Data were obtained from 41 survivors of imprisonment by the Japanese
during World War II. Interview data suggested that these individuals,
despite the 40 years that had passed since their prisoner of war
experiences, showed manifestations of posttraumatic stress disorder,
notably a sleep disturbance marked by recurrent nightmares. MMPI data
suggested significant pathology, characterized as an anxiety state, in this
group. Half of the subjects met the full set of DSM-III criteria for
posttraumatic stress disorder.