ABSTRACT
IT is well to re-emphasize that the current study of family environment and delinquency was initially designed as part of a two-pronged work, of which Physique and Delinquency was the first. There we were concerned with ascertaining: (a) which among 67 traits could be regarded as essentially ‘constitutional’ by reason of statistically significant variation in their incidence among nondelinquent boys of the four dominant body types—mesomorphic, endomorphic, ectomorphic and balanced; and (b) the differences in the delinquency potential of the four physique types.1
