Uncertainty and Investment Dynamics

Nicholas Bloom (), Stephen Bond and John van Reenen ()

Review of Economic Studies, 2007, vol. 74, issue 2, pages 391-415

Abstract: This paper shows that with (partial) irreversibility higher uncertainty reduces the "responsiveness "of investment to demand shocks. 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 decisions and time and also empirically for a panel of manufacturing firms. These "cautionary effects" of uncertainty are large-going from the lower quartile to the upper quartile of the uncertainty distribution typically halves the first year investment response to demand shocks. This implies the responsiveness of firms to any given policy stimulus may be much weaker in periods of high uncertainty, such as after the 1973 oil crisis and September 11, 2001. Copyright 2007 The Review of Economic Studies Limited.

Date: 2007
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