For example, in a recent paper, Shleifer and his co-authors measured government effectiveness by mailing letters to non-existent business addresses in 159 countries and measuring how long it took for the letters to be returned – or whether they were returned at all.
Por ejemplo, en un estudio reciente, Shleifer y sus coautores calibraron la eficacia estatal enviando cartas a empresas inexistentes de 159 países y observando cuánto tardaban en regresar las cartas a sus remitentes o si siquiera volvían.