Language development

speech perception

prosody: characteristic rhythmic pattersn

distinguish sounds that make a difference; 6-12 mos narrows

word segmentation: discover where words begin and end

prep for production

practice sounds and cries

babbling: sounds consonant and vowel; 7 mos

intersubjectivity and joint attention

turn taking

first words: 10-13 mos

holophrasic, leave out hard sounds, over and under extensions, non-words (add affixes inappropriately

adults stress new words, word games

productive vocab 18 mos

about 50 words; holophraisic

telegraphic speech 24 mos; learning grammar

leave out non-essential

private speech to organize own actions

preschool: can talk about past, produce narrative, converse with another