Name and describe stages of speech sound development during the first year of life

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Newborns produce vegetative sounds and occur as a result of activities for sustaining life. This includes sucking, crying, and swallowing sounds. From 2 to 3 months, the infant starts to produce velar-like consonants and additional vowellike sounds at the back of the mouth. At 4 to 6 months, the infant begins producing consonant-like sounds together with vowel-like sounds to produce longer strings of sounds. This is known as marginal babbling. From 7 to 10 months, the infant produces canonical babbling, which resemble the sounds of the language. The infant also begins to combine sounds and repeatedly produces the sounds in non-varying repetitions often referred to as reduplicated babbling. Finally, from I I to 12 months, the infant is experimenting with sound productions by combining vowels with consonants, combining consonants with vowels and consonants, and producing a variety of sound combinations. This is known as variegated babbling.

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