National innovativeness is one key driver of economic development. The relation of national innovativeness and national culture has been firmly established by research. Cultural factors, however, influence national innovativeness via different mechanisms on the macro-, meso-, and micro-level of a country. In our paper, we build on existing research on the link between cultural dimensions and national innovativeness to develop a new model that classifies different cultural dimensions in groups according to their mechanism: political, social, or individual (PSI-model).