Can you point to any research that says real money exchanges perform any better than the play money exchanges? Here's some saying just the opposite published by

Can you point to any research that says real money exchanges perform any better than the play money exchanges? Here's some saying just the opposite published by Wharton: http://bpp.wharton.upenn.edu/jwolfers/Papers/DoesMoneyMatter.pdf http://bpp.wharton.upenn.edu/jwolfers/Papers/DoesMoneyMatter... - this opinion about needing real money in a prediction market to be effective is a long held conventional wisdom that has proved to be wrong time and time again.