@techreport{NBERw4986, title = "The Effect of Uncertainty on Investment: Some Stylized Facts", author = "John V. Leahy and Toni M. Whited", institution = "National Bureau of Economic Research", type = "Working Paper", series = "Working Paper Series", number = "4986", year = "1995", month = "January", URL = "http://www.nber.org/papers/w4986", abstract = {The theoretical relationship between investment and uncertainty is ambiguous. This paper briefly surveys the insights that theory has to offer and then runs a series of simple tests aimed at evaluating the empirical significance of various theoretical effects. Our results from a panel of U.S. manufacturing firms indicate a negative effect of uncertainty on investment consistent with theories of irreversible investment. We find no evidence for a positive effect via the channel of the convexity of the marginal product of capital, and we find no evidence for the presence of a CAPM-based effect of risk.}, }