TB8 D&L Lecture 4; Developmental disorders

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  • Created by: mint75
  • Created on: 30-04-16 14:59

1. How does cognitive genetics explain the spatial cognitive deficits in WS?

  • Genes missing in WS also involved in anatomical development of dorsal stream pathways
  • WS individuals impaired in spatial cognition as dorsal stream develops unusually bc WS individual does not detect visuo-spatial properties
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2. What does neuroconstructivism emphasise?

  • The role of gene expression THROUGH developement. Early cognitive profile inferred from adult end state. Fractionation of strengths and weaknesses across domains,disregard of environment
  • The role of genes in coding cognitive abilities. Are specific cognitive modules selectively affected?

3. What does the local-processing bias hypothesis suggest about the nature of WS visual-spatial disorder?

  • WS have issues with the global form of objects but do not struggle with fine detail
  • WS have issues with the local features of objects but do not struggle with global arrangement

4. What is the main premise of the dorsal stream deficit hypothesis?

  • Structural abnormalities in dorsal stream of WS interact with intact ventral to contribute to visual-spatial deficits
  • Structural abnormalities in dorsal stream of WS contribute to visual-spatial deficits
  • Structural abnormalities in ventral stream of WS contribute to visual-spatial deficits
  • Structural abnormalities in ventral and dorsal stream of WS contribute to visual-spatial deficits

5. How does cognitive genetics explain WS?

  • The genes coding for language skills are intact, other developmental disorders are impaired on these genes.
  • The adult state of the language system may be mature but not 'intact'. Language is atypical in many ways, WS informs about the low level processes of language

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