First degree murderers are excessively divorced and widowed, laborers, and poorly educated. They also have straight hair. Second degree murderers are less extreme. They have excessively golden hair and broad nasal bridges. Assault offenders have a high percentage of divorced men, of men skilled in trade labor and personal service, and have excessively olive skin color.
Robbers are mostly unmarried and factory workers.
Rapists are largely divorced men and widowers. Arsonists are deficient in single men and typically have ash-blonde hair. Hooton also used this data to classify criminals by individual body type, or somatotype. Short-slender individuals were thought to be more prone to burglary and larceny and having been previously convicted. These results led Hooton to believe that the physical inferiority of the criminal was the underlying cause of deviant behavior.