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Heredity - Coggle Diagram

- - - - fraternal & identical twins
        
        normally develop under similar environmental conditions
        
        identical twins
        
        share more genetic kinship
    - - similar in intelligence
        
        fraternal twins similar
        
        noticeably less similar
    - - identical twins
        
        display greater similarity in IQ
  - - - adopted children & biological parents
  - - - estimate of the proportion of trait variability in population that is determined by variations in genetic inheritance
    - - group statistics based on studies
        
        specific group
        
        cannot apply meaningfully to indiv.
      - heritability
        
        fluctuate
        
        ↑ with age
      - can vary
        
        depending on variety of factors
        
        notably lower
        
        samples drawn from lower SES
        
        suppressed
        
        negative environmental conditions
        
        1 more item...
- - - - show resemblance
        
        foster parents in IQ
        
        foster parents shape their environment
    - - more similar in IQ
    - - raised same home
        
        significant resemblance
        
        environment influence intelligence
  - - - poverty & understaffed orphanages
        
        environmental deprivation
        
        predicted decline in IQ
    - - more conducive
        
        benefit from environmental enrichment
        
        adopted children
        
        scored notably higher
        
        gains reduced
        
        suffered severe, lengthy deprivation
    - - ↑ IQ scores
        
        sensitive to environmental influences
  - - - attributed to environmental factors
- - - - genetically determined limits on IQ
        
        high quality environment
        
        promote development of intelligence
        
        score near the top of IQ range
      - explains high IQ can come from poor environment
- - - - heredity
        
        genetic in origin
        
        genetic factors
        
        strongly implicated
        
        cause of ethnic differences in intelligence