A set of nine propositions about value systems were introduced as a basis for the four models of marriage counseling discussed: Counseling, General Form; Marriage Counseling, Individual (Family in Vitro); Marriage Counseling, Conjoint (Family in Vivo); Pathological or Grossly Deviant Systems in Counseling. The interactions of the various value systems of the communicants in each counseling model are discussed. Comments follow by William Zehv and Gertrude Zeman Gass. (Author)