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The Development of Truth-Functional Language: 1 1/2 - 3 Years.
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Pea, Roy D. – 1977
This study of language development was intended to chart the developmental course of the spontaneous use of negatives and affirmatives by 1 1/2 - 3-year-olds in response to true or false statements concerning familiar objects, properties, and actions. Forty children, 18, 24, 30, and 36 months of age, were assessed for knowledge of the words used…
Descriptors: Child Language, Cognitive Development, Comprehension, Infant Behavior