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 aversion, the stronger pain felt from lossesWhy not: An emotional bias, arising from how a loss feels rather than from faulty reasoning.
- Anchoring, fixing on an irrelevant reference price - correct
- Regret aversion, avoiding actions that may bring regretWhy not: Also emotional: the driver is anticipated regret, which argument does little to change.
Behavioural biases come in two types. Cognitive errors come from faulty thinking or poor use of information. Emotional biases come from feelings. Anchoring means fixing on an irrelevant number, such as the price you paid, when judging value. It is a reasoning mistake, so better data and a clear process can fix it. Loss aversion (losses hurt more than equal gains please) and regret aversion (avoiding actions you might regret) come from feelings, so facts do not easily remove them.
A harder one
Why are emotional biases usually accommodated rather than corrected?
- Because they matter less than cognitive errorsWhy not: They have large effects, which is why they are worth managing.
- Because they are cured by telling clients about themWhy not: If information cured them they could be corrected; the reason for accommodating them is that it does not.
- Because logical argument rarely changes how clients feel - correct
Emotional biases come from feelings, not from lack of information, so arguing with the client rarely changes them. A plan the client abandons in a downturn fails, however good it looked on paper. It is usually more reliable to build a portfolio the client can stick with than to try to talk them out of the feeling. Moderating the bias is possible but slow. Cognitive errors, by contrast, can often be corrected with better information.
The hardest tier
An investor holds a stock only because selling would confirm a loss. Which bias, and what response?
- Anchoring; supply a better reference priceWhy not: Misidentifies it as cognitive. A better reference number does not make realising the loss any easier to face.
- Loss aversion; use a pre-agreed rule - correct
- Availability; provide more recent dataWhy not: Availability concerns which events come to mind. Nothing here depends on what the investor recalls.
Loss aversion means a loss hurts roughly twice as much as an equal gain pleases. Holding a stock only to avoid locking in a loss is this bias at work (the disposition effect). It is an emotional bias, so arguing with the investor works poorly. A rule agreed in advance works better. For example, agreeing to review and sell any holding that falls 20% below cost takes the decision away from the moment when the feeling is strongest. Anchoring and availability are cognitive errors, so they do not fit.
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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