In spite of the apparent success of affirmative action (AA) in the past, many oppose such policies. Opponents argue that the cost of attaining proportional representation by preferential policies is too high, reducing the quality of selected groups and stigmatizing members of the protected...

We report results from a validation study of Nielsen Homescan data. We use data from a large grocery chain to match thousands of individual transactions that were recorded by both the retailer (at the store) and the Nielsen Homescan panelist (at home). First, we report how often shopping trips...

We study a large intervention intended to reduce hospital readmission rates in Israel. Since 2012, readmission risk was calculated for patients aged 65 and older, and high-risk patients were flagged to providers upon admission and after discharge. Analyzing 171,541 admissions during 2009-2016,...