Medicine and psychology as kinsfolk in the family of the sciences may be regarded as cousins, and if "once removed" are restorable to a sympathetic kinship. They are related by the ties of a common origin, joined by nature but put asunder by the artificial caste system of academic tradition. Body and mind in their making are made one; but, as applies no less to the ritually wedded couple, the disturbing question arises: Which one? In this instance each may well take the pledge unreservedly to honor, cherish and obey the other.
The claim of possession, that the body has a mind or the mind a body, is as misleading as the allied doctrine of demon possession, which primitive explanation of disease registers the first encounter of physician and psychologist. The early medicine man was priest, psychologist and physician in one, and a bit of a faker too.