We use seasonal ARIMA methods to study the imposition and removal of national uniform social distancing restrictions in response to Covid-19 in New Zealand for six crime types in six cities. We then use the estimated models to forecast counterfactual crime trajectories. Novel elements include...

We use seasonal ARIMA methods to study the imposition and removal of national uniform social distancing restrictions in response to Covid-19 in New Zealand for six crime types in six cities. We then use the estimated models to forecast counterfactual crime trajectories. Novel elements include...

The Upward Pricing Pressure (UPP) test developed by antitrust economists Joseph Farrell and Carl Shapiro marks a new era in antitrust and provides an alternative to the traditional concentration-based tests in merger analysis. In addition to being free of market de nition, the UPP's appeal lies...

The diversion ratio is a key ingredient to the calculation of the Upward Pricing Pressure (UPP) test, which is a new shortcut for screening mergers. It measures the degree of substitutability between the merging goods, which affects the potential for price increase post-merger. There is...

The diversion ratio is a key ingredient for merger analysis, as mentioned in the new Horizontal Merger Guidelines (2010) in the U.S. and similar documents abroad. It is a measure of substitutability between merging goods, which determines the potential for price increase post-merger. There is...