The Nutrition and Gerontology Services Project attempted to affect basal nutrition knowledge and address dietary changes for 478 California senior citizens who were live-in residents in homes for the aged. Two instruments were employed to measure study variables. Knowledge of nutrition was measured by the Nutritional Learning Scale, an orally administered 12-item multiple choice format which represented a sample of the content domain addressed by instruction strategies. Nutritional behavior was measured by the 24-hour dietary recall procedure. Subjects were divided into a control and experimental group. The experimental group was instructed with audiovisual materials, individual conferences, and written materials for dietary needs and behaviors. The control group received only written materials. Follow-up interviews were held with each group at a 1-month and a 3-month measurement point. The experimental group demonstrated significantly more growth in both the knowledge and behavior areas than did the control group at both the 1-month and the 3-month intervals. (Author/JMK)