A Laboratory Investigation of Deferral Options

Ryan Oprea, Daniel Friedman and Steven T Anderson

Santa Cruz Department of Economics, Working Paper Series from Department of Economics, UC Santa Cruz

Abstract: An irreversible investment opportunity has value V governed by Brownian motion with upward drift and random expiration. Human subjects choose in continuous time when to invest. If she invests before expiration, the subject receives V−C : the final value V less a given avoidable cost C . The optimal policy is to invest when V first crosses a threshold V ∗ = (1 + w∗ )C , where the option premium w∗ is a specific function of the Brownian parameters representing drift, volatility and discount (or expiration hazard) rate. We ran 80 periods each for 69 subjects. Subjects in the Low w∗ treatment on average invested at values quite close to optimum. Sub jects in the two Medium treatments and the High w∗ invested at values below optimum, but with the predicted ordering, and values approached the optimum by the last block of 20 periods. Behavior was most heterogeneous in the High treatment. Subjects underrespond to differences in both the volatility and expiration hazard parameters. A directional learning model suggests that sub jects react reliably to ex-post losses due to early investment, and react much more heterogeneously (and on average more strongly) to missed investment opportunities. Simulations show that this learning process converges on a nearly optimal steady state.

Keywords: Real options; optimal stopping; laboratory experiment; fractional factorial design (search for similar items in EconPapers)
Date: 2007-03-21
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