| Since the 1930’s, interdisciplinarity has been advocated in the social sciences for the purpose of achieving more comprehensive explanations of observable social phenomena. However, the realization of this promising perspective has been rather poor. This articles argues that two main causes of the failure to create interdisciplinarity social science can be distinguished, i.e., methodological and theoretical problems. Methodological problems stem either from taking a reductionist approach towards interdisciplinarity, or by mistaking measurements issues for theoretical topics. Theoretical problems result from the poor state and rate of theory formation within psychology. The implications of these problems are that the validity and reliability of explanations of macro social phenomena, which are provided by disciplines such as sociology and macro economics, are seriously at stake. |