NISM-Series-X-B: Investment Adviser (Level 2) · Behavioural Finance in Practice

Emotional Biases and Investor Behaviour for NISM Investment Adviser Exam

Updated 11 October 2026 · Fact-checked

Emotional biases are errors in investing that come from feelings, not from faulty reasoning. Key ones are loss aversion, regret aversion, endowment effect and status quo bias. To solve a question, match the client's behaviour to the bias, then choose the response that moderates it. Advisers usually adapt to these biases, not try to correct them.

Understand Emotional Biases and Investor Behaviour

Investors do not always act like the rational people in traditional finance. Their decisions are shaped by feelings such as fear, pride, regret and comfort. Emotional biases are the errors that arise from these feelings. They come from impulse or intuition, not from wrong calculations or poor information.

This is the key difference from cognitive biases. A cognitive bias comes from faulty reasoning, memory or information processing, so better data and education can often reduce it. An emotional bias comes from feeling, so it is harder to fix. Education helps less. In practice, an adviser often has to adapt the advice to the bias instead of trying to remove it.

The main emotional biases to know are:

Loss aversion: a loss hurts more than a gain of the same size pleases. Investors hold losing stocks too long, hoping to break even, and may sell winners too early to lock in a gain.
Regret aversion: avoiding action because you fear regretting a bad result. An investor may stay in cash after a fall, or buy only what everyone else owns, so that a loss feels less personal.
Endowment effect: valuing an asset more just because you own it. A client may refuse to sell inherited shares even when they are badly suited to the goals.
Status quo bias: preferring to leave things as they are, even when a change would help. A client keeps an old portfolio unchanged for years.

Other emotional biases include overconfidence and self-control bias. Overconfidence is often classed as emotional in the behavioural finance framework, though some texts treat it as cognitive. Read the question wording to see which view it takes.

The effect on portfolios is clear. Biased clients hold concentrated positions, avoid rebalancing, trade at the wrong time, and take too little or too much risk. Your job is to spot the bias, explain it gently, and build a plan the client can stick to.

Key formulas to remember

Loss aversion: Pain of a loss > Pleasure of an equal gain; Linked to prospect theory. It explains holding losers and selling winners early (the disposition effect).
Regret aversion: Fear of regret → avoid or delay action, or follow the crowd; The investor wants to avoid the pain of a wrong decision, so may not act at all.
Endowment effect: Value placed on owned asset > Value placed on same asset if not owned; Ownership alone raises perceived value. It is not about the asset's merits.
Status quo bias: Default option preferred → no change; Inertia. The client sticks with the existing portfolio even if it no longer suits.
Cognitive vs emotional bias: Cognitive: flawed reasoning → correct it. Emotional: feeling-driven → adapt to it; A common exam distinction on how the adviser should respond.

How to solve Emotional Biases and Investor Behaviour questions

Use this method for any scenario or definition question on emotional biases.

1Read the client's behaviour in the question and ignore the extra detail.
2Ask: is the driver a feeling (fear, regret, attachment, comfort) or a reasoning error? Feeling means emotional bias.
3Match the trigger: loss hurting more means loss aversion; fear of a bad outcome causing inaction means regret aversion; attachment to owned assets means endowment effect; preferring no change means status quo bias.
4Check the key words in each option, such as 'because they own it' or 'avoids making a change'.
5Remove options that describe a cognitive bias (anchoring, confirmation, hindsight) when the scenario is about feeling.
6If the question asks for the adviser's response, choose adapting the plan, goal-based framing, or gradual change over simply giving more data.
7Pick the option that fits all the facts, then re-read the stem once.

Quickest way: Trigger-word matching

When to use it: When you have under a minute per MCQ and the scenario clearly shows one behaviour.

Underline the trigger: 'losses hurt', 'fear of regret', 'because it is mine', 'no change'.
Map it: losses means loss aversion; regret means regret aversion; mine means endowment; no change means status quo.
For 'how should the adviser respond', prefer adapt for emotional and educate for cognitive.
If two options look alike, choose the one whose cause matches the stem, not just the outcome.

Common mistakes in Emotional Biases and Investor Behaviour

Confusing endowment effect with status quo bias.
Both lead to holding on to existing assets.
Fix: Endowment is about higher value because of ownership. Status quo is about preferring no change or effort. Look for 'values more' versus 'prefers to leave as is'.
Treating loss aversion as plain risk aversion.
Both involve disliking losses.
Fix: Risk aversion is a general dislike of uncertainty. Loss aversion is the asymmetry that losses weigh more than equal gains, and it can cause holding losers.
Calling every bias in the chapter cognitive or every one emotional.
Students memorise names without the category.
Fix: Cognitive biases come from faulty reasoning. Emotional biases come from feelings. Learn each name with its category.
Saying the adviser should correct emotional biases with more data.
It sounds logical and professional.
Fix: Emotional biases are hard to remove by information. The usual guidance is to moderate the effect or adapt the advice to the client's behaviour.
Mixing regret aversion with hindsight bias.
Both talk about looking back at outcomes.
Fix: Regret aversion is fear of future regret that changes today's action. Hindsight bias is believing after the event that it was predictable, and it is cognitive.

Worked examples

Example 1

A client bought a stock at ₹400. It now trades at ₹250. Fundamentals have weakened, but the client refuses to sell and says, 'I will sell once it gets back to ₹400.' Which bias best explains this?

A. Endowment effect
B. Loss aversion
C. Status quo bias
D. Hindsight bias

Show the solution

Identify the behaviour: the client will not realise a loss and waits to break even.
Test the feeling: the pain of booking a loss is driving the decision, so it is emotional.
Match: reluctance to realise a loss and holding a loser is the classic result of loss aversion.
Check other options: endowment is about valuing the asset more because owned, and the client talks about the price, not attachment. Status quo is about general inertia. Hindsight is cognitive and is about past events.

Answer: B. Loss aversion

Example 2

A client inherited a large block of shares of a single company from her father. The company is in a declining industry and the shares are 70% of her portfolio. She says, 'These shares are worth far more than their market price to me.' Which bias is most directly shown, and how should the adviser respond?

A. Regret aversion; give her more market data and insist she sells
B. Endowment effect; accept the attachment and agree a gradual, goal-based reduction of the position
C. Status quo bias; ignore the concentration since it is inherited
D. Loss aversion; wait until the price rises before any advice

Show the solution

Spot the trigger: she values the shares above market price because they are hers and inherited.
This is the endowment effect, an emotional bias.
Because it is emotional, forcing data on her is less likely to work. The adviser should adapt: acknowledge the attachment, link the change to her goals, and reduce the position in stages.
Check options: A names the wrong bias and a forceful approach. C ignores a serious concentration risk. D names the wrong bias and delays action.

Answer: B. Endowment effect; accept the attachment and agree a gradual, goal-based reduction of the position

Exam tips

Learn each bias with its one-line trigger and its portfolio effect. Questions are mostly scenario matching.
Know the category of each bias. Questions often ask which are cognitive and which are emotional.
For the adviser's response, remember that emotional biases are usually adapted to and cognitive biases are usually corrected through information.
Watch for near-twin pairs: endowment effect versus status quo, and loss aversion versus risk aversion.
On papers with negative marking, skip a scenario only if two biases fit equally. Most stems contain one clear trigger.

Practice questions from Behavioural Finance in Practice

Emotional Biases and Investor Behaviour 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 and Investor Behaviour: frequently asked questions

What is the difference between emotional and cognitive biases?

Emotional biases come from feelings, impulses or intuition. Cognitive biases come from faulty reasoning, memory or processing of information. Cognitive biases can often be reduced with better information, while emotional biases are harder to fix.

What are examples of loss aversion and regret aversion?

Loss aversion: a client holds a falling stock for months to avoid booking a loss. Regret aversion: a client stays in cash after a market fall because they fear buying and seeing prices drop further.

How should an adviser deal with emotional biases in clients?

Spot the bias first, then adapt the advice to it instead of trying to remove it. Tools include goal-based framing, gradual changes and a documented plan the client agrees to. Education still helps, but it works less well for emotional biases.

How is endowment effect different from status quo bias?

Endowment effect means you value an asset more because you own it. Status quo bias means you prefer leaving things unchanged, even without any special attachment to the asset.