Cooling stage
This occurs as early as 6 weeks and during this stage infants will begin to spontaneously make cooling sounds such as "aaaaa" and "oooo" at this stage children are learning to make sounds by manipulating their tongues, mouths and breathing. this behaviour happens when a child is alone and clearly indicates the child is experimenting with making sounds. At 8-20 weeks phonology allows the child to improve his/her voice control.
Babbling stage
Babbling is a stage in child development in which an infant is experimenting with different utterings to articulate sounds but without any recognized words. Babbling begins shortly after birth and progresses as the infant gets older. They would begin to produce recognizable words after about 12 months though babbling may continue after that. there are 2 types of babbling , reduplicated babbling and variegated babbling.
Verbal scribbling
vocal play is the main event in the 20-30 week period. babies play with their voices changing pitch, loudness, rate and quality. as the baby discovers she/he can blow air through their lips you may hear raspberries and wet trills. Varied vowel like and consonant sounds including nasal sounds like mmm and nnn and fricatives fff are produced. the child also produces a range of sounds such as glides- low to high pitch and vice versa, to practice a variety of sounds. toward the end of the stage noises of consonants and sounds sound like they are together.
Melodic utterance stage
This stage occurs at 9-18 months and is the 4th stage of child language acquisition and is when the child starts to develop their skills in intonation, melody and rhythm. the child begins to understand the meaning of what theyre saying, however as they cannot properly talk they are often misunderstood by their parents, which fustrates the child.
Lexical and grammatical development
Stage 1: holophrastic
this occurs during the 12-18 month age range and the child utters their first word. they can build a vocabulary of holophrases- which can reach around 50 words. they are holophrases and not words because they convey all the meaning of a phrase/ sentence through language intonation and volume
stage 2: two word
this occurs at around 18 months and the child begins to use two words at a time. this can also be referred to