degree of pessimism of the representative agent is the mean of the individual ones weighted by their index of absolute risk …

-specific) uncertainty and offers ten main takeaways. The second part reviews contributions on the fast-growing strand of the literature … focusing on the macroeconomic effects of uncertainty spillovers and global uncertainty. The last part proposes a novel measure … of global financial uncertainty and shows that its unexpected variations are associated to statistically and economically …

In this paper we offer an analysis of the effects of uncertainty about future tax policy on irreversible investment …. The main message of the paper is that investment is not much affected by the degreee of tax policy uncertainty. This is … that reducing tax policy uncertainty is probably no magic bullet to increase private investment spending …

derives max-min, max-max and min-max regret policies to deal with this particular form of climate (model) uncertainty and with …

The paper examines the monetary-fiscal interactions in a monetary union model with uncertainty due to imperfect central … bank transparency. We first show that monetary uncertainty disciplines fiscal policymakers and thereby reduces taxes … uncertainty is mitigated. As a consequence, monetary union enlargement may lead to a more aggressive fiscal stance in some member …

technologies under uncertainty. Specifically, given two technologies, one with lower costs at present, but the other with greater … uncertainty in the returns to R&D, how should one allocate the R&D budget? We develop a multi-stage stochastic dynamic programming … variance in the uncertainty in returns to R&D and with the skewness of the uncertainty. We also present an illustrative case …

In a world of radical uncertainty the frequency distributions of economic variables deviate from the normal …

We examine asset prices in a representative-agent model of general equilibrium. Assuming only that individuals are risk … averse, we determine conditions on the changes in asset risk that are both necessary and sufficient for the asset price to … incomplete in the sense of containing an uninsurable background risk, such as a risk on labor income. We extend our model to show …

can undertake an active portfolio management strategy by investing in both risk-free and risky assets. Using a two … in each period. -- Consumption and labor taxation ; equivalence ; risk …

setting, an increase in uncertainty about future shocks causes significant contractions in the economy and may lead to non … outcomes. Fluctuations in uncertainty and the zero lower bound help our model match the unconditional and stochastic volatility …