A broad strand in experimental economics has been devoted to testing the "Hayek hypothesis", which is commonly understood as the proposition that competitive markets conform to basic efficiency postulates. The precise content of this hypothesis, however, often remains fairly vague. We begin by...

We present a preliminary overview of a political stock market experiment we have conducted at the Universitaet Passau. This experiment differs from previous work (e.g. the renowned Iowa Electronic Markets) in that it is built on the call market institution rather than on double auction...