The policy provision dataset details for 34 policies which government tier (national, regional or local) is responsible for providing a policy in 28 three-tier and 11 two-tier countries. Please consult my article in Acta Politica for more information (e.g. sources, measurement, analysis).
The expert survey measures two functional characteristics of policies. We have asked 36 scholars with an expertise in public administration, fiscal federalism, public finance, and local government to indicate which jurisdiction should provide a policy when one has only to consider economic externalities and scale effects. This summary file provides the proportion of experts who indicated that a jurisdiction should provide the policy when one only considers scale effects and externalities. This file provides the original expert survey on externalities and scale effects which was sent to the experts. Please consult my article in Governance for more information (e.g. reliability, structural error, validity).
Schakel, Arjan H. (2010) "Explaining regional and local government: an empirical test of the decentralization theorem," Governance: An International Journal of Policy, Administration and Institutions 23 (2): 331-355. [doi] [pdf] [appendix]