Skip to main content

Belief, Quasi-Belief, and Obsessive-Compulsive Disorder


This post is by Robert Noggle (pictured above), Professor of Philosophy at Central Michigan University. Robert is interested in psychological conditions that appear to undermine or threaten personal autonomy. His other main interests are in normative and applied ethics. In this post he summarises his recent paper ‘Belief, Quasi-Belief, and Obsessive-Compulsive Disorder’, published in Philosophical Psychology. 

Obsessive-Compulsive Disorder (OCD) is fascinating because it can lead to a radical disconnect between professed belief on the one hand, and affect, motivation, and behaviour on the other. Someone with OCD might sincerely profess her disbelief in the idea, say, that flipping a light switch poses a significant fire hazard if you do not do it just right. Yet such a person might also feel anxiety when flipping a switch, and a strong urge to flip it repeatedly to get it just right.

Of course, psychologists face the puzzle of how people get into such a state, and how best to help them get out of it. But there is a philosophical puzzle here about how to describe the mental state of such a person. Does she believe that flipping light switches is a dangerous activity, or not? Her verbal reports will typically suggest that she does not believe in the hazards of improperly flipping switches. Yet her anxiety and urge to check and re-flip suggest just the opposite. 

It is tempting to suggest that such a person moves back and forth between believing and not believing in the danger of improperly flipped switches. But this suggestion does not pan out when we look at what goes on in one of the most common and effective treatments for OCD, a treatment called Exposure and Response Prevention, or ERP. If our compulsive switch-flipper were to undergo ERP, she would likely be asked to flip a switch once and then leave it alone.

During the early phases of treatment, we would expect her to experience anxiety and a strong urge to re-flip or check the switch. But after repeated treatments, the anxiety and compulsion would likely subside. Here is the puzzling part: During ERP, the patient appears to have contradictory beliefs at the very same instant. The fact that she submits to the treatment at all suggests that she does not believe that improperly flipped switches pose a danger. Yet her anxiety and urges to check or re-flip (which will likely be quite strong at the early stages of ERP) suggest that, at the very same time, she does believe in the danger of improperly flipped switches. Hence, we cannot explain the mental state of an OCD patient during ERP in terms of changing beliefs. 


So what is the solution to this puzzle? My suggestion appeals to a distinction between 'functionally normal' beliefs on the one hand, and 'quasi-beliefs' on the other. A functionally normal belief that P has the characteristics we normally attribute to beliefs: It is at least somewhat vulnerable to direct evidence against P; the agent will normally consciously affirm P (at least to herself); and the agent will tend to employ P as a premise in conscious practical and theoretical reasoning in a wide variety of relevant contexts. By contrast, a quasi-belief that P is extremely resistant to direct evidence of the falsity of P, and the agent may quasi-believe that P despite having no disposition to affirm that P or to use P in any conscious practical or theoretical reasoning. 

The solution I offer to the puzzle of OCD, then, is as follows: At least some cases of OCD are best understood as cases where a person has (1) a quasi-belief that P, and (2) a functionally normal belief that not-P. The quasi-belief that P causes affect and motivation that are at odds with what we would expect given her functionally normal belief that not-P. Our compulsive switch-flipper has a quasi-belief that improperly flipped switches pose a significant fire hazard, but she has a functionally normal belief that no such hazard exists.

If this solution to the puzzle of OCD is correct, then it adds to a growing body of evidence that a lot of human behaviour is driven by mental states that do not conform to the standard Humean belief-desire-action model. Mental states like the ones I am calling quasi-beliefs are sometimes invoked to explain recalcitrant emotions, and it is very tempting to invoke them to explain phobias.

However, unlike phobias, the behavioural component of OCD is far more complicated than simple avoidance behaviour. This makes OCD a better form of evidence for the claim that belief-behaviour mismatches are at least sometimes caused by mental states that have propositional content, as opposed, say, to the non-propositional 'aliefs' that Tamar Gendler introduces to explain simpler forms of belief-behaviour mismatch. In short, OCD seems to provide pretty good evidence for quasi-beliefs to which it is appropriate to attribute propositional content.

Popular posts from this blog

Delusions in the DSM 5

This post is by Lisa Bortolotti. How has the definition of delusions changed in the DSM 5? Here are some first impressions. In the DSM-IV (Glossary) delusions were defined as follows: Delusion. A false belief based on incorrect inference about external reality that is firmly sustained despite what almost everyone else believes and despite what constitutes incontrovertible and obvious proof or evidence to the contrary. The belief is not one ordinarily accepted by other members of the person's culture or subculture (e.g., it is not an article of religious faith). When a false belief involves a value judgment, it is regarded as a delusion only when the judgment is so extreme as to defy credibility.

Rationalization: Why your intelligence, vigilance and expertise probably don't protect you

Today's post is by Jonathan Ellis , Associate Professor of Philosophy and Director of the Center for Public Philosophy at the University of California, Santa Cruz, and Eric Schwitzgebel , Professor of Philosophy at the University of California, Riverside. This is the first in a two-part contribution on their paper "Rationalization in Moral and Philosophical thought" in Moral Inferences , eds. J. F. Bonnefon and B. Trémolière (Psychology Press, 2017). We’ve all been there. You’re arguing with someone – about politics, or a policy at work, or about whose turn it is to do the dishes – and they keep finding all kinds of self-serving justifications for their view. When one of their arguments is defeated, rather than rethinking their position they just leap to another argument, then maybe another. They’re rationalizing –coming up with convenient defenses for what they want to believe, rather than responding even-handedly to the points you're making. Yo

A co-citation analysis of cross-disciplinarity in the empirically-informed philosophy of mind

Today's post is by  Karen Yan (National Yang Ming Chiao Tung University) on her recent paper (co-authored with Chuan-Ya Liao), " A co-citation analysis of cross-disciplinarity in the empirically-informed philosophy of mind " ( Synthese 2023). Karen Yan What drives us to write this paper is our curiosity about what it means when philosophers of mind claim their works are informed by empirical evidence and how to assess this quality of empirically-informedness. Building on Knobe’s (2015) quantitative metaphilosophical analyses of empirically-informed philosophy of mind (EIPM), we investigated further how empirically-informed philosophers rely on empirical research and what metaphilosophical lessons to draw from our empirical results.  We utilize scientometric tools and categorization analysis to provide an empirically reliable description of EIPM. Our methodological novelty lies in integrating the co-citation analysis tool with the conceptual resources from the philosoph