The importance of executive function (EF) in social, emotional, academic and career domains is well established. The goal of the proposed research is to investigate the association between language and EF abilities in school-age children with typical and atypical development. There are two separate lines of research that provide empirical support for the existence of a relationship between language and EF. First, research on bilingualism suggests that experience with two languages facilitates EF skills. Second, the disabilities literature has focused on whether dysfunction in executive control may be one of the factors underlying deficits associated with Specific Language Impairment (SLI) and Autism Spectrum Disorders (ASD). In both accounts, there is some conflicting evidence and both approaches are underspecified in terms of the particular components of EF and specific language functions that may be linked. The proposed project will bridge the bilingualism and the disorders literatures by examining the relationship between language and executive function in typically-developing bilingual and monolingual children, children with SLI, and children with ASD. The theoretical motivation for exploring the relationship between language and EF stems from a leading developmental theory of executive control proposed by Zelazo and colleagues. By investigating EF performance across groups with varying language abilities we aim to test a critical assumption of this model related to the use of language to manage executive control. A total of 160 children (40 per group) will participate in four studies designed to address the following three specific aims: 1) Compare the performance of bilingual, monolingual, SLI, and ASD groups matched on age and nonverbal cognition on a range of EF measures;2) Examine the concurrent and longitudinal relationship between specific components of EF and language knowledge, processing, and learning across the groups;and 3) Directly assess the role of verbal mediation in EF across these groups with typical and atypical language abilities. The proposed project represents an innovative approach to establishing a comprehensive conceptual framework that spans the extent of individual variation from enhanced abilities in language/EF to impairments in language/EF. Findings from this project also have potential implications for targeted interventions for children with language disorders.
The goal of the proposed project is to examine the association between language and executive function - defined as the cognitive processes that underlie goal-directed behavior - in school-age children with typical and atypical development. Executive function is critical for learning and academic achievement, self- regulation, and social competence. This research will provide insights into how children's linguistic skills relate to ther executive function abilities by examining a wide range of individual variation in language ability, including bilingual and monolingual children with typical development, children with Specific Language Impairment (SLI), and children with Autism Spectrum Disorders (ASD). Results from this project will further our understanding of the nature of SLI and ASD and could have implications for targeted interventions with these populations.
|Buac, Milijana; Gross, Megan; Kaushanskaya, Margarita (2016) Predictors of processing-based task performance in bilingual and monolingual children. J Commun Disord 62:12-29|
|Gangopadhyay, Ishanti; Davidson, Meghan M; Ellis Weismer, Susan et al. (2016) The role of nonverbal working memory in morphosyntactic processing by school-aged monolingual and bilingual children. J Exp Child Psychol 142:171-94|
|Yoo, Jeewon; Kaushanskaya, Margarita (2016) Serial-position effects on a free-recall task in bilinguals. Memory 24:409-22|
|Kaushanskaya, Margarita; Smith, Samantha (2016) Do grammatical-gender distinctions learned in the second language influence native-language lexical processing? Int J Billing 20:30-39|
|Gross, Megan; Kaushanskaya, Margarita (2015) Voluntary language switching in English-Spanish bilingual children. J Cogn Psychol (Hove) 27:992-1013|
|Haebig, Eileen; Kaushanskaya, Margarita; Ellis Weismer, Susan (2015) Lexical Processing in School-Age Children with Autism Spectrum Disorder and Children with Specific Language Impairment: The Role of Semantics. J Autism Dev Disord 45:4109-23|
|Gross, Megan; Buac, Milijana; Kaushanskaya, Margarita (2014) Conceptual scoring of receptive and expressive vocabulary measures in simultaneous and sequential bilingual children. Am J Speech Lang Pathol 23:574-86|
|Buac, Milijana; Kaushanskaya, Margarita (2014) The relationship between linguistic and non-linguistic cognitive control skills in bilingual children from low socio-economic backgrounds. Front Psychol 5:1098|
|Buac, Milijana; Gross, Megan; Kaushanskaya, Margarita (2014) The role of primary caregiver vocabulary knowledge in the development of bilingual children's vocabulary skills. J Speech Lang Hear Res 57:1804-16|
|Kaushanskaya, Margarita; Gross, Megan; Buac, Milijana (2014) Effects of classroom bilingualism on task-shifting, verbal memory, and word learning in children. Dev Sci 17:564-83|
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