“…The need for such preparation is predicted on the belief that hospitalization and surgery are stressful and anxiety-producing experiences that can lead to transient or long-term psychological disturbances in most children. A number of behavior problems have been observed in children who have been hospitalized for surgery (Chapman,Loeb,& Gibbons,19S6;Gellert,19S8) with estimates for the incidence of these problems ranging from 10% to 35% (Jessner, Blom, & Waldfogel, 1952;Prugh, Staub, Sands, Kirschbaum, & Lenihan, 1953;Schaffer & Callender, 1959). Cassell (1965) reported slight psychological upset in as many as 92% of the hospitalized children studied.…”