PSYCH 15 Lecture 3: LECTURE 3
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Individuals within a species have same genes but different alleles. These differences have major impacts and cause interindividual variability. All traits depend on genes and cellular environment (neural input as well) during development. Ca(cid:374)"t say if (cid:449)e ha(cid:448)e iq (cid:272)orrelatio(cid:374)s (cid:271)et(cid:449)ee(cid:374) (cid:271)io pare(cid:374)t & (cid:272)hild. Lean towards being genetically affected if we look at adoptive parents & child. Iq correlations between identical twins adopted by diff. Families: . 80 versus unrelated children reared together: . 38. Selective placement: if you"re goi(cid:374)g to adopt a kid (and yourself are educated) you tend to get kids from educated backgrounds and less educated families tend to adopt kids who come from less educated background. Correlation between bio and adoptive parents education is . 30 (hard to explain off the . 80 score) variation due to environmental variation. Total phenotypic variation= phenotypical variation due to genetic variation + phenotypic (cid:3045)(cid:3047)(cid:3042)(cid:3041) (cid:3031)(cid:3048)(cid:3032) (cid:3047)(cid:3042) (cid:3032)(cid:3041)(cid:3032)(cid:3046) (cid:3045)(cid:3047)(cid:3042)(cid:3041) (cid:3031)(cid:3048)(cid:3032) (cid:3047)(cid:3042) (cid:3032)(cid:3041)(cid:3032)(cid:3046) + (cid:3049)(cid:3045)(cid:3047)(cid:3042)(cid:3041) (cid:3031)(cid:3048)(cid:3032) (cid:3047)(cid:3042) (cid:3032)(cid:3041)(cid:3049)(cid:3045)(cid:3042)(cid:3041)(cid:3040)(cid:3032)(cid:3041)(cid:3047)
