This volume presents papers and speeches given in the Experimental E- nomics Week in Honour of Dr Vernon L. Smith held in Okayama and Kyoto, 13-17 December 2004, which consisted of Dr Smith s public speech and the International Conference on Experiments in Economic Sciences: New - proaches to Solving Real-world Problems. Despite having a short history, experiments are now considered indispensable in economics as in other ?elds of science and engineering. As Dr Smith s Nobel Prize (2002) shows, experimental economics has now established itself in modern economics. In such an environment,...