Different Theories
Cesare Lombroso (1876) believed that criminal behaviour was inborn, and that their lawless nature was accompanied by certain physical characteristics. He believed criminals displayed asymmetrical faces, large and slanted eyes, a huge jaw, fat lips and high cheekbones.
William H Sheldon (1949) believed that there were three basic body types; endomorphic (round and soft), ectomoprhic (thin and fragile), and mesomorphic (muscular and hard). Those with the mesomorphic body type were apparently more likely to display criminal tendencies.