The Inheritance of Personality and Ability: Research Methods and Findings

ability action actually additive adoptive analysis approach assortive mating assumption average behavior calculation called Cattell chapter child coefficient common compared concrete consider constellations contribution corrected correlation cultural curve determined deviation discussed dominance earlier effect environment environmental equal equations error estimate evidence example exist experience factor Figure follows fraternal gene genetic genothreptic give given groups heritability higher human identical independent indicated individual influences inheritance intelligence interaction latter learning least less limited lower MAVA mean measures method nature observed obtained OSES parents particular path pattern personality phenotypic population possible present primary probably produce psychological purely reared relation relative samples scores separate sibs significant social solutions structure studies suggests Table tests theory threptic tion traits twin twin method values variance within-family