Modern Woman: The Lost Sex is a 1947 work of scientific literature written by Ferdinand Lundberg and Marynia F. Farnham, M.D. which discusses the sociological and psychological context of American women in the post World War II era.
Lundberg, a sociologist and social historian, and Farnham, a psychiatrist affiliated with the New York State Psychiatric Institute and Hospital, argue that "contemporary women in very large numbers are psychologically disordered and that their disorder is having terrible social and personal effects involving men in all departments of their lives as well as women."[1] This book became a national bestseller and contributed to both the return to domesticity in the post-WWII decades and the psychoanalytic antifeminist movement.