What are the stages of acquisition?
What are the stages AND age ranges of acquisition?
Age range of pre-verbal stage
0-3 months
Age range of babbling stage
3-12 months
Age range of one-word stage
12-18 months
Age range of two-word stage
1-2 years
Age range of multi-word stage
2-3 years
Age range of later multi-word stage
3-4 years
Two theories of CLA
Theory of Universal Grammar - who is the theorist?
Noam Chomsky
Usage-based theory - who is the theorist?
Michael Tomasello
Poverty of stimulus
child’s knowledge of language can NOT be learnt from caregivers or experience in immediate environment alone
Key points of Universal Grammar
Problems with Universal Grammar
Key points of Usage-based Theory
Key features pre-verbal stage
Key features babbling stage
Key features one-word stage
Key features two-word stage
Key features multi-word stage
Key features later-multi-word stage
Common sound change process in CLA
Reasons for sound change
Rough order for sound acquisition