This report of six cases of father-daughter incest approaches the problem from a family transactional framework as well as an intrapsychic one. Incest is viewed as a symptomatic act which tends to maintain the familial homeostasis in a dysfunctional family. The individual intrapsychic condition of all of the family members mesh in using incest as a behavior pattern which reduces family tension. Characteristic were: 1, mother-daughter role reversal with the daughter the essential maternal figure in the household; 2, mothers who consciously or unconsciously facilitate the incestuous relationship with strong hostility against the daughter as well as considerable dependency on her as a substitute mother; 3, daughters who are revengeful toward the mother because of her deficient mothering and her disparaging of the woman's role as self-sacrificing with little or no gain; 4, wives who generate considerable sexual tension in their husbands while simultaneously depreciating them; 5, husbands