The problem with which this investigation is concerned is that of determining the differential impact of informational delivery systems T1 (games and simulations), T2 (closed-circuit television), T3 (programmed learning), and T4 (standard lecture and discussion) on student understanding of elementary economic concepts as measured by the Test of Understanding in College Economics. In addition, the study seeks to determine whether a significant relationship exists between students' revealed preferences for specific informational delivery systems and increased economic understanding, and whether a significant relationship exists between students' evaluation of specific informational delivery systems as most effective in preparation for class examinations and increased economic understanding.