Sweepstakes and contests are an extremely common promotional strategy used by firms. The sweepstakes and contests often differ significantly in the design of reward structure. For example, in 1999, Godiva Chocolates conducted a sweepstakes where one box of chocolates contained a diamond...

This paper demonstrates the importance of simultaneously considering two behavioral biases, correlation neglect and overprecision, in characterizing belief formation. Our laboratory experiments reveal that, relative to independent signals, subjects overvalue moderately or strongly correlated...