Abstract
In the first part we present a tool (D.A.T.U.S) to help students to put in order the optional subjects they wish to take when not all subjects can be chosen. Conflicting interests, such as affinity with tastes vs. easiness to pass, or teacher vs. places available, as well as the number of alternatives, mean that the task is complex and help is required. D.A.T.U.S. provides the student with a set of criteria from which to choose those that best fit his or her case and a set of scales for evaluating the subjects. Taking into account the importance the decision maker attributes to the chosen criteria, the tool will provide a final value that will put the subjects in order. The second part of the study is devoted to assessing the validity (face, content and convergent) of D.A.T.U.S. With the participation of 98 final-year undergraduates, we obtained convergent validity values around .89. (Key words: Decision Aid, University Counseling, Validity Decision Aid, Applied Decision Analysis).
