For over five decades, diffusion indexes have been widely used by statistical and economic agencies as an instrument to summarize the dynamics of a group of disaggregated time-series economic data. In this note we revise the methods for constructing diffusion indexes, propose a novel generalized...

This paper documents that Mexican households anticipated the fiscal reform of 2014 several months before enacted. This change in expectations is documented using a novel source of information available in Google Trends, among other sources. It then analyzes the economic consequences of this...