Abstract

This article contributes to the discussion regarding the relationship between idealisation, de-idealisation and cognitive scientific progress. In this, I raise the question of the significance of the gradual de-idealisation procedure for constructing political science theories. I show that conceptions that assume the reversibility of the idealisation process can be an extremely useful theoretical perspective in reconstructions of political science modelling and analyses of scientific progress in political science. I base my position on the results of the methodological reconstruction of Richard Jankowski’s theory of voting. My reconstruction and results of empirical studies show that by gradually removing simplifying assumptions, models can emerge that more accurately identify the determinants of the voting decision and the corresponding relationships. In the case I analysed, the transition from coarse-grained to fine-grained models likely demarcates the line of scientific progress.