One of the outstanding results of three decades of laboratory market research is that under rather weak conditions prices and quantities in competitive experimental markets converge to the competitive equilibrium. Yet, the design of these experiments ruled out gift exchange or reciprocity...

In this paper, the authors report the results of a series of efficiency wage experiments. Some of the key predictions of the efficiency wage hypothesis are qualitatively confirmed by the data: higher wages caused a reduction in shirking; firms offered contracts which exhibited positive job...

The exercise of insider power is frequently considered as a major cause of involuntary unemployment. The authors show that under standard assumptions--insiders are selfish and they need not fear the loss of their job--insider power does not cause unemployment but leads to the introduction of a...