No abstract available
MeSH terms
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Arousal
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Child Development*
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Concept Formation
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Conditioning, Operant
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Environment
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Exploratory Behavior
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Feedback
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Generalization, Psychological
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Humans
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Imitative Behavior
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Infant
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Infant, Newborn
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Locomotion
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Motor Activity
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Motor Skills*
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Play and Playthings
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Problem Solving
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Reinforcement, Psychology