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Psyridou, Maria; Torppa, Minna; Tolvanen, Asko; Poikkeus, Anna-Maija; Lerkkanen, Marja-Kristiina; Koponen, Tuire – Developmental Psychology, 2023
The aim of the present study was to examine the kinds of developmental profiles of arithmetic fluency skills that can be identified across Grades 1-9 (ages 7-16) in a large Finnish sample (n = 2,518). The study also examined whether membership in the developmental profiles could be predicted using a comprehensive set of kindergarten-age factors,…
Descriptors: Profiles, Arithmetic, Mathematics Skills, Elementary School Students
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Butler, David C.; Miller, Leon K. – Developmental Psychology, 1979
Twenty-four elementary school children ranging in age from 7 to 10 years identified tachistoscopically presented arrays varying in length and degree of orthographic constraint. (Author/MP)
Descriptors: Academic Ability, Age Differences, Elementary Education, Elementary School Students