stages of language development

Cooing stage:

• 0-1 month 
  • eat, sleep, cry
• 1-4 months 
  • intonational patterns

Babbaling stage:

• 5-12 months
  • making sounds in a certian enviroment
  • internal behaviours
• 6-9 months
  • different select sounds 

1 YEAR

• emergence of first word
  • sounds relate to meanings
    • own action or desire action
    • sounds convey meanings 
    • use of nouns
    • one word sentances

'Fis' phomonon

• perception of phonemes occurs earlier than the ability to produce those phonemes

2 YEARS

• 2 words, different combonation of word order
• Three interpretations
  • subject-verb (Molly go)
  • verb-modifier (push truck)
  • possesor-possesion (mummy sock)

• words lack morphological and syntactical markers

Telegraphic stage

• 2-5 word sentances

• morthological overextension
  • use of simple prepositions 
  • inflectional morphemes appear
  • more complex syntax 

Post-telegraphic stage

• 36 months onwards
  • Sentences with multiple clauses and grammar used in more complex ways, can sustain conversation