shocks to aggregate uncertainty, I introduce a small, time-varying risk of economic disaster in a standard real business … risk of disaster does not affect the path of macroeconomic aggregates - a "separation theorem" between macroeconomic … variation in risk premia over time, are observationally equivalent to preference shocks. An increase in the perceived …

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 …

version is then expanded by introducing cost and demand shocks and uncertainty. The latter enters the model via second order … uncertainty - regarding growth and inflation expectations - can lead to lower nominal interest rates set by the central bank … persistent shocks and uncertainty · Comparative statics and a wide range of numerical simulations · Mathematical concepts and …

In line with the fallacy of riskification of uncertainty by which decision makers believe that the effects of … organizational inefficiency in dealing with uncertainty shocks—exogenous hazards whose welfare effects spread across industries and … markets, such as natural disasters, terrorist attacks, and financial crises—as a problem of risk management. This is …

the firm's exposure to IST shocks and risk premia. Our calibrated model replicates: i) the predictability of returns by … returns by aggregate investment and valuation ratios; and v) a downward sloping term structure of risk premia for dividend …

fit the model to US data, allowing the volatility of cross-sectional idiosyncratic uncertainty to fluctuate over time. We … refer to this measure of volatility as 'risk'. We find that fluctuations in risk are the most important shock driving the …

featuring consumption externalities, recursive utility, and jump risk …