What is dr. william sheldon?

Dr. William Sheldon (1898-1977) was an American psychologist and physician who was best known for his theory of constitutional psychology. This theory proposed that a person's physical appearance and body type are connected to their personality and temperament. Sheldon classified human body types into three categories: ectomorphs (thin and slender), endomorphs (rounded and soft), and mesomorphs (muscular and athletic).

Sheldon's research on constitutional psychology was controversial and criticized by some scholars for its lack of empirical evidence. However, his work has been influential in fields such as sports psychology, body image research, and personality psychology. Sheldon also made contributions to the study of somatotyping, which involves categorizing people's body types into different groups.

Apart from his work in psychology, Sheldon was also a physician and served as a professor at various universities throughout his career. He wrote several books on his theories and research, including "The Varieties of Human Physique" and "The Atlas of Men: A Guide to Somatotyping the Adult Male at All Ages".