Value judgments play a role in evaluation by determining the anticipated behavioral outcomes, what is measured, techniques for measurement, and decision making. Value judgments are usually faced only at the decision-making stage. Methods to analyze values will hopefully be given more emphasis in future evaluation enterprises. Studies using individual difference data and those evaluating group performance will be necessary to determine the mixture of techniques most appropriate for evaluating a specific instructional system. Studies in the development of cognitive styles and in the conditions under which a specific style is most favorable should also use individual difference data. It is necessary to present the desirability of such studies to administrators and innovators. Related documents are EA 002 406 and EA 002 473. (MLF)