I recently came across a Brookings Institution blog post regarding the relationship between economic inequality and various measures of well-being.
The average incidence of worry is higher in more unequal metro areas: https://t.co/uWvYFMQnpY pic.twitter.com/A3vYX1SXXV
— Brookings Econ (@BrookingsEcon) November 8, 2015
Setting aside the lack of statistical controls and probable confounds, the practical significance implied by their own plots was actually rather trifling.