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- W2898517544 abstract "Although research shows that working memory improves during early childhood, it remains unclear how the fronto-parietal network of cortical regions, known to support this ability in adults, relates to changes in young children. Measures of cortical thickness may be useful in investigating this association as they reflect age-related differences in gray matter and have been proposed to support age-related improvements in other cognitive abilities, but have only sparingly been tested empirically in early childhood. The present study sought to investigate relations between cortical thickness and performance on a digit span task in 200 4- to 8-year-old children using both a priori defined regions of interest related to working memory (superior frontal cortex, middle frontal cortex, anterior cingulate cortex, superior parietal cortex) and whole brain analyses. Results indicated a significant association between cortical thickness in each a priori defined fronto-parietal region and performance on digit span, such that those with a thinner cortex recalled more items than those with a thicker cortex. Similar regions emerged from the whole brain analyses, as did several other regions not typically included in the fronto-parietal network. Results of a mediation analysis indicated that age-related differences in behavior were partially explained by variations in thickness of anterior cingulate cortex, suggesting a potentially important role for this structure during early childhood. Overall, these results suggest that in children as young as 4 years of age there are associations between working memory abilities and thickness in cortical areas known to support working memory in adults." @default.
- W2898517544 created "2018-11-02" @default.
- W2898517544 creator A5011612123 @default.
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- W2898517544 date "2018-12-01" @default.
- W2898517544 modified "2023-10-17" @default.
- W2898517544 title "When less is more: Thinner fronto-parietal cortices are associated with better forward digit span performance during early childhood" @default.
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- W2898517544 doi "https://doi.org/10.1016/j.neuropsychologia.2018.10.020" @default.
- W2898517544 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6289754" @default.
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