The purpose of this study was to examine the effects of a three-step decoding strategy with constant time delay on teaching and acquisition of decoding and word reading skills to four students with mild and moderate intellectual disability and to measure the generalization of those skills to untaught words. A multiple probe design across participants was used to examine the percentage of sounds correctly decoded and words correctly read. The results indicate that all four participants learned to decode and read words using the two strategies. Furthermore, all participants showed an increased learning efficiency in decoding and reading when teaching the second set of similar words. Generalization data showed that only two participants were able to decode and read some of the new words before teaching them, while all participants' ability to decode the letters of the new words was improved. Keywords: Reading, Phonics, Three-step decoding, Time delay, Intellectual disability
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