Uncertainty appears to vary strongly over time, temporarily rising by up to 200% around major shocks like the Cuban … Missile crisis, the assassination of JFK and 9/11. This paper offers the first structural framework to analyze uncertainty …. The parameterized model is then used to simulate a macro uncertainty shock, which produces a rapid drop and rebound in …

This paper shows that, with (partial) irreversibility, higher uncertainty reduces the impact effect of demand shocks on … investment. Uncertainty increases real option values making firms more cautious when investing or disinvesting. This is confirmed … both numerically for a model with a rich mix of adjustment costs, time-varying uncertainty, and aggregation over investment …

This paper investigates the relationship between infation uncertainty and investment using a panel of loan-level data … models of investment under uncertainty. … aggregates. The data show that periods of increased inflation uncertainty are associated with substantial reductions in total …

even after controlling for investment, size, book-to-market and momentum as well as other known predictors of stock returns …-adjusted discount rates. The model implies that the investment rate and the hiring rate predicts stock returns because these variables …

question, the evidence suggests uncertainty is damaging for short-run investment and hiring, but there is some evidence it may …This review article tries to answer four questions: (i) what are the stylized facts about uncertainty over time; (ii …) why does uncertainty vary; (iii) do fluctuations in uncertainty matter; and (iv) did higher uncertainty worsen the Great …