ALTHOUGH THE PSYCHOLOGICAL EFFECTS OF HEMOPHILIA ON children have been described in an extensive literature, it is surprising that none of the studies to date has approached this subject from a developmental perspective, that is, one which examines the interplay between the illness, its management, and the sequential unfolding of the child's personality. Equally striking

is the almost total absence of study in relation to the psychological impact of this chronic illness on the healthy sibling of the affected child.

In an effort to bridge these gaps and deepen our understanding of the special burdens placed on the hemophilic child and his nonaffected sibling(s), the psychoanalytic treatment and investigation of Timmy and Max which is presented in this paper provides a unique opportunity for study, in that one twin was hemophilic and the other was healthy. While the