An examination of market efficiency: Information order effects in a laboratory market

A series of laboratory double auction experiments is conducted to examine whether the order of information releases affects market prices. Behavioral research on belief revision has shown that individuals are influenced by the order in which a series of information items is presented. The experiments are designed to provide a controlled investigation of whether order effects as displayed by individuals also can influence prices in a market setting where outcomes are not a simple aggregation of individual behavior. Significant evidence is found of a recency effect in the experimental asset markets.