When intervening in markets, say to block a merger, competition authorities are constrained by the limited information they have about the social desirability of the available alternatives. Compared to ex ante control, ex post control is based on the more accurate information that becomes...

We experimentally investigate how the managerial decision-making process affects choices in a Bertrand pricing game with an opportunity to form non-binding cartels. To do so we compare the effects of three decision-making rules for the firm (decisions by CEOs, majority rule and consensus) to...