The Aphasiology Archive
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The „Tree Pruning Hypothesis“ for Broca’s Aphasia in Bilingual Individuals

Tissen, Andrea and Weber, Sandra and Günther, Thomas
The „Tree Pruning Hypothesis“ for Broca’s Aphasia in Bilingual Individuals. In Clinical Aphasiology Conference: Clinical Aphasiology Conference (2006 : 36th : Ghent, Belgium : May 29-June 2, 2006) / : (2006).

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Abstract

This study investigates the „tree pruning hypothesis“(TPH; Friedmann & Grodzinsky, 1997) in a bilingual individual with Broca’s aphasia. In Broca’s aphasia, one of the main symptoms is agrammatism. The TPH suggests that syntactic deficits are highly selective: tense inflection is impaired while agreement inflection is preserved. To explain this obvious performance dissociation, the TPH uses the “phrase marker split inflection tree” (Pollock, 1989). In this phrase marker, the functional category agreement (AgrP) is located below tense (TP). According to the TPH, in persons with moderate agrammatism, the “phrase marker split inflection tree” is pruned between the two categories AgrP and TP, which causes an impairment of TP and all categories above it while AgrP and all nodes below it stay intact.

EPrint Type:Clinical Aphasiology Paper
Subjects:UNSPECIFIED
ID Code:1708
Conference:Clinical Aphasiology Conference: Clinical Aphasiology Conference (2006 : 36th : Ghent, Belgium : May 29-June 2, 2006)
Additional Information:USED WITH PERMISSION.