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Tracking what went where across toddlerhood: Feature-location bound object representations in 2- to 3-year-olds'
Melissa M Kibbe1, Jessica B Applin2
1Department of Psychological & Brain Sciences, Center for Systems Neuroscience, Boston University, Boston, Massachusetts, USA.
Abstract:
Two experiments examined the development of the ability to encode, maintain, and update integrated representations of occluded objects' locations and featural identities in working memory across toddlerhood. Sixty-eight 28- to 40-month-old US toddlers (13 Asian or Pacific Islander, 6 Black, 48 White, 1 multiracial; 40 girls; tested between February 2015 and July 2017) tracked the locations of different color beads that were hidden simultaneously (Experiment 1) or sequentially (Experiment 2). Toddlers' ability to reliably store feature-location bound object representations in working memory varied as a function of age, memory load, and task demands. These results bridge a developmental gap between infancy and early childhood and provide new insights into sources of limitation and developmental change in children's early object representational capacities.
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