1. Piaget: Believed we learn from interaction with peers and environment
2. Preconventional: All about me
3. Conventional: All about rules or laws
4. Postconventional: All about others
5. Kohlberg: Stages of Moral Development- Preconventional,
Conventional, Post- conventional
6. Chomsky: Theory of Universal Grammar- Innate/Biological
7. Babbling- 6 to 8 months: Consonant-vowel combinations (ba-ba, ma-
ma)
8. Holophrastic- 9 to 18 months: Single words represent a sentence (up,
juice, mine)
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, 9. Two-Word- 18 to 24 months: Mini sentences (doggy bark, me play)
10.Telegraphic- 24 to 30 months: Vocabulary increases. Use mostly
nouns and verbs, omits auxiliary words (Carrie want ball, I good boy
today)- early multiword stage
11.Later multiword stage- 30+ months: 5+ word sentences, fastest
vocabulary increase. Sentences formed with improving grammar,
structure
12.Skinner: Operant conditioning and language development- children
learn lan- guage based on reinforcement
13.Operant Conditioning and Language Development: Children learn
language based on reinforcement, learn language through imitating,
prompting, shaping, they associate words with meanings, correct
utterances are positively reinforced- Skinner
14.Vygotsky: Social approach to language development
15.Social Approach to Language Development: language develops
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