PSYCH320 Lecture Notes - Lecture 3: Developmental Coordination Disorder, Heredity, Down Syndrome
20 Feb 2015
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Document Summary
Nature vs nuture behaviour genetic approach variation in rate of language development, look at the contribution of heredity to this variation examine twins environment vs. genetics. Ke familiy deficit syntactic rules for tense, numbers, genders, etc. Attempted to find language gene found poor articulation, orofacial dyspraxia lower iq in affaceted. Gene codes for proteins, develops brain/lung, affects song learning for songbirds, affects other genes, but multiple genes are involved. Sli specific language impairment li in absence of other impairments. Normal iq and deficits, just low in production and comprehension 1-5% prevalence, and runs in families. Late onset speech, deficit in morphology but not in syntax (asynchronous, not normal) Ws williams syndrome missing material on chromo-7, iq 40-70, talkative, can"t solve cognitive problems, problem with visual spatial abilities. Picture tasks cant draw shit (bikes, elep) problems with mental representations. Language development know advanced words, good word definitions. Double dissociation sli bad grammar and good intelligence.
