This paper evaluates the effects of some standard procedural variations on outcomes in posted offer oligopoly experiments. Variations studied include the presence or absence of market information, the use of re-matching or fixed seller pairs and alterations in the order of sequencing....

Many aspects of antitrust policy are influenced by the possibility that sellers in concentrated markets may have the power to raise prices above competitive levels. Of course, anyone can raise prices, so the issue is whether a change in structure, e.g., a merger, will allow one or more sellers...