 In his "The Assault on Truth" (1984), Masson argues that Freud may have abandoned his seduction theory because he feared that granting the truth of his female patients' claims (that they had been sexually abused) would hinder the acceptance of his psychoanalytic methods.Masson is a veganism advocate and has written about animal rights.Jeffrey Masson is the son of Jacques Masson, a Frenchman of Bukharian ancestry, and Diana (Dina) Zeiger from an Ashkenazi strict Orthodox Jewish family.