A recommendation of: Charlotte F. Kroll, Koen Schruers, Wolfgang Viechtbauer, Claudia Vingerhoets, Leonie Seidel, Arno Riedl, Dennis Hernaus Absence of a meaningful effect of intranasal oxytocin on trusting behavior: a registered report with pooled equivalence testing https://osf.io/94vrb/files/twd3c
Kroll et al. (Tue,) studied this question.