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Social Studies, 12.02.2020 04:09 riri95

Sherri grasps for her rattle at 3 months of age but cannot quite get hold of it. However, by 11 months Sherri is holding and moving the rattle with total control. Which developmental principle does Sherri's behavior illustrate?A. the principle of hierarchical integration
B. the proximodistal principle
C. the cephalocaudal principle
D. the principle of the independence of systems

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Sherri grasps for her rattle at 3 months of age but cannot quite get hold of it. However, by 11 mont...
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