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Kate Kuzmina: Predictors of object naming in aphasia

At the Forum for clinical linguistics and language acquisition June 6, MultiLing postdoc Kate Kuzmina will present her research on cognitive control and language ability effects of psycholinguistic variables on object naming among persons with aphasia.

This research will be presented as a poster at the Nordic aphasia conference 2019 in Turku, Finland later in June. Below is an abstract of the presentation, which will be given in English, and is open to everyone.

Predictors of object naming in aphasia: Do cognitive control and language ability mediate effects of  psycholinguistic variables?

Previous studies have shown that several psycholinguistic variables affect picture naming in persons with aphasia (PWA). For example, earlier acquired words stay better preserved compared to later learned ones (for review see Brysbaert & Ellis, 2016). Also, it has been argued that naming objects with lower name agreement requires inhibition of alternative names (Alario et al., 2004), and therefore puts demands on cognitive control. Bose and Schafer (2017) showed that although both PWA and healthy controls performed better at naming words with high naming agreement, the difference between the naming conditions was significantly greater for PWA. This could be due to reduced ability to inhibit irrelevant information in PWA.

To the best of our knowledge, there are no studies investigating whether cognitive control mediates effects of psycholinguistic variables on the accuracy of object naming in aphasia. The present study aims to shed light on this problem. 31 right handed, native Russian speakers with preserved visual and hearing abilities diagnosed with  mild to moderate post-stroke aphasia aged from 44 to 70 yr (M = 60.7, SD = 7.0), 32% female were recruited from the Center for Speech Pathology and Neurorehabilitation in Moscow.

All participants were tested with a picture naming task including 247 colorized object pictures (Rossion & Pourtois, 2004) where they were instructed to name pictures appearing in the center of a screen as fast and as accurately as possible. Accuracy of responses was coded based on the normative data for Russian speakers (Tsaparina, Bonin, & Meot, 2011). Cognitive control was measured with the nonverbal Flanker task and two tasks from the Rus-BCoS, namely Auditory Attention and Rule Finding tasks. Language performance was measured with a general language assessment battery. At the talk, I will present preliminary results from the analysis.

Published May 27, 2019 11:05 AM - Last modified Nov. 25, 2020 2:53 PM