Frequencies and functions of vocalizations and gestures in the second year of life.

PLoS One · 2025 · PMC11717318 · PMID 39787082

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This tendency was reflected in a highly significant Age by Modality interaction (Wald χ 2 = 17.1, df = 2, p < .001) ) based on the GEE test of model effects, reflecting the fact that the difference between the rate of Conventional vocalizations and gestures grew dramatically from 13 to 20 months.

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