Professor Zak's empirical studies on trust and oxytocin

In supporting his thesis that “market behavior is morality embodied”, Professor Zak describes empirical studies on trust and oxytocin, with emphasis on his own work. I will discuss this work, suggesting that some conclusions are too enthusiastic.

Research highlights► Studies on trust and oxytocin by Paul Zak and coauthors are reviewed. ► The authors analyzed experimental data in doubtful ways, thus exaggerating results. ► The authors made highly doubtful cross-country comparisons.