Examined burnout among nursing assistants (n=245). Found that both stressor and appraisal variables influenced feelings of burnout. Stressor variable, frequency of disturbing patient behaviors, best explained feelings of reduced Personal Accomplishment. Appraisal variable, reaction to patient behaviors, best explained Emotional Exhaustion. Found support for cognitive appraisal model in that appraisal played important role in determining burnout. (Author/NB)