In the last few decades, a perspective on how to resolve wicked social problems has become increasingly prominent: the cultural theory pioneered by anthropologist Dame Mary Douglas. So far, the empirical evidence garnered in support of this approach has mostly been of a qualitative nature. Cultural theory has fared less well in survey-based, statistical tests. However, several features make it hard to test the theory with questionnaires. We overcome this research dilemma by showing how cultural theory can be tested with observational and experimental tests developed in cross-cultural psychology. We argue that this is possible due to the remarkable overlap between concepts and theories in cross-cultural psychology and Douglas' approach. We present five research designs that add up to a rigorous test of cultural theory. Finally, we sketch some contributions that cultural theory could make to the further development of cross-cultural psychology, as well as to efforts to resolve wicked problems, if it were thus confirmed.