1. Language Chapter 4.5 No 4.3 or 4.4 1

2. Behaviorist View Skinner basics: Learn language by imitation & reinforcement BaBa, Dada What might be a problem with behaviorist view?

3. Problems with Behaviorist View? 1. Natural variation in learning language Children make up own sentences Go there means: I want to get back into the stroller. Learn words 2. Not always reinforcement for new words Gain Infinite Generativity Produce endless number of meaningful sentences using finite set of words and rules

4. Noam Chomsky Chomsky's LAD hypothesis LAD Language Acquisition Device Humans prewired to learn language at certain time Able to detect various features & rules of language No physical structure Behaviorists opposed Reinforced for saying Mama

5. Interactionist View of Language Development Biology & environmental experiences Contribute to language development Which are? Children acquire native language without explicit teaching Worldwide children acquire language same time. Research Professionals spoke more to children than welfare recipients Professionals children Vocabularies twice as large Nature of Language and How it Develops in Infancy

6. Interactionist View Children learn language in specific contexts Father & baby book father points to bird son repeats word

7. 3 mo. old twin boys

8. Beginnings of Oral Communication Babies communicate by sounds & gestures Sequence of 1st year communication 1. Crying 2. Cooing 3. Babbling 4. Gestures

9. Beginnings of Oral Communication Babbling Begins about 2 mo.'s. Strings of consonant-vowel combinations, such as ba, ba, ba, ba Universal 6 mo.'s Babble sounds of language exposed Do not respond to sounds in other languages not commonly exposed to.

10. Beginnings of Oral Communication First Words Receptive vocabulary 5 mo.'s may recognize their name 13 mo.s understand 50 words

11. Beginnings of Oral Communication Holophrases One word for entire thought Cool Spoken vocabulary 9 mo.'s 1 year, holophrases Important objects & persons Dada Ball Doggie 11

12. http://www.youtube.com/watch?v=x6hxpzGHObc

13. Beginnings of Oral Communication Spoken vocabulary spurt 18 mo. old 50 100 words 2 yr. old 300 words

14. Beginnings of Oral Communication Telegraphic speech Economical use of words Read book Correct order of words Opposed to book read

15. Beginnings of Oral Communication Overextension Dada may mean all men Underextension Use a word too narrowly Boy may mean only boys his age 15