Rosen attempts to explain the sense of reality that schizophrenics obtain from their hallucinations and delusions. He believes that these psychotics live under a death-threatening deprivation and that the becoming real of their imaginations is a last desperate attempt to ware off this destructive deprivation. The ego plays a game and it is the function of the imagination to provide the patient with those things necessary for the continuance of life. In the treatment of such cases it is necessary for the therapist to permit the patient to relive his decisive infantile frustrations and at this time afford him the opportunity of correcting these traumatic events. Rosen's recovered patients tell him that in their treatment he was able to help them overcome their deprivations by his behavior during the therapeutic process.