Industrial organization is mainly concerned with the behavior of large firms. Experimental industrial organization therefore faces a problem: How can firms be brought into the laboratory? The main approach relies on framing: Call individuals firms! This experimental approach is not in line with...

Theories of industrial organization (IO) are tested in the laboratory more and more often. The example we consider throughout the paper is oligopoly theory, specifically, the Cournot and the Stackelberg model of duopolistic quantity competition with homogeneous products. These models have often...