Frank Sulloway

Frank Jones Sulloway (born February 2, 1947) is an American psychologist and historian of science. He is a visiting scholar at the Institute of Personality and Social Research at the University of California, Berkeley and a visiting professor in the Department of Psychology. After finishing secondary school at Moses Brown School in Providence, Rhode Island, Sulloway studied at Harvard College and later earned a PhD in the history of science at Harvard. He was a visiting scholar at the Massachusetts Institute of Technology.

He is known for his books, Freud, Biologist of the Mind (1979), which placed Freud and psychoanalysis in their historical and scientific contexts, and Born to Rebel (1996), which argued that birth order exerts large effects on personality. In Born to Rebel, Sulloway claimed that birth order had powerful effects on the Big Five personality traits. He argued that firstborns are more conscientious and socially dominant, less agreeable, and less open to new ideas than are laterborns, who were "born to rebel". Sulloway showed that "[l]aterborn scientists were more likely to support revolutions in science. For example, of scientists prominent in the controversy over Darwinism between 1859 and 1875, laterborns were 4.6 times more likely than firstborns to be supporters rather than opponents of Darwinism".

However, critics such as Fred Townsend, Toni Falbo, and Judith Rich Harris, dispute Sulloway's theories.