This Master thesis deals with morality, opposing the economic view of human action to the psychological one. First of all, the Homo oeconomicus, which is a common economic model, will be described theoretically, so that in further consequence it can be focused on the critique within the empirical economic research, describing another well-known model, the Homo reciprocans. The economic point of view is compared with the psychological theory of Lawrence Kohlbergs stages of moral development. This scientific theory is fundamental for the empirical part of this Master thesis since the MJT (Moral Judgment Test) is used, an experimental questionnaire which has been developed by Dr. Georg Lind. The Moral Judgment Test measures someones moral judgment by computing the “C-Score“, whereas C stands for competence. The analysis, in the course of this thesis, aims at answering five central questions, concerning the sex, the duration of study (as measured by the number of semesters), the field of study, the income of the participants and the combined, monthly net earnings of their parents. Therefore, also socio-demographic data (in addition to the MJT), regarding the sum of all 390 subjects, has been collected. The following fields of study at the Karl-Franzens-University Graz have been consulted: Business administration, economics, law, humanities and theology. Several hypotheses are evaluated with statistical tests in order to show any differences between the above-mentioned, socio-demographic criteria. The mean “C-Scores“ of the respective groups will be compared with each other. In this Master thesis it will be tested if the mean “C-Scores“distinguish significantly in relation to the sex, the number of semesters, the field of study, the occupation, the income of the interviewed students and the monthly net earnings of both parents together.