We develop a model that incorporates salient features of growth in modern economies. We combine the expanding-variety growth model through horizontal innovations with a hierarchy of basic and applied research. The former extends the knowledge base, while the latter commercializes it. Two-way...

We examine to what extent central banks should release their internal assessments concerning the links between money growth and future inflation, and between employment and inflation. We show that the social value of knowledge transparency concerning real shocks is negative since the disclosure...

Collective consumption decisions taken by the members of a household may prove inefficient. The impact on market performance depends on whether household inefficiencies are caused by inefficient net trades with the market or by inefficient distribution of resources within households. Inefficient...

We introduce democratic mechanisms where individual utilities are not observable by other people at the legislative stage. We show that the combination of three rules can yield e±cient provision of public projects: first, flexible and double majority rules where the size of the majority depends...

We examine financial intermediation when banks can offer deposit or loan contracts contingent on macroeconomic shocks. We show that the risk allocation is efficient if there is no workout of banking crises. In this case, banks will shift part of the risk to depositors. In contrast, under a...

Insurance contracts contingent on macroeconomic shocks or on average bank capital could be a way of insuring against systemic crises. With insurance, banks are recapitalized when negative events would otherwise cause a write down of capital or even bank insolvency. In a simple model we...

Based on contribution patterns to parties in Germany and elsewhere, we suggest that democracies should use a mixed system where private funding can play a larger role than public funding. In Germany the high level of public funding for parties can be reduced without expecting undesirable effects...

When politicians have lower discount factors than voters, democratic elections cannot sufficiently motivate politicians to undertake long-term socially beneficial projects. When politicians can offer incentive contracts which become effective upon reelection, the hierarchy of contracts and...