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Peer reviewedCasey, M. Beth – Developmental Psychology, 1984
Evaluates preschoolers' ability to distinguish left-right mirror-images of objects on a memory task and ability to name rows of objects on a page in a consistent lateral direction. Abilities were assessed first without specific instructions on the relevance of left-right information and then with instructions. (Author/AS)
Descriptors: Age Differences, Individual Differences, Memory, Perceptual Development
Peer reviewedTrick, Lana M.; And Others – Developmental Psychology, 1996
Ninety-eight participants from 5 age groups with mean ages of 6, 8, 10, 22, and 72 years were tested in a series of speeded number discriminations. Found that response time slope as a function of number size decreased with age for numbers in the 1-4 range. (MDM)
Descriptors: Age Differences, Attention, Children, Mathematics Tests
