Kate Kuzmina: Psykolingvistiske egenskaper og objektbenevning hos personer med afasi
På Forum for klinisk lingvistikk og språktilegnelse 6. juni vil postdoktor ved MultiLing Kate Kuzmina presentere sin forskning på sammenhengene mellom språkferdigheter, kognitiv kontroll og effektene av psykolingvistiske egenskaper på bildebasert benevning av objekter hos personer med afasi.
Denne forskninga skal presenteres i en postersesjon på the Nordic aphasia conference 2019 i Turku, Finland senere i juni, og det er denne posteren vi får en presentasjon av. Forumet holdes på engelsk, og er åpent for alle. Under følger et sammendrag.
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 effect 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.