Sometimes people are just plain wrong. Take the decision of the UK and US governments to invade Iraq because they believed that Saddam had weapons of mass destruction. Whatever the arguments for and against the action that was taken, the justification was wrong. At the moment there is an enquiry in the UK into quite how this came about. Anyone who is aware of the work of the psychologist Irving Janis on Groupthink will be able to understand the process of self-delusion and self-justification that took place (and continues to take place). Some of the protagonists, rather than acknowledge their mistake, simply move the argument on: the UK Prime Minister at the time, Tony Blair, has said he would have invaded Iraq anyway, for some other reasons he can think of. Leaving aside the issues of group psychology what, if anything, does this reveal about consumer behaviour? And what does […]

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