Griffith, Rachel; Leibtag, Ephraim; Leicester, Andrew; … - 2008
price changes faced by consumers. Substitution and outlet bias, two commonly studied concerns, are both driven by consumer … choices of what and where to buy. However, consumers also make other choices, including how much and when to buy. We discuss … the implications of consumers' timing and quantity decisions have on standard practices of computing a price index. We use …