Tell apart emotional biases and cognitive errors
The idea
Cognitive errors arise from faulty reasoning or incomplete information: conservatism, confirmation bias, anchoring, availability, framing, representativeness. Because they are errors of process, they respond to better information, structured checklists and quantitative discipline. Emotional biases arise from feeling and impulse: loss aversion, overconfidence, self-control, endowment, regret aversion, status quo. These resist correction by argument and are usually better accommodated than fought — a plan the client can actually follow beats an optimal one they abandon.
A practice question
Which is a cognitive error rather than an emotional bias?
- Loss aversionWhy not: An emotional bias, arising from how a loss feels rather than from faulty reasoning.
- Anchoring on an irrelevant reference price — correct
- Regret aversionWhy not: Also emotional: the driver is anticipated regret, which argument does not dislodge.
Anchoring is a failure of reasoning about evidence, so it can be addressed with process and data. The other two originate in feeling.
A harder one
Why are emotional biases usually accommodated rather than corrected?
- Because they have no effect on portfolio outcomesWhy not: They have large effects, which is why they are worth managing at all.
- Because regulators require accommodationWhy not: No regulation addresses this. The reason is practical: argument does not shift a feeling.
- Because argument does not reliably move them — correct
They do not respond to information, and a plan the client abandons fails regardless of its optimality. Moderating an emotional bias is possible but slow; building a portfolio the client can hold through a drawdown is more reliable than persuading them not to feel the drawdown.
The hardest tier
An investor holds a stock only because selling would confirm a loss. Which bias is this, and how should an adviser respond?
- Regret aversion, met with a pre-committed rule — correct
- Anchoring, a cognitive error, best addressed with new valuation dataWhy not: Anchoring fixes on a reference number; here the obstacle is the act of realising, which more data will not overcome.
- Availability bias, best addressed by showing historical returnsWhy not: Availability concerns what springs to mind. Nothing here turns on the vividness of a recalled event.
It is an emotional bias, best addressed by a selling rule agreed in advance rather than by argument at the moment of decision. The reluctance is about the feeling of having been wrong, not about the evidence, and a rule agreed beforehand removes the decision from the moment the emotion is strongest.
In the app: 9 practice questions on this outcome, a narrated walkthrough with diagrams, spaced review that brings it back before you forget it.
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