This article presents empirical evidence that people use anchoring to form their valuation of an object. Using data from the on-line auction Bidz.com, we found that people bid more for an item with a higher posted 'buy now' price than for an identical item with the lower posted 'buy now' price.

Purpose – Existing empirical studies that document momentum trading strategies do not provide any insight on how investors choose the time horizon that is used to compute the past stock returns. Indeed, since past returns over overlapping time periods are positively correlated, it is hard to...