Kai Theodor Erikson (born February 12, 1931) is an American sociologist, noted as an authority on the social consequences of catastrophic events. He served as the 76th president of the American Sociological Association.
Erikson was born in Vienna, the son of Joan Erikson (née Serson), a Canadian-born artist, dancer, and writer, and Erik Erikson, a German-born famed psychologist and sociologist. His maternal grandfather was an Episcopalian minister, and Erikson was raised a Protestant. Erikson graduated from The Putney School in Vermont, Reed College in Oregon and earned a PhD at the University of Chicago during which he joined the faculty of the University of Pittsburgh in 1959 where he held a joint appointment at the School of Medicine and in the Department of Sociology. In 1963 he moved to Emory University, and followed that with a move to Yale University in 1966. He now holds the title of William R. Kenan, Jr. Professor Emeritus of Sociology and American Studies. He edited the Yale Review from 1979 to 1989.
Erikson first attracted professional attention with his book, Wayward Puritans: A Study in the Sociology of Deviance, published in 1966 and based on his doctoral dissertation. An early attempt to understand the social framework of Puritan life that led to the Salem witch trials in the late 17th century, the book has been followed by a variety of related historical and sociological studies.