This discussion paper resulted in a publication in the <I>Economic Journal</I> (2014). Volume 124, pages 887-916.<P> In the process of regulatory reform in the electric power industry, the mitigation of market power is one of the basic problems regulators have to deal with. We use experimental data to...</p></i>

Results from single-period monopoly experiments (nondurable environment) are compared with results from multiperiod experiments that have features of a durable-goods environment. Average prices were below the static monopoly benchmark price in all settings. Observed initial prices were higher in...

Internet auctions on eBay and Yahoo allow sellers to list their auctions with a Buy-Now option. In such auctions the seller sets a buy price at which a bidder may purchase the item immediately and end the auction. In the eBay version of a buy-now auction, the buy-now option disappears as soon as...