||Student nurses occasionally encounter the necessity of disclosing the state of a disease to patients themselves or their families during their 3-weeks practice period. The aim of this study is to rese...arch an influence on the practice when students know that the truth has been disclosed to the patients and their family. I evaluated the state of students' approaches to patients or their families, and evaluated their effects. Twenty-three 3rd-year students of the nursing department underwent practice in the surgical ward from June 19 toNovember 30, 2000. The students who consented to enrolling in the study were asked to record the contents of their care for and responses to the patients and their families. They supported patients in the preoperative period as well as medical staff members in ambiguous positions. The psychological approaches of the students to the patients whom they were assigned to were classified into 3 categories (positive, passive, ambiguous). The students who were not present at the preoperative explanation to their patients were not able to have a positive attitude of listening because they were not sure how much the patient understood of the explanation by the physicians. By contrast, the students who were present at the scene of preoperative explanation could approach their patients with positive support for early recovery and a sympathetic attitude because of their knowledge of the contents of the explanation. The presence at the preoperative explanation seemed to be useful in practice for the student nurses.