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dc.contributor.advisor Martin, Randi C.
dc.creatorCrowther, Jason Everett
dc.date.accessioned 2009-06-03T21:08:50Z
dc.date.available 2009-06-03T21:08:50Z
dc.date.issued 2007
dc.identifier.citation Crowther, Jason Everett. "Inhibition versus over-activation in word selection: Evidence from aphasia." (2007) Master’s Thesis, Rice University. https://hdl.handle.net/1911/20498.
dc.identifier.urihttps://hdl.handle.net/1911/20498
dc.description.abstract Two nonfluent aphasic patients, ML and AR, and two fluent aphasic patients, LC and LW, along with older controls were tested on tasks involving semantic blocking and lexical selection. In Experiment 1, a repeated picture-naming task manipulating semantic blocking and presentation rate, both nonfluent patients showed growing semantic interference across trials, while the other subjects did not. In Experiment 2, a corresponding comprehension task, ML showed increasing semantic interference while AR showed a lack of repetition priming. Experiment 3 was a category fluency task in which AR performed very poorly and ML performed similarly to the fluent patients. Experiment 4 was a sentence completion task, and no evidence was found that the number or relatedness of lexical competitors caused any difficulty for the nonfluent patients. It was concluded that ML suffers from deficient semantic inhibitory mechanism while AR suffers from an under-activation of lexical representations.
dc.format.extent 95 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCognitive psychology
dc.title Inhibition versus over-activation in word selection: Evidence from aphasia
dc.type Thesis
dc.type.material Text
thesis.degree.department Psychology
thesis.degree.discipline Social Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts


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