A study was conducted to determine the Jungian personality types of selected groups of student and registered nurses, to identify their preferred learning styles, to ascertain the relationship between personality type and preferred learning style, and to identify the most productive learning styles for given personality types. Subjects' personality types were measured by the Myers-Briggs Type Indicator, while preferred learning styles were measured by the Media Effectiveness Chart. Results of the study indicated personality type differences among and between both student and registered nurses, a relationship between personality types and preferred learning styles, and that certain teaching methods were most productive for each personality type. Detailed analyses of the identified relationships are presented throughout the text. Based on the study findings, it was recommended that educational programs should be structured in such a way as to accommodate varying personality and learning styles, and that discussion seminars be regularly scheduled so that students might learn how various personality types contribute to their own learning. It was also suggested that learning experiences be provided for instructors with regard to personality type and learning style in order that optimum student development and learning experiences might be arranged. (JDS)