The use of psilocybin, repeated at a low dose, could offer a new form of treatment for individuals with differing forms of mental disorders.

I wrote the research team and have skimmed the article. Dose regimen was 0.05mg/kg every other day. This would be about 0.25mg in an adult female human. Or about 0.25g of moderate potency cubensis. Half that or less of strong cubensis (PE/APE/etc).