We develop a model of policy experimentation in federal systems in which heterogeneous districts choose both whether to experiment and the policies to experiment with. The prospect of informational spillovers implies that in the fi rst best the districts converge in their policy choice....

Decentralisation is invariably among the recommendations that international organisations such as the World Bank make for an enhancement of social provisions, and particularly a better targeting of social assistance regimes, in Eastern and Central Europe. However, theoretical literature as wel...