Jeffrey Masson

Jeffrey Moussaieff Masson (born March 28, 1941 as Jeffrey Lloyd Masson) is a psychotherapist and historian of psychotherapy who wrote a controversial book, The Assault on Truth: Freud's Suppression of the Seduction Theory, about Austrian neurologist Sigmund Freud. In the book, Masson accuses Freud of hiding evidence that some patients were sexually abused by their parents.

Masson was research director of the Sigmund Freud Archives in New York City. He was removed from the job after saying Freud was responsible for "the present-day sterility of psychoanalysis throughout the world."