Browsing by Subject "Lexical retrieval"
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Item Clinician and caregiver-administered treatment for naming in neurodegenerative disease(2015-05) Shuster, Kaleigh Marie; Henry, Maya; Marquardt, ThomasAbstract: Aphasia treatment research to-date indicates that lexical retrieval training can result in improved naming ability. Traditionally, treatment is administered by a speech-language pathologist, with little involvement of caregivers or carry-over of practice into the home. The current study examined the effects of a lexical retrieval training hierarchy that was implemented by both a clinician and, subsequently, by a trained caregiver. Two dyads, each consisting of one individual with lexical retrieval impairment due to neurodegenerative disease and a caregiver, participated in the study. Participants initially received treatment administered by a graduate student clinician. Caregivers were subsequently trained, with clinician support and feedback, to administer the same lexical retrieval treatment in a second phase of intervention. Results indicated medium and large effect sizes for clinician- and caregiver-trained items. Participants' perceptions of treatment benefits and implications for future research are discussed.Item Lexical representations in children who stutter: evidence using a gating paradigm(2010-05) Hudson, Sarah Ann; Sheng, Li, Ph. D.; Byrd, Courtney T.This thesis investigated lexical representations of children who stutter (CWS) and children who do not stutter (CWNS) using a duration-blocked gating task. This thesis tested the hypothesis that children who stutter have underspecified phonological representations for words, are less sensitive to incremental and segmental information for lexical items, and therefore require more acoustic-phonetic information to activate words in their lexicon. Pilot data collected from fourteen children (ages 5;6 to 10;1): 7 CWS and 7 CWNS matched on age were included in this thesis. Results showed that children in both talker groups required relatively equal amounts of acoustic-phonetic information to identify target words. A regression model revealed that age in months predicted performance on the gating task for CWNS, but that age in months did not predict performance on the gating task for CWS suggesting a difference in the developmental maturity of lexical representations in CWS. Possible conclusions from these pilot data are presented along with recommendations for future research.