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Phonation Stage (Birth - 1 month)
Speech like sound are rate and most vocalizations are reflexive (burping, crying)
Cooing or Gooing Stage (2-4 months)
Most productions are acoustically similiar to /u/
Expansion Stage (4-6 months)
- Infant is "playing" with speech mechanism, exploring his/her capabilities through growls, squeals, yells, raspberries
- Some C-V combinations may be produced
Canonical or Reduplicated Babbling Stage (6-8 months)
Infant is producing strings of CV syllables, although infant does not have sound meaning correspondence
By 8 months, hearing impaied children fall behind their peers in development
Variegated or Nonreduplicated Babbling Stage (8 months-1 year)
Infant continues to use adult-like syllables in CV sequences
Transition from prelingusitic to linguistic stage...
Begins around 1 year of age