Vertaling van "studies that were done—we find that people have a very open-minded attitude " (Engels → Frans) :

When we explain what has been done—and we know this from the studies that were done—we find that people have a very open-minded attitude.
Quand on explique les mesures qui sont prises—on le sait grâce à des études qui ont été faites—, on se trouve face à des gens qui ont une grande ouverture d'esprit.