Using eight sessions (twenty-four ten-period markets) in a double ABA cross-over design, we demonstrate clear evidence of market power in double-auction emission trading markets (agents who are not constrained to only buy or sell). Conventional theory predicts that in half of the market-power...

In this paper we employ experimantal economic methods to examine the effect of market structure on the use of marketable emmisions permits. In particular, we ask whether firms can strategically manipulate a product market using marketable emissions permits. Subjects participate in two markets, a...

We test the null hypothesis that involuntary transfers for the provision of a public good will completely crowd out voluntary transfers against the warm-glow hypothesis that crowding-out will be incomplete because individuals care about giving. Our design differs from the related design used by...