Official price indexes, such as the CPI, are imperfect indicators of inflation calculated using ad hoc price formulae different from the theoretically well-founded inflation indexes favored by economists. This paper provides the first estimate of how accurately the CPI informs us about "true"...

The poor diets of many consumers are often attributed to limited access to healthy foods. In this paper, we use detailed data describing the healthfulness of household food purchases and the retail landscapes in which these consumers are making these decisions to study the role of access in...

This paper uses detailed barcode data on purchase transactions by households in 49 U.S. cities to overcome a large number of problems that have plagued spatial price index measurement. We identify two important sources of bias. Heterogeneity bias arises from comparing different goods in...