Aphasia Categories

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The purpose of this study was to see if training atypical examples within a semantic category was a more efficient way to achieve generalization compared to training typical examples when treating individuals with aphasia. Does training of access to atypical examples within ad hoc categories result in improved access to a larger number of examples within the category than does the training of typical examples? Will patients develop and implement different strategies during improved category generation as a function of treatment? 6 monolingual English speakers between the ages of 39 and 84 with aphasia from Austin, TX hospitals. All had left-hemisphere stroke, stroke onset at least 6 months before, were right-handed, had high school diploma, and normal vision and…show more content…
Five of the 6 demonstrated semantic impairments on 4 subtests of the Psycholinguistic Assessment of Language Processing in Aphasia rest (PALMPA) and the Pyramids and Palm Trees test (PAPT), demonstrating lexical retrieval impairment and not phonological output lexicon impairment. 15 typical and 15 atypical normed items for the categories things at a garage sale and things to take camping; 58 normed features for the garage sale category and 31 normed features for the camping category. Item Selection: 20 healthy younger and older individuals generated items within 5 ad hoc categories (things to take camping, things at a grocery store, things at a garage sale, things that fly, and things that smell). The other 20 young and older individuals rated the generated items on a 7 point typicality scale (1 = very good example of the category or 7= very poor example of category). Categories for treatment were reduced to things at a garage sale and things that you take camping. Items in each category were sorted into 'typical' (15 items with the lowest z-score typicality ratings) and 'atypical'
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