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Using a Bayesian framework, this paper considers a risk-neutral firm which has to pick an investment project out of many that are available. It is shown that, if the firm is allowed to collect information, it will usually devote some time to information gathering before choosing. The main result is that, when uncertainty increases, the firm finds it profitable to delay investment decisions even further in order to collect more information. Thus increased uncertainty decreases the current level of investment even under risk neutrality. Another implication is that increased uncertainties cause an increase in the demand for liquid assets.
Alex Cukierman (Sun,) studied this question.