Diz-me para onde exportas, dir-te-ei como evoluirá a tua produtividade

A propósito de "As estrelas do Norte" recordo esta conclusão de Chad Syverson em "What Determines Productivity":

"Interestingly, firms exporting to higher-income regions saw greater productivity growth. Apparently the export market - not just the exporter itself - matters. This raises interesting selection issues about which markets firms choose to export to, even conditional on the decision to export in the first place."