Geralmente é uma discussão difícil.
Why would economic prosperity cause more societal trust? One possibility, advanced already in Banfield, 1958, is that generalised trust norm is a luxury good, whose income elasticity is large, so that in a prosperous society it replaces the parochial trust norm. Another possible explanation that we elaborate upon in the paper, is that enhanced economic prosperity acts as a signal that fellow citizens are trustworthy. The more optimistic assessment then breeds trust among individual citizens. This theory suggests the possibility of a mutual feedback between trust and economic growth.
Pois é. Complicado, não? Mas mostra que é importante prosseguir nesta investigação.