The Developmental Progression of Manipulative Play in the First Two Years.

FENSON, LARHY; KACAN, JEROME; KEAHSLEY, RICHARD B.; and ZELAZO, PHILIP R. The Developmental Progression of Manipulative Play in the First Two Years. CHILD DEVELOPMENT, 1976, 47, 232-236. Age differences in play were examined cross-sectionally at 7, 9, 13, and 20 months. Play at 7 months veas characterized by close visual and tactual examination of single objects, accompanied by mouthing. 13-month-olds showed more interest in physical and functional relations among dimensions of the toys, a trend that was discernible at 9 months. The emergence, during the last quarter of the first year, of the ability to relate 2 objects signals an important advance in cognitive functioning. Relational play precedes symbolic play developmentally.

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