Chi-Lin Yu leads a project, along with a team from the Kovelman developmental neuroscience lab, that uses fNIRS imaging to identify neural signatures of social and language processing in school-aged children during a naturalistic listening task. The results contribute to a growing body of research that is disentangling social theory-of-mind processing from other aspects of language comprehension and extends previous work to a more ecologically valid setting.
Yu, C.-L., Eggleston, R. L., Zhang, K., Nickerson, N., Sun, X., Marks, R. A., Hu, X., Brennan, J.R., Wellman, H., & Kovelman, I. (2025). Neural Processing of Children’s Theory of Mind in a Naturalistic Story-Listening Paradigm. Social Cognitive and Affective Neuroscience.
Abstract
Diverse evidence supports the theory that bilingual language users have language-invariant representations of concepts and grammatical forms such as argument structure. Here we extend that work to test the representation of morphosyntactic features and lexical concepts in typologically different languages. Specifically, we deploy machine learning techniques with EEG data collected from eighteen Korean-English bilinguals while they read singular and plural nouns and present and past tense verbs in English and Korean. Whereas event-related potentials (ERPs) analyses show limited sensitivity to discriminate lexical, number, and tense information, neural decoding revealed robust within-language classification of lexical and morphosyntactic information in both languages. In contrast, between-languages decoding was possible only for number information; decoding of lexical items and tense did not generalize between the two languages, even when accounting for temporal differences. These results indicate stable within-language EEG representations for lexical items and morphosyntactic features but suggest that only the number feature show evidence for shared EEG response patterns between the two languages studied.