Chapter 5

Language development
   Behaviorists: language due to reinforcement of word-like sounds
   Nativists: children make rule-governed grammatical errors; have language acquisition device
   Interactionists: We're genetically prepared to learn language but we need to be exposed to it

   All babies coo (vowel sounds at 2 months) and babble (consonant sounds): maturational process

   At 6 months, start losing ability to discriminate between sounds not heard in native language
      Bilingualism: start early
         Benefits: Has no impact on maturational processes
                       Learning grammatical rules in other language is easier
                       Greater metalinguistic abilities
                       Greater ability to focus attention on language tasks
         Drawbacks: Reach some milestones later as has to differentiate between the languages
                              One parent should always speak the same language around baby
                           Most children don't attain fluency in both languages
                              May increase risks for learning disabilities

   Child-directed speech is important for kids to pay attention

   First words at 1 year old; refer to important, active objects
      Underextension: one name for each thing
      Overextension: same name for similar things
      Comprehension develops ahead of speech production
      Importance of turn-taking games

   Telegraphic speech between 12-18 months: 2-word sentences

   Naming explosion between 16-24 months