Many mental traits, aptitudes, or proclivities, on the other hand, which reappear persistently in successive populations may be derived from an entirely different source.
Essentially, genes provide proclivities and potentialities continuously involving feedback mechanisms with the environment throughout life, but especially during prenatal and early childhood.
A strong proclivity among these new residents to homeownership and block associations helped the neighborhood survive the economic and social distress of the 1970s.