We conduct economic experiments to gauge the level of cooperation between conglomerate rivals. First we run control experiments to observe cooperation between subjects acting as duopolists in one of two markets. In the control experiments, subject pairs choose a quantity xi (or yi) from a payoff...

Multimarket contact between duopolists in an X and Y market is modelled with a trigger strategy. We show that mildly restrictive price-cap regulation in the X market decreases Y market quantities; but restrictive caps in the X market have a positive impact on Y market outputs. Behavior in...