Ants, Rationality, and Recruitment
This paper offers an explanation of behavior that puzzled entomologists and economists. Ants, faced with two identical food sources, were observed to concentrate more on one of these but, after a period, they would turn their attention to the other. The same phenomenon has been observed in humans choosing between restaurants. After discussing the nature of foraging and recruitment behavior in ants, a simple model of stochastic recruitment is suggested. This explains the "herding" and "epidemics" described in the literature on financial markets as corresponding to the equilibrium distributio n of a stochastic process rather than to switching between multiple equilibria. Copyright 1993, the President and Fellows of Harvard College and the Massachusetts Institute of Technology.
Volume (Year): 108 (1993)
Issue (Month): 1 (February)
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