Abstract

Theory suggests that a form of Kantian morality has evolutionary foundations. To investigate the relative importance of Kantian morality and social preferences, we run a laboratory experiment on strategic interaction in social dilemmas. We structurally estimate social preferences and Kantian morality at the individual and aggregate level. We observe considerable heterogeneity in preferences. Finite mixture analyses show that the subject pool is well described as consisting of two or three types: all display a Kantian moral concern, most are behindness averse, while the attitude towards aheadness varies. The value of adding Kantian morality to well-established preference classes is also evaluated.