A fascinating study has found that sniffing female tears significantly reduced male aggression and decreased activity in aggression-related brain networks. It’s suggested that the effect, which is caused by chemical signals in tears and is also seen in rodents, serves a protective function.
I’m guessing they had to stay within their funding/budget and didn’t want to reduce the sample size to increase the number of variables tested. MRIs are expensive
I could believe that. Hopefully they can get more funding for further testing.