Home / Concept of the Week / Motivated reasoning
Concept of the Week · Episode 9
Judging an argument by whether it delivers the answer you already wanted. The conclusion comes first and the reasoning is assembled afterwards to reach it, which is why it feels like thinking rather than like wanting.
Explained by Professor Peter Kinderman, clinical psychologist · First published 15 September 2026 · Updated 25 September 2026
The modern account is Ziva Kunda's 1990 paper The Case for Motivated Reasoning, which pulled together decades of findings showing that people reason differently depending on which conclusion suits them. It sits close to Leon Festinger's work on cognitive dissonance from 1957.
Motivated reasoning. You judge an argument by whether it delivers the conclusion you already wanted, which is why it feels like thinking rather than like wanting. Peter's version is a list of pairs, and the list is the argument: his generous political donation is a bid to improve the life of the nation, hers is shameless self promotion. His climate pledge is aspirational, hers is a downright lie. This product is worth the money because I like to pay for quality, that one is a waste of money. Nothing in those pairs is a claim about evidence. They are the same act described twice, and the description follows from who did it. He ties it to cognitive dissonance: you look at things through eyes which are biased, in order to avoid contradicting yourself.
Peter's version on the show is a list, and the list is the argument. His well motivated and generous political donation is a bid to improve the life of the nation. Hers is shameless self promotion. His promise on climate change is an aspirational pledge. Hers is a downright lie. This product is worth the money because it is high quality and I like to pay for quality. That one is a waste of money. Nothing in those pairs is a claim about evidence. They are the same act described twice, and the description follows from who did it. The week's three headlines are three chances to catch yourself at it: 72 million pounds to Reform UK from two men who say they want nothing back, an assisted dying bill that people support or oppose for reasons that rarely move, and an import ban that reads as principle or as betrayal depending on where you were standing beforehand.
Hear it in context
Reform's £72m, assisted dying and Miliband's settlement ban
Two crypto billionaires hand Reform UK 72 million pounds in two days and say they want nothing back. Peter does not believe them, and the reason why turns into the Concept of the Week.
They overlap and they are not the same. Confirmation bias is about what you notice and remember: you find the evidence that fits. Motivated reasoning is the broader machinery, and it covers how hard you look. When a conclusion suits you, you accept thin evidence and stop. When it does not, you interrogate the method, the sample and the funding until you find something wrong. The effort is real. It is just unevenly spent.
Peter makes the link on the show: you look at things through eyes which are biased, in order to avoid contradicting yourself. Dissonance is the discomfort of holding two things that do not sit together. Motivated reasoning is one of the ways out of it, because rewriting the argument is easier than abandoning the position or admitting you were wrong.
Peter thinks you can, and the Triple T is his method. Argue the case from the other side, properly, the way its best advocate would. Ask what you would say if you wanted the other outcome. It does not make you neutral, and it is not meant to. It makes the reasoning visible, which is the part that normally stays hidden.
The primary literature behind the idea, for anyone who wants to check it. Also on Wikipedia.
Kinderman, P. (2026). Motivated reasoning. Concept of the Week, Experience: Analysing Newsmakers, episode 9, with Hilary Jeffs. https://www.experiencepodco.com/concepts/motivated-reasoning.html
Mirror neurons · Authenticity · Confirmation bias · Attribution theory · INUS conditions · Variable ratio reinforcement · The illusory truth effect · Role exit · The bystander effect
Concept of the Week is a regular feature of Experience: Analysing Newsmakers, the weekly podcast in which clinical psychologist Professor Peter Kinderman and communications expert Hilary Jeffs take the news apart to see what is driving it. Peter picks a psychological idea most of us have half-remembered wrong and explains what it actually shows. New episodes every Tuesday. Where to listen.