2005/04/17 by Tai‐Li Chou, Tai-Li Chou, Ciao‐Han Wong +8 · 1 citation
Engineering · Neuroscience · Physics and Astronomy · Psychology · #Child and Animal Learning Development #Ionosphere and magnetosphere dynamics #Laser-induced spectroscopy and plasma #Neurobiology of Language and Bilingualism #Reading and Literacy Development #Solar and Space Plasma Dynamics
paper · doi:10.1016/j.bandl.2018.12.006
openalex publication_date 2005/04/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/24
Semantic knowledge has thematic relations of contiguity based on association and taxonomic relations of similarity based on shared features to form categories. It is unknown if there are distinct brain networks between thematic and taxonomic organizations in children and if this distinction is related to changes in specialized brain regions with age and/or skill. We orthogonally manipulated association strength (strong, weak) and categorical relatedness (high, low) to examine 10- to 14-year-old children over a two-year interval. Moreover, we examined whether initial behavioral performance predicted brain activation changes. Weak versus strong association strength produced greater activation over time in left middle temporal gyrus and inferior frontal gyrus, and initial accuracy predicted activation changes in the latter. Moreover, high versus low categorical relatedness produced greater activation over time in left occipito-temporal cortex and precuneus, and initial accuracy predicted activation changes in the latter. These developmental findings suggest different organization for thematic and taxonomic relations.