ABSTRACT
Man is unique, but many of his parts and most of his basic processes are not. The growth and functioning of these are determined by his biological inheritance—an inheritance that goes back well, makes him kin in greater or less degree to every creature that ever lived, and lays down certain inviolable rules of development and behavior. If human social behavior is part of their biological inheritance, child psychologists could attempt social therapy analogous to the medical therapy that is brought to bear on genetic diseases. The cortisone therapy that brings physical growth back into line does not reduce the Intelligence quotient. At the cellular level, however, the behavioral consequences of certain gene defects have been well documented. There are a number of inherited diseases characterized by broken links in gene-controlled sequences of metabolic reactions, breakages which allow toxic substances to build up in the body.
