What makes a belief delusional?

In I. McCarthy, K. Sellevold & O. Smith (eds.), Cognitive Confusions. Legenda. pp. 37-51 (2016)
  Copy   BIBTEX


In philosophy, psychiatry, and cognitive science, definitions of clinical delusions are not based on the mechanisms responsible for the formation of delusions. Some of the defining features of delusions are epistemic and focus on whether delusions are true, justified, or rational, as in the definition of delusions as fixed beliefs that are badly supported by evidence). Other defining features of delusions are psychological and they focus on whether delusions are harmful, as in the definition of delusions as beliefs that disrupt good functioning. Even if the epistemic features go some way towards capturing what otherwise different instances of clinical delusions have in common, they do not succeed in distinguishing delusions as a clinical phenomenon from everyday irrational beliefs. Focusing on the psychological features is a more promising way to mark the difference between clinical and non-clinical irrational beliefs, but there is wide variability in the extent to which delusions are psychologically harmful, and some everyday irrational beliefs can affect functioning in similarly negative ways. In this chapter we consider three types of belief that share similar epistemic features and exhibit variation with respect to how psychologically harmful they are: (1) delusions of thought insertion, (2) alien abduction beliefs, and (3) self-enhancing beliefs. In the light of the similarities and differences between these cases, we highlight the difficulty in providing an answer to what makes an irrational belief delusional.



External links

Setup an account with your affiliations in order to access resources via your University's proxy server

Through your library

Similar books and articles

Shaking the bedrock.Lisa Bortolotti - 2011 - Philosophy Psychiatry Psychology 18 (1):77-87.
Are the Deluded Believers? Are Philosophers Among the Deluded?George Graham - 2010 - Philosophy, Psychiatry, and Psychology 17 (4):337-339.
Delusions and Other Irrational Beliefs.Lisa Bortolotti - 2009 - Oxford University Press. Edited by K. W. M. Fulford, John Sadler, Stanghellini Z., Morris Giovanni, Bortolotti Katherine, Broome Lisa & Matthew.
The Epistemic Innocence of Motivated Delusions.Lisa Bortolotti - 2015 - Consciousness and Cognition (33):490-499.
From the internal lexicon to delusional belief.Max Coltheart - 2014 - Avant: Trends in Interdisciplinary Studies (3/2014):19-29.
The Folk Epistemology of Delusions.Dominic Murphy - 2011 - Neuroethics 5 (1):19-22.


Added to PP

762 (#21,045)

6 months
147 (#24,097)

Historical graph of downloads
How can I increase my downloads?

Author Profiles

Ema Sullivan-Bissett
University of Birmingham
Lisa Bortolotti
University of Birmingham

Citations of this work

No citations found.

Add more citations

References found in this work

The evolution of misbelief.Ryan McKay & Daniel Dennett - 2009 - Behavioral and Brain Sciences 32 (6):493–510; discussion 510–61.
Spiritual Experience and Psychopathology.K. W. M. Fulford & Mike Jackson - 1997 - Philosophy, Psychiatry, and Psychology 4 (1):41-65.
On Thought Insertion.Rachel Gunn - 2016 - Review of Philosophy and Psychology 7 (3):559-575.

Add more references