anguage-related areas of the raIn Broca aphasics Wernicke aphasics nonfluent fluent(logorrheic ° agrammatica impaired meanings morphemeless neologisms unimpaired severely impaired comprehension comprehension
Language-related areas of the brain Broca aphasics: • nonfluent • agrammatical • morphemeless • unimpaired comprehension Wernicke aphasics: • fluent (logorrheic) • impaired meanings • neologisms • severely impaired comprehension
Language-related areas of the brain spatial: lateral distribution detectable in lesions PET fMRi scans temporal: brain plasticity performance patterns physiological changes during L1 acquIsItion learnability constraints
Language-related areas of the brain • spatial: lateral distribution - detectable in lesions - PET, fMRI scans • temporal: brain plasticity - performance patterns - physiological changes during L1 acquisition - learnability constraints
The paradox of psycholinguistics L1 acquisition enables children to produce virtually infinite amounts of linguistic data Input includes distorted input(also: deviant input; Chomsky) can be: mispronounciations slips of the tongue omitted rules inference of rules out of defective material negative evidence pointing at errors typical errors in L1: *goed atypical errors: * no like syntax
The paradox of psycholinguistics L1 acquisition enables children to produce virtually infinite amounts of linguistic data. Input includes: • distorted input (also: deviant input; Chomsky) can be: mispronounciations, slips of the tongue • omitted rules inference of rules out of defective material • negative evidence = pointing at errors typical errors in L1: *go-ed atypical errors: *I no like syntax
The paradox of psycholinguistics phases in L1 acquisition single-word stage at 12 months: first recognizable words until 18 months: vocabulary increase 3 words/month(apple, up.) no evidence of grammar acquisition no inflection(plural-S, past-ed
The paradox of psycholinguistics phases in L1 acquisition single-word stage: • at 12 months: first recognizable words • until 18 months: vocabulary increase • 3 words/month (apple, up...) • no evidence of grammar acquisition • no inflection (plural-s, past-ed)
The paradox of psycholinguistics phases in L1 acquisition after 1 8 months acquisition of grammar begins productive use of inflections elementary 2-3 word utterances after 30 months acquisition of most inflections core grammatical constructions adultlike, multiword speech
The paradox of psycholinguistics phases in L1 acquisition after 18 months: • acquisition of grammar begins • productive use of inflections • elementary 2-3 word utterances after 30 months: • acquisition of most inflections • core grammatical constructions • adultlike, multiword speech