PSY 202 Lecture Notes - Lecture 2: Asian Canadians, Asian Americans, Posttraumatic Stress Disorder
25 Apr 2021
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Genetic and environmental influences on iq (section 9. 3) The heroic moment for the iq test: Lead -> sick, but only high doses problematic (60mcg/deciliter) For every 10mcg/deciliter increase in lead -> iq score falls 4 points. Government regulations based on this finding (gasoline, paint) Learning objectives: define heritability, explain how genetic influences on iq can be determined from family, twin, and adoption studies. 3: describe and explain the reasons for the flynn effect. Heritability- how much is variation in a trait due to genetic contribution. Is does not mean it"s only due to genus but due to genetic causes. Iqs are more similar to the more closely related family members are. Biological siblings reared together have more similar iqs than adopted siblings reared together. Identical twins show more similar genetics than fraternal twins. Correlation of iq between identical twins vs. fraternal twin. Fraternal have +. 60 correlation and identical twins have +. 86 correlation.
