Category Archives: Psychology

Critical Thinking 6: Fallacies and Cognitive Biases

There are a great many different fallacies and a great many different cognitive biases: probably enough to keep me going for years if I was to discuss one each week on this blog series. What I want to do here, though, is just to consider the question of what fallacies and cognitive biases actually are, and how they relate to each other. This is a contentious enough subject in itself.

A fallacy is normally described as a flaw in reasoning, or a type of mistake whereby people draw incorrect conclusions from the reasons they start with. This would be correct when applied to formal fallacies, but I think incorrect when applied to the more interesting and practically relevant informal fallacies. Here’s a simple example of a formal fallacy (one known as affirming the consequent):

Good Catholics attend mass regularly.

Bridget attends mass regularly.

Therefore Bridget is a good Catholic.

You might think this was quite a reasonable conclusion to draw from the reasons given. However, it is not a necessary conclusion. You don’t have to be a good Catholic to attend mass regularly, and it’s quite possible that Bridget is an uncertain enquirer, or a bad Catholic trying to keep up appearances, or a Religious Studies scholar doing field research into Catholicism. A conclusion that is not necessarily true is not valid, and thus a formal fallacy.

However, it may be reassuring to reflect that the vast majority of arguments we actually use in practice are formal fallacies. Many of them are inductive (see Critical Thinking 2), and even those that are not inductive may be deduction (like the example above) of a kind that is formally invalid but actually reasonably enough most of the time. Formal fallacies are thus of little interest from the practical point of view. Informal fallacies, on the other hand, tell us much more about unhelpful thinking, even though they may actually be formally valid in some instances.

Informal fallacies are just unjustified assumptions: for example, the assumption that some objectionable personal attribute in the arguer refutes their argument (ad hominem); or that there are only two choices in a situation where there is actually a spectrum of options (false dichotomy); or the assumption that using your conclusion as a reason provides an informative argument (begging the question). What is objectionable about arguments involving these moves often depends on the circumstances, and it requires thoughtful judgement rather than just applying black-and-white rules. But that’s also the indication that these fallacies actually matter in everyday life.

Informal fallacies are unjustified assumptions identified by philosophers. The only genuine difference between informal fallacies and cognitive biases, as far as I can see, is that cognitive biases are unjustified assumptions identified by psychologists and often tested through experiment. Psychologists may explain our tendency to make these particular kinds of unhelpful assumptions in terms of the physical, social and evolutionary conditions we emerge from, but in the end these kinds of explanations are less central than the identification of the bias itself. Usually cognitive biases can be ‘translated’ into fallacies and vice-versa. For example, the in-group bias (tendency to favour the judgements of your own group) is equivalent to the irrelevant appeal to the authority of the group (or its leaders), irrelevant appeal to popularity within the group, or irrelevant appeal to tradition in the group, all of which are recognised informal fallacies. The outcome bias, whereby we judge a past decision by its outcome rather than its quality at the time, involves an irrelevant appeal to consequences.

Philosophers and psychologists thus both have very useful things to tell us about what sorts of mistakes we are likely to make in our thinking, and insofar as their different contributions are practically useful, they tend to converge. I would also argue that this convergence of useful theory relates closely to the avoidance of metaphysics (see cognitive biases page). Despite the widespread idea that fallacies are faults in reasoning, they really have nothing to do with reasoning in the strict sense of logical validity. They are all about the unhelpful assumptions we often tend to make.

Exercise

See if you can identify  and describe the type of unhelpful assumptions being made in these video clips. You don’t necessarily need to know the formal titles of the fallacies involved to identify why they are a problem.

1.

3.

4.

The rider and the elephant

Can we actually change our moral responses? Much debate about moral issues is fruitless because, however well-justified the reasons given for one position or another, they make no difference to our position. Rather than changing our position in response to strong evidence or argument seen overall, we tend to focus on minor weaknesses in views we intuitively oppose (or minor strengths in views we support) and blow them out of proportion.  I’ve recently been reading Jonathan Haidt, who encapsulates this situation in the image of the rider and the elephant. Elephant and rider Dennis JarvisThe rider thinks he’s in charge, but most of the time he’s just pretending to direct an elephant that is going where it wants to go. He gives lots of psychological evidence for the extent to which we rationalise things we’ve already judged, rather than making decisions on the basis of reasoning. This is the whole field of cognitive bias. For example, people experiencing a bad smell are more likely to make negative judgements, and judges grant fewer parole applications when they’re tired in the afternoon than they do when they’re fresh in the morning.

However, too many people draw a cheap moral determinism out of this. That’s a determinism expressed by Hume in his famous line “reason is, and ought only to be, the slave of the passions, and can never pretend to any other office than to serve and obey them.” Fortunately Haidt, who’s a professor of moral psychology at the University of Virginia, recognises that Hume’s position is over-stated, and that it is based on a simplistic false dichotomy between reason and emotion. Just because the rider tends to over-estimate his influence on the elephant, doesn’t mean he has no influence at all. Rather, someone controlling a beast with as much bulk and momentum as an elephant needs to develop skills to encourage it in one direction rather than another, and to set up the conditions that will encourage it to go one way rather than another rather than just telling it and expecting it to obey instantaneously. Nor are the rider and the elephant  to be equated to “reason” and “emotion”: each uses reasoning, and each has motives and starting points for reasoning, making a complex mixture of the two in both rider and elephant. The elephant would be better described as an elephant of intuition and the rider as conscious awareness.

Haidt, like most scientific or academic commentators on this kind of issue, also makes certain questionable assumptions. One of these is that of the essential unity of the rider and of the elephant (particularly the elephant). If it was true that the elephant definitely wanted to do one thing, and the rider another, it would be pretty much impossible to steer the elephant in any sense. But this is an over-simplification of the physical intuitions we get from our bodies. We may intuitively judge one way, but there is also an intuitive sympathy to some extent for the opposing approach. Perhaps we should not think of the rider so much as astride one elephant, as leading a herd of them. To lead the herd you find the elephant who is pre-disposed to act in the most objective way, encourage it, and (because elephants are herd animals) the rest are likely to follow.

That’s where integrative practice comes in. In the over-specialised world of academia, it seems to often to be the case that those engaged in crucial and ground-breaking research in psychology (such as, say, Daniel Kahneman and Jonathan Haidt) have evidently never experienced meditation, and completely ignore the potential of meditation and of other integrative practices to modify our responses. There are, of course, other academics investigating meditation, but these usually show little interest in ethics or judgement. Cheap determinism seems to rule, for the most part, because over-specialised people don’t join up the evidence in different quarters, and the incentive system could hardly be better geared to discourage synthetic thinking.

In meditation, one can become more aware of that variety of possible responses. Meditation is, in effect, a close scrutiny of the elephant on the part of the rider, from a sympathetic inside viewpoint. The better he knows the elephant, the more he can skilfully manage it. He can rein in the elephant a little so it has more time to listen to the other members of the herd. He can make it more aware of ambiguity using humour, art or poetry. He can give the elephant a wider range of options by educating its sensibility. He can help the elephant  become more aware of the rider, and cultivate its sympathy for the rider.

That doesn’t mean that the elephant will ever cease to go where it wants to go. The question is just what it means to ‘want’. Wanting is never simple. We have lots of wants, and it is the integration of those wants that helps us steer the elephant in a more acceptable direction – indeed that helps us see what that better direction is. The rider really needs the elephant, and no merely abstract morality can be justified that does not take that elephant into account.

 

Picture: Rider and elephant by Dennis Jarvis (Wikimedia Commons)

The MWS Podcast: Episode 12, Paul Gilbert

In this episode Paul Gilbert, a clinical psychologist and author of the Compassionate Mind talks to us about compassion and how he came to develop Compassion Focused Therapy. Among the topics discussed are its practical applications, Jungian archetypes, the role of values, the Middle Way, mindfulness and the complexity of forgiveness.

For a brief overview of Compassion Focused Therapy see the following paper. If you would like to find out more about Paul’s work, his books, Compassionate Mind Training etc follow this link to the Compassionate Mind Foundation.


MWS Podcast 12: Paul Gilbert as audio only:
Download audio: MWS_Podcast_12_Paul_Gilbert

Previous podcasts:

Episode 11: Monica Garvey on Family Mediation
Episode 10: Emilie Åberg on horticultural therapy, agnosticism, the Quakers and awe.
Episode 9: T’ai Chi instructor John Bolwell gives an overview of this popular martial art.
Episode 8: Peter Goble on his career as a nurse and his work as a Buddhist Chaplain.
Episode 7: The author Stephen Batchelor on his work with photography and collage.
Episode 6: Iain McGilchrist, author of the Master and his Emissary.
Episode 5: Julian Adkins on introducing MWP to his meditation group in Edinburgh
Episode 4: Daren Dewitt on Nonviolent communiction.
Episode 3: Vidyamala Burch on her new book “Mindfulness for Health”.
Episode 2: Norma Smith on why she joined the society, art, agnosticism and metaphor.
Episode 1 : Robert M. Ellis on the skill of critical thinking.

The MWS Podcast: Episode 10, Emilie Åberg

In this member profile Emilie Åberg gives us a bit of background about her life, why she’s studying psychology and her plan to be a horticultural therapist, her views on agnosticism, the Middle Way, integration, the Quakers and dogmatism. She also talks about awe and why she feels the cultivation of this emotion is an important factor in her life.


MWS Podcast 10: Emilie Åberg as audio only:
Download audio: MWS_Podcast_10_Emilie_Åberg

Previous podcasts:

Episode 9: T’ai Chi instructor John Bolwell gives an overview of this popular martial art.
Episode 8: Peter Goble on his career as a nurse and his work as a Buddhist Chaplain.
Episode 7: The author Stephen Batchelor on his work with photography and collage.
Episode 6: Iain McGilchrist, author of the Master and his Emissary.
Episode 5: Julian Adkins on introducing MWP to his meditation group in Edinburgh
Episode 4: Daren Dewitt on Nonviolent communiction.
Episode 3: Vidyamala Burch on her new book “Mindfulness for Health”.
Episode 2: Norma Smith on why she joined the society, art, agnosticism and metaphor.
Episode 1 : Robert M. Ellis on the skill of critical thinking.