Past research has suggested that supervisors, when evaluating the poor performance of a subordinate, are influenced by the outcome of the performance. Nurses (N=55) in advanced training assumed the role of a supervisor of a nurse described as having performed poorly. Half of the subjects read an incident without an outcome and half read an incident with either a positive or negative outcome. Questions following the incident description assessed the perceived probability of subsequent outcome, the responsibility of the nurse involved, and attributions. Results indicated that outcome knowledge and content affected probability, responsibility, and attribution judgments. Subjects presented with outcome knowledge rated the outcome as more likely to occur again, saw the subordinate as more responsible for the behavior, and made more internal attributions for the behavior than those who had no outcome knowledge. These effects were more pronounced when the outcome was negative than when it was positive. (Author/NRB)