Imperfect Cognitions

Here is the fifth post in our series on social approaches to delusions. Today, Phil Corlett raises some concerns about the arguments proposed in favour of a social turn in the previous posts, offering a different perspective. Phil Corlett Lots of people I like and respect who think about delusions have recently decided that social processes are relevant to belief formation and maintenance and thence to delusions. I call this the social turn . The preceding blog posts in this fascinating series suggest: 1) That we give testimony about the quality of other individuals as sources of testimony, and as such, we should define delusions and (given their social contents) delusions arise within individuals, through inherently social processes. 2) That testimonial abnormalities might be domain specific and dissociable from general reasoning abnormalities, and further that the socially specific deficit is one of coalitional cognition – how we form and sustain alliances with conspecifics. 3) That...

Today I want to share some thoughts on last week's interesting post  on de-rationalising delusions. In the  pre-print  of their thought provoking paper, Vaughan Bell has argued, with Nichola Raihani and Sam Wilkinson, for the view that models of delusions need to include "alterations to coalitional cognition" and to depart from the dominant views that characterise delusions primarily as irrational beliefs. Here I am not going to discuss their positive proposal, which sounds plausible, but just comment on how the so-called 'dominant account' the authors object to in the paper groups together heterogeneous views of what makes delusions distinctive and pathological. Some of the cognitive accounts Bell and colleagues have as their polemical target hold that: (1) the irrationality of delusions is distinctive from (more radical than) the irrationality of other beliefs; and (2) the irrationality of delusions is the main source (if not the only source) of their ...

This is a post by Vaughan Bell and gives a summary of a new pre-printed paper called ‘ De-Rationalising Delusions ’ co-authored with Nichola Raihani and Sam Wilkinson .  Vaughan is an Associate Professor in Clinical Psychology at University College London, and also works in the Psychological Interventions Clinic for outpatients with Psychosis (PICuP), in South London and Maudsley NHS Foundation Trust. Nichola Raihani is a Professor in Evolution and Behaviour at University College London, and Sam Wilkinson is a Lecturer in Philosophy at Exeter University.   Historically, delusions have been understood as pathological beliefs that are characterised by their irrationality. Someone who believes, for example, that a camera has been implanted in their tooth and is taking pictures of their mind, would seem, on face value, to have problems in reasoning rationally about the world. This has motivated researchers to look for problems in domain-general reasoning to e...