How does the psychiatrist know?

Abstract

An important question in the philosophy of psychiatry is: what is the proper method of psychiatric diagnostic reasoning? Let us call this the Methodological Question. In this paper, I criticize the answer that proponents of phenomenological psychiatry have given to this question and present an alternative. I argue that their answer fails to meet several adequacy conditions for a theory of psychiatric diagnostic reasoning. I then show how my own answer to the Methodological Question – the Model-Based Account of diagnostic reasoning – meets these adequacy conditions. I conclude that the Model-Based Account of diagnostic reasoning is preferable to the Phenomenological Account.