Bradley, V., Davies, R., Parris, B., Fan Su, I. and Weekes, B. S., 2006. Age of Acquisition Effects on Action Naming in Progressive Fluent Aphasia. Brain and Language, 99 (1-2), pp. 117-118.
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Several studies report effects of the age of acquisition of a word (AoA) on object (noun) naming in aphasia (Hirsh and Ellis, 1994 and Hirsh and Funnell, 1995). These reports include studies of patients with dementia of the Alzheimer’s type and progressive fluent aphasia or semantic dementia (Kremin et al., 2001, Lambon Ralph et al., 1998 M.A. Lambon Ralph, K.S. Graham, A.W. Ellis and J.R. Hodges, Naming in semantic dementia—What matters?, Neuropsychologia 36 (1998), pp. 775–784.Lambon Ralph et al., 1998 and Ukita et al., 1999). Recently, there has been interest in investigating AoA effects on naming of action pictures (verbs). Using multiple regression methods, three studies report independent effects of AoA on naming in non-aphasic speakers. Morrison, Hirsh, and Duggan (2003) asked adults to name pictures depicting an action and then performed a simultaneous multiple regression on naming latency for each picture. They found AoA and also a measure of name agreement predicted performance. They also asked participants to name the verbs used in action pictures presented visually and found that AoA was the only significant predictor of verb naming latency. Bogka et al. (2003) compared the effect of AoA on naming pictures of objects and actions with English and Greek speakers. They found significant effects of AoA on object and action naming in both languages that were independent of correlated variables such as imageability and visual complexity. Schwier, Boyer, Meot, Bonin, and Laganaro (2004) also reported effects of AoA, name agreement, and image agreement on action naming in French. We know that action naming can be impaired in patients who have dementia and according to some writers verb naming is more impaired than noun naming (Grossman et al., 2003). However, although there is convincing evidence that AoA has an impact on object naming performance in dementia—including patients with progressive aphasia—it is not known whether AoA has an effect on the action naming performance of patients or if these effects are independent of correlated variables including word frequency, word length (including the number of phonemes and syllables), familiarity, imageability and visual complexity. Here, we report for the first time an investigation of the effects of AoA on the object and action naming performance of a patient who has progressive fluent aphasia.
Technology > Medicine and Health > Medicine and Surgery
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