NISM-Series-X-B: Investment Adviser (Level 2) · Basics of Behavioural Finance

Emotional Biases in Investing: Types, Examples and Adviser Responses

Updated 11 October 2026 · Fact-checked

Emotional biases are errors in investing that come from feelings, impulses or intuition, not from faulty reasoning. Examples are loss aversion, regret aversion, endowment effect, status quo bias and self-control bias. To solve exam questions, spot the feeling behind the behaviour, match the bias, and pick the adviser response that manages it.

Understand Emotional Biases

Behavioural finance says investors are not always rational. Their mistakes fall into two groups: cognitive biases and emotional biases.

Cognitive biases come from faulty reasoning, poor memory or wrong handling of information. Better data and education often reduce them. Emotional biases come from feelings, impulses and intuition. They are harder to fix because they are not about missing facts. An adviser usually has to work around them, not argue them away.

Know these emotional biases well:

Loss aversion: a loss hurts more than an equal gain pleases. A common result is the disposition effect: the investor holds losers too long and sells winners too early.
Regret aversion: the investor avoids acting because a bad result would cause regret. After a loss, he may stay out of equity. Or he follows the crowd so the blame is shared.
Endowment effect: you value an asset more simply because you own it. A client refuses to sell inherited shares even when they do not suit his goals.
Status quo bias: you prefer to leave the portfolio as it is, even when change would help. The client never rebalances or reviews.
Self-control bias: you favour spending today over saving for the future. It shows as under-saving for retirement.

Mental accounting is a look-alike you must not file as emotional. It is a cognitive bias, an information-processing and framing error. You put money into separate mental buckets and treat each differently. A client treats a bonus or a gain as free money and takes wild risks with it, while keeping savings in low-return deposits.

Overconfidence is typically classified as a cognitive bias. It includes the illusion of control. Optimism is grouped differently by different sources, as emotional or cognitive, so read the grouping the question uses. Always read the option wording and the case given.

A useful split: endowment and status quo are about holding on. Regret aversion is about fear of a bad outcome. Self-control is about present versus future. Mental accounting is about how money is labelled, and it is cognitive.

Key formulas to remember

Cognitive vs emotional bias: Cognitive = faulty reasoning or information handling; Emotional = feeling or impulse driven; Cognitive biases are easier to reduce with information. Emotional biases are often only accommodated.
Loss aversion: Pain from a loss > pleasure from an equal gain; A common consequence is the disposition effect: holding losers too long and selling winners too early. The pain comes from the loss itself.
Endowment effect: Value placed on an asset when owned > value placed on it when not owned; Ownership alone raises the value. The reason is not performance.
Status quo bias: Preference to do nothing and keep the existing portfolio; Linked to inertia and avoiding the effort or discomfort of change.
Regret aversion: Avoid decisions that may lead to regret; Can mean staying out of markets after a loss or following the herd.
Mental accounting (cognitive bias): Money is split into mental accounts and treated as not interchangeable; This is an information-processing and framing error, not an emotional bias. It ignores that all money is fungible, so the total portfolio view is lost.
Self-control bias: Present consumption preferred over future needs; Leads to under-saving. As a consequence, the client may later take excess risk to make up the shortfall.

How to solve Emotional Biases questions

Use this method for any question that describes a client behaviour and asks you to name the bias or the adviser response.

1Read the case and underline the behaviour the client shows.
2Ask what drives it: a feeling or impulse, or a reasoning or information error. Feelings point to emotional bias.
3Find the trigger word: owns it, do nothing, fear of regret, spend now, separate buckets.
4Match the trigger to the bias: ownership to endowment, inertia to status quo, regret to regret aversion, present spending to self-control, buckets to mental accounting (a cognitive bias).
5Check the other options for look-alikes, especially cognitive biases and similar emotional ones.
6If asked for the adviser response, choose the one that accommodates the bias, such as goal-based buckets, a rebalancing rule, automatic investing or a total portfolio view.
7Confirm the final option fits the case and not just the keyword.

Quickest way: Trigger-word matching

When to use it: Use it when the question is short and you have under a minute per item.

Spot the one behaviour in the stem.
Map it: owns it = endowment; does nothing = status quo; fears regret = regret aversion; spends now = self-control; separate pots = mental accounting (cognitive).
If the stem says reasoning or information was wrong, it is cognitive. Move on.
Eliminate options that name a different bias, then mark the answer.

Common mistakes in Emotional Biases

Mixing up endowment effect and status quo bias.
Both involve not selling or not changing, so they look the same.
Fix: Endowment is about valuing an owned asset higher because it is yours. Status quo is about inertia and avoiding change, even without special attachment.
Calling mental accounting an emotional bias.
It involves how people feel about money, so students assume it is emotional.
Fix: Mental accounting is a cognitive bias, an information-processing and framing error. Money is labelled and treated differently by bucket. Do not choose it when a question asks for an emotional bias.
Thinking emotional biases can be removed by giving more information.
Students carry over the logic that works for cognitive biases.
Fix: Remember that emotional biases come from feelings. Advisers mostly adapt the advice to them.
Confusing regret aversion with loss aversion.
Both follow losses and both make clients cautious.
Fix: Loss aversion is pain from the loss itself. Regret aversion is fear of blaming oneself for a decision.
Choosing self-control bias for any risky behaviour.
The word control sounds like risk control.
Fix: Self-control bias is about favouring spending now over saving for later, which causes inadequate savings.

Worked examples

Example 1

A client inherited shares of one company from his father. They form 60% of his portfolio and no longer suit his goals, but he refuses to sell them because they feel special. Which bias is shown, and which type is it?

Show the solution

The behaviour is refusal to sell an owned asset.
The reason is attachment from ownership, not a wrong calculation.
Valuing an asset more because you own it is the endowment effect.
It is driven by feeling, so it is an emotional bias.

Answer: Endowment effect, an emotional bias. The adviser should discuss goals and diversification and accept some gradual selling.

Example 2

A client treats a ₹5,00,000 business gain as 'play money' and invests it in highly speculative stocks. His regular savings go only into fixed deposits. Which bias explains treating money differently by source, and what should the adviser do?

Show the solution

The client treats the same rupees differently based on their source.
He sees the gain as a separate bucket, so he takes more risk with it.
This is mental accounting.
The adviser should show the total portfolio and set risk by goals, not by bucket label.

Answer: Mental accounting. The adviser should present the combined portfolio and align risk with goals.

Exam tips

Learn one trigger phrase for each bias and match it fast.
Expect questions that ask for the difference between cognitive and emotional biases, so remember that emotional biases are harder to correct.
Watch for the adviser response being asked, not just the bias name.
Remember that mental accounting and overconfidence are typically classed as cognitive biases. Do not pick them when the question asks for an emotional bias.
With negative marking of 25% of the question marks, a blind guess among four options has zero expected value. Eliminating even one option makes guessing favourable.

Practice questions from Basics of Behavioural Finance

Emotional Biases in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

CFA Level IEmotional Biases: Self-Control, Status Quo, Endowment, Regret

Emotional Biases: frequently asked questions

What is the difference between cognitive and emotional biases?

Cognitive biases come from faulty reasoning or information processing, and they can often be reduced with better information. Emotional biases come from feelings and impulses, and they are harder to correct. Advisers often adapt the advice to them.

What is an example of the endowment effect?

A client keeps inherited shares that do not fit his goals because he values them more as his own. The attachment comes from ownership, not from the stock's prospects.

How is status quo bias different from the endowment effect?

Status quo bias is a preference for leaving things unchanged, even when change would help. The endowment effect is valuing an owned asset more highly. A client who never reviews his portfolio shows status quo bias.

Which emotional biases should I know for NISM X-B?

Know loss aversion, regret aversion, endowment effect, status quo bias and self-control bias as emotional biases. Mental accounting and overconfidence are typically classed as cognitive biases, so learn them as look-alikes. Learn the trigger, an example and the adviser response for each.