Imperfect Cognitions

In today's post, Anneli Jefferson discusses her new book , Are Mental Disorders Brain Disorders? (Routledge 2022) .  She is a lecturer at Cardiff University who works in the philosophy of psychology, moral philosophy, and at the intersection of the two.  In the last 20 years or so, neuroscience and psychiatry have increasingly been researching what brain differences can be found in people suffering from mental distress, and how these might help to explain and treat mental disorders. There is a long-standing belief that mental disorders must be brain disorders, because whatever psychological dysfunction we find must have some basis in the brain. However, many psychiatrists, clinical psychologists and philosophers strongly resist this idea, and debates about this issue can get quite heated. In my book  I set out to get to the bottom of what makes this debate so intractable and provide a way forward in the debate. I argue that resistance to calling mental disorders brain di...

Today's post is by Harriet Fagerberg at King’s College London & Humboldt-Universität zu Berlin on her recent paper “ Why mental disorders are not like software bugs ” (forthcoming, Philosophy of Science ). What, if anything, is the difference between mental disorders and brain disorders? Are mental disorders brain disorders? If not, are they disorders at all? According to one prominent view in the philosophy of psychiatry, mental dysfunction does not entail brain dysfunction just as software dysfunction does not entail hardware dysfunction in a classical computer. Wakefield writes:  It is true that every software malfunction has some hardware description; that is not at issue. Rather, the point is that a software malfunction need not be a physical hardware malfunction. Analogously, even if all mental states are physical states, it does not follow that a mental dysfunction is a physical dysfunction. (p. 129, Wakefield, 2006 ; see also Papineau, 1994 ) Nevertheless, because dysf...

In this post, Anneli Jefferson , Leverhulme Early Career Fellow at the University of Birmingham summarizes her paper on the nature of brain disorder, recently published in Synthese. A long-standing project pursued by some psychiatrists is to show that mental disorders are brain disorders and that mental dysfunction can best be explained as brain dysfunction. But what exactly is the relationship between mental disorders and brain disorders and when is a mental disorder a brain disorder? This is the question I address in my paper. Some psychiatrists believe that it follows from the acceptance of physicalism that all mental disorders are brain disorders. If all mental states are brain states, shouldn’t all disordered mental states be disordered brain states? Many philosophers have resisted this conclusion, appealing to the hardware/software distinction to argue that even if dysfunctional mental processes are realised in the brain, this does not mean that the underlying brai...