A comparative measure of decentralization for Southeast Asia

In this article we set out a fine-grained measure of the formal authority of intermediate subnational government for Indonesia, Malaysia, the Philippines, South Korea, and Thailand that is designed to be a flexible tool in the hands of researchers and policymakers. It improves on prior measures by providing annual estimates across ten dimensions of regional authority; it disaggregates to the level of the individual region; and it examines individual regional tiers, asymmetric regions, and regions with special arrangements. We use the measure and its elements to summarize six decades of regional governance in Southeast Asia and conclude by noting how the Regional Authority index could further the dialogue between theory and empirics in the study of decentralization and democratization.