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...careful study because environmental factors may be correlated with genetic factors. ..., IQ, and the search for statistical signals associated with so-called "X"-factors: environments, racism, and the "hereditarian hypothesis"". ''Biology & Phil ...

...ping. The result was that gender, as well as ethnicity, emerged as primary factors of group membership. ...ony but fails to address the possible existence of age-related confounding factors: On one hand, as an individual grows older and encounters more members of ...

...which degree the success is best attributed to genetic or to environmental factors.<ref name="PBS">{{cite web |url=https://www.pbs.org/race/000_About/002_04-b ...aits]] that are acquired through [[heredity|genetic]] and/or environmental factors that allow them to excel over other [[Race (classification of human beings) ...