The educational discipline of Management is an inexact science. Because of the difficulty in measuring the effects of the academic study of Management on decision-making and related behaviors, a commercial instrument, the "How Supervise?" questionnaire, was tested as a possible means of measuring "before and after treatment" behaviors. The instrument, nominally a knowledge sampler, was used more as an attitude, perception, and potential behavior sampler. The subjects used in this study were the entire population of credit and non-credit students regularly enrolled in either of the two most basic Management Development courses offered at Manatee Junior College. Five groups of basic Management students were sampled; the total number of subjects was 65. Two equivalent forms of the instrument were administered on the first and last day of class. National percentile scores were grouped and histographically displayed; the composite results indicate that significant improvement in decision-making behaviors did occur in the individual groups as well as in the composite population. It is recommended that this type of measurement be pursued on a broader base to determine more about the effects of classroom environment, the student profile, and individual professors on positive change in student attitudes and behaviors. (Author/AH)