Dr. William H. Sheldon

Dr. William H. Sheldon was an American psychologist who developed the somatotype theory, which classifies human body types into three categories: ectomorph (lean and tall), mesomorph (muscular and athletic), and endomorph (rounder and soft). He believed these body types could influence personality traits, although this link remains controversial. Sheldon’s work aimed to understand how physical characteristics relate to behavior, and he used photographs and measurements to classify individuals. His theories have influenced fields like personality psychology and physical anthropology, but they are considered outdated by many modern scientists.