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Abstract
The use of early verbal categories, their event types, and the emergence of verbal inflections (-ing, -s, and -ed) were analyzed in data from four participants with motor speech disorders aged 9;5–13;9 (years;months) who used speech-generating devices to converse with a familiar adult. The study was conducted through a secondary analysis of a corpus of data collected as part of another study. It documents the production of verbs and the emergence of verb inflections in natural conversations between each of the participants and a member of their educational team over a period of up to 10 months. All participants used both action and state verbs, although action verbs were dominant. The emergence of the inflections -ing, -s, and -ed varied and were distributed selectively with different verb categories and event types. The results are discussed in terms of language development and are considered in terms of the findings from research with children without disabilities, which suggest that action verbs precede state verbs, and inflections are primarily acquired based on their correspondence to the verbal category (action–state). Implications for theory, practice, and further research are discussed.
Acknowledgements
This study was conducted in partial fulfillment of the first author?s doctoral degree and would not have been possible without the mentoring and support of her doctoral committee. Warms thanks extended to Eve Sweeter and Eve Clark for their valuable comments in this research.
Sincere thanks to Kate Lynn Lindsey for her diligent proofreading of the previous version of this paper. Earlier versions of this article were presented at the 2014 Annual Convention of the American Speech and Hearing Association in Orlando, Florida and at the 2015 Annual Conference of The International Society for Augmentative and Alternative Communication (ISAAC) in Raanana, Israel.
