Family typologies identified in father-daughter incest are (1) the diffuse, disintegrated family which barely maintains itself as an interactional system; and (2) the isolated family system, which develops strong internal bonds in the absence of social bonds outside the family. The first type of incestuous family is said to be characterized by exploitative relationships and punitive or no communication. Such families are indicated to typically disregard social norms such as the incest taboo. In the second type of family system, the father often turns to the daughter for consolation and sexual gratification if his wife is physically or psychologically unavailable to him. Concerning the parents' role in the incestuous relationship, the father is portrayed as being frustrated in his marital relationship and suffering from loneliness and emotional neglect; or he may be tyrannical and exploitative, using the daughter as a pawn in the pursuit of power over her through sex and violence. The mother/wife is viewed as a silent partner to the incest, as she is unable to sustain a nurturing, affectionate relationship with either her husband or daughter. The daughter is seen as victimized in three ways: expectations pertaining to her father are disappointed; the love and protection she receives from her mother is insufficient; and the intervention of society traumatizes her. The only approach that can save family members from extremely debilitating consequences is family therapy, which should focus on the achieving of a new balance for the better survival of the family system. Thirty-four references are listed.