cumulative number of novel phonemes, the percentage of trials with variability, and the number of different phonemes emitted per session increased during the Lag 1 intervention phase.
Key wordsechoics lag schedules speech vocal variability
Unable to display preview. Download preview PDF.
- American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th ed., text revision). Washington, DC: Author.Google Scholar
- Leaf, R., & McEachin, J. (1999). A work in progress: behavior management strategies and a curriculum for intensive behavioral treatment of autism. New York, NY: DRL Books.Google Scholar
- Lovaas, O. I. (2003). Teaching individuals with developmental delays: Basic intervention techniques. Austin, TX: Pro-Ed.Google Scholar
- Sundberg, M. L. (2008). Verbal behavior milestones assessment and placement program. Concord, CA: AVB Press.Google Scholar