As part of the credibility revolution in applied economics, researchers need to turn away from significance thresholds and stars, and instead focus on economic importance. Yet, existing measures of importance in regression analysis have fundamental flaws. Using an axiomatic approach, I develop...

This paper proposes a simple method measuring spatial robustness of estimated coefficients and considers the role of administrative districts and regions' size. The procedure, dubbed "Grid and Shake", offers a solution for a practical empirical issue, when one compares a variables of interest...