If time with pdocs is limited to about an hour in total I would trust my psychologist, who sees me on a weekly basis, a lot more to come up with a diagnosis.

But I was generally wondering under what circumstances a psychiatrist would be in a better position to assess my psychological condition than a psychologist? Psychiatrists prescribe meds, psychologists don't, but apart from that, what's the basis of expecting a better qualified diagnosis from a pdoc?