Using individual-level data from the Asian Barometer Survey, Wave 3, this essay examines the effect of generational change on regime support in eleven East Asian countries with different histories of democracy (including nondemocracies). We test the effect of the political socialization hypothesis derived from political culture theory against the rational calculation hypothesis derived from the institutional perspective. Our conclusion is that regime support is influenced mainly by how the individual evaluates the performance of the system in which he or she now lives, not by early political socialization.