ABSTRACT
Our ideas concerning racial groups come from a common belief that certain physical characteristics are linked with distinct psychic traits. We follow exactly the same course in discriminating, in the animal world, between a cat and a tiger. We think that among human races, just as among different animal groups, physically differentiated races tend to respond differently to outside stimuli, such as climatic, social, and other forces, and conversely that physically similar groups tend to respond similarly to such stimuli. Of these multifarious and measurable tendencies, one should be the readiness of a racial group to commit crime. It must be, so we think, rather simple to read these tendencies from compiled criminal statistics.
