Poster C59, Sunday, March 26, 5:00 – 7:00 pm, Pacific Concourse
Bilingual aphasia: exploring the relationship between language control and lexical access
Desiree Sasunian1, Pia Etchegoin1, Kathryn Tidaback1, Kareem Darwiche1, Teresa Gray1; 1San Francisco State University
Bilinguals must control two languages (Green, 1998); however, the relationship between language control (LC) and lexical access (LA) is unclear. In bilingual adults with aphasia (BAA), deficits in LA may be confounded by the necessity to control two languages. The current study aims to examine these relationships in BAA. Preliminary data have been collected from 3 Spanish-English neurologically healthy bilingual adults (NHBA) and 3 Spanish-English BAA matched on age and education. We project to recruit 10 NHBA and 10 BAA. Participants completed two linguistic control tasks that included congruent and incongruent conditions, requiring inhibition of irrelevant information and tapped LC (linguistic-control task: LC-Task) or LA (semantic task: S-Task). Based on Gray and Kiran (2016), we expected both groups to exhibit the congruency-effect: faster/more accurate responses on congruent conditions relative to incongruent conditions. For each group and task, 2-way repeated-measures ANOVAs were performed to evaluate the effect of condition (congruent/incongruent) x language (Spanish/English) for RT and accuracy. Results are significant at p < .05. On the LC-Task for RT, NHBA and BAA within-subjects results revealed a significant main effect of congruency (NHBA: F = 16.03; BAA: F = 11.14). On the S-Task for accuracy, BAA within-subjects results revealed a main effect that was trending on significance (F = 5.78; p = .07). For RT, NHBA within subjects results revealed a main effect was trending on significance (F = 5.97, p = .07). Preliminary results suggest a possible association between LC and LA, suggesting that LC may influence LA.
Topic Area: LANGUAGE: Lexicon