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At 4 to 5 months, infants exhibit significant vocalization development. They begin to laugh, showcasing joy and pleasure. Expressing eagerness through vocal sounds, they demonstrate anticipation and engagement. When play is interrupted, infants often cry, indicating their need for continued interaction and stimulation. This vocalization is crucial for emotional expression and communication development during this early stage of life, laying the groundwork for future language skills.
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Language Development Cont. (ISCI) 4-5 mos.Vocalizes laughter Vocalizes eagerness Cries if play disrupted Vocalizes feelings of pleasure