Behavioral Finance - Class 4 (Emotional bias)

What are Emotional Biases?

Biases that stem from impulse or intuition — especially personal and sometimes unreasoned judgments. They arise spontaneously rather than through conscious effort and are difficult to control. Unlike cognitive biases, they can typically only be recognized and adapted to, not eliminated.

How do you handle an Emotional Bias?

You adapt/accommodate to it: accept it and make decisions that recognize and adjust for it, rather than trying to eliminate it.

What is Loss Aversion?

An emotional bias where investors are more concerned with changes in wealth than final wealth, and place greater negative value on a loss than on a gain of the same amount. Psychologically, a potential loss is on average twice as powerful as an equivalent gain.

What does Prospect Theory say about losses vs gains?

People feel a stronger impulse to avoid losses than to acquire gains. Investors are risk-averse in the domain of gains (prefer certainty) and risk-seeking in the domain of losses (prefer to gamble rather than accept a certain loss).

What are the consequences of Loss Aversion?

1. Prevents selling unprofitable investments (no prospect of turnaround). 2. Excessive focus on risk avoidance when evaluating gains. 3. Hastening to lock in profits fearing market reversal. 4. Rationalizing unrealized losses as 'only a paper loss'.

What are the implications of Loss Aversion for investors?

1. Holding losing investments too long ('get-even-itis'). 2. Selling winners too early (limits upside, leads to overtrading). 3. Unknowingly taking on more risk by not switching to better investments. 4. Suboptimal portfolio returns.

How do you mitigate Loss Aversion?

1. Use stop-loss rules. 2. Use price appreciation rules tied to fundamentals. 3. Know statistical properties of assets (std dev, expected returns). 4. Educate on diversification and asset allocation. 5. Perform fundamental analysis. 6. Understand tax implications of locking gains vs. losses.

What are bias proxies for Loss Aversion?

1. VIX (implied volatility) correlated with investor buy/sell patterns. 2. Volume/open positions in beaten-down stocks vs. performing stocks.

What is Overconfidence Bias?

People overweight their intuitive reasoning, judgments, and cognitive abilities. They overestimate both their predictive abilities and the precision of their information, attributing a higher probability to events than is warranted.

What are the two forms of Overconfidence?

1. Prediction overconfidence: confidence intervals on investment predictions are too narrow. 2. Certainty overconfidence: excessive confidence in everyday judgments that carries over into investment decisions.

What are the implications of Overconfidence for investors?

1. Overestimating ability to evaluate companies. 2. Excessive trading due to belief in special knowledge, lowering returns. 3. Underestimating downside risks. 4. Holding underdiversified portfolios, taking on more risk without appropriate risk tolerance.

How do you mitigate Overconfidence?

1. Review past trading records and calculate actual performance. 2. Demonstrate detrimental effects of excessive trading. 3. Point to academic studies showing market volatility. 4. Remind that many once-great companies have failed.

What are bias proxies for Overconfidence?

1. Momentum factor (trusting trends will continue). 2. Retail investor signaled volume (high retail volume = more overconfidence). 3. Stock turnover (higher turnover strongly linked to overconfidence).

What is Self-Control Bias?

A human behavioral tendency that causes people to consume today at the expense of saving for tomorrow. It is a conflict between overarching desires (e.g. saving for retirement) and the inability, due to lack of discipline, to act in pursuit of those desires.

What is the psychological explanation for Self-Control Bias?

When faced with immediate vs. long-term rewards, humans prefer immediate satisfaction. We trade off lower satisfaction now against higher satisfaction in the future.

What are the consequences of Self-Control Bias?

1. Poor ability to accumulate savings or follow a long-term savings plan. 2. Inability to follow the life-cycle hypothesis (maintain living standards in retirement). 3. Treating income and wealth as separate mental accounts.

What are the implications of Self-Control Bias for investors?

1. Spending more today at the expense of saving for tomorrow. 2. Failing to plan for retirement. 3. Asset-allocation imbalances — preferring income-producing assets (high dividend stocks) due to a 'spend today' mentality. 4. Ignoring compounding and dollar cost averaging.

How do you mitigate Self-Control Bias?

1. Set aside consistent savings amounts regularly. 2. Follow a structured investment strategy (e.g. Age-Based Allocation: % stocks = 100 - age). 3. Emphasize importance of balanced asset allocation. 4. Understand the impact of compounding and dollar cost averaging.

What is the key literature reference for Self-Control Bias?

Shefrin and Thaler, 1988. 'The Behavioral Life-Cycle Hypothesis'

What is Status Quo Bias?

The tendency to choose options that keep things the same rather than changing, because it feels easier or more comfortable. People prefer the current or default option even if nothing has changed to justify that preference.

What explains Status Quo Bias?

1. Change requires effort and commitment — people prefer staying in their current situation. 2. Evolutionary 'save energy' mode — avoid unnecessary risks and changes unless there's a clear benefit. 3. It implies a more intense anchoring effect to the current state.

What are the consequences of Status Quo Bias?

1. Holding inherited, concentrated stock positions. 2. Greater resistance to change when tradition justifies the status quo ('it has always been this way').

What are the implications of Status Quo Bias for investors?

1. Holding investments inappropriate to their risk/return profile (by doing nothing). 2. Combining with loss aversion to avoid realizing potential losses. 3. Holding securities merely because they feel familiar or emotionally comfortable. 4. Holding securities to avoid transaction costs of selling.

How do you mitigate Status Quo Bias?

1. Demonstrate the downside risks of holding inappropriate assets. 2. Ask whether adhering to the status quo will affect the achievement of financial goals.

What is the key literature reference for Status Quo Bias?

Samuelson & Zeckhauser, 1988. 'Status Quo Bias in Decision Making'

What is Endowment Bias?

People value an asset more when they own it (hold property rights) than when they don't. This applies to both inherited securities (reluctant to sell) and recently purchased securities (overvalue their holdings).

What explains Endowment Bias?

1. A mental process that attributes differential weight to owned objects. 2. People attach emotions to objects/goods. 3. People seek familiarity in their holdings.

What are the consequences of Endowment Bias?

1. Minimum selling prices stated by people tend to exceed the maximum purchase prices they'd pay for the same asset. 2. Losing an owned object is perceived as more painful than the equivalent gain of acquiring that object.

What are the implications of Endowment Bias for investors?

1. Inherited securities: holding securities regardless of whether it's financially wise. 2. Purchased securities: holding securities simply because they already own them. 3. Commission aversion: holding securities to avoid transaction costs of selling.

How do you mitigate Endowment Bias?

1. For inherited/purchased securities: ask 'what would I do if I had received cash instead?' 2. For commission aversion: investment decisions should be based on opportunity cost (potential value), not transaction costs.

What is the key literature reference for Endowment Bias?

Kahneman, 1991. 'The Endowment Effect, Loss Aversion, and Status Quo Bias'

What is the bias proxy for Endowment Bias?

Bid-ask spread — there are two prices for the same asset: one for the owner (ask) and one for the buyer (bid). A wider spread in illiquid or subjectively valued assets indicates stronger endowment bias.

What is Regret Aversion?

People avoid taking decisive actions because they fear that, in hindsight, whatever course they select will prove suboptimal, leading to regret. It seeks to prevent the pain of regret associated with poor decision making.

What are the two types of Regret Aversion errors?

1. Errors of Commission: regret from misguided actions taken in the past (e.g. investing and losing). 2. Errors of Omission: regret from misguided inactions — failing to act when you should have (e.g. missing a profitable investment).

What explains the two types of Regret Aversion?

1. Error of Commission: psychologically hard to accept losses (Prospect Theory). 2. Error of Omission: people follow the crowd because it feels safer and they feel less responsible if a consensus decision goes wrong.

What are the implications of Regret Aversion for investors?

1. Being too conservative after past losses → long-term underperformance. 2. Shying away from recently fallen markets despite opportunities. 3. Holding losing positions too long (similar to loss aversion). 4. Herding behavior — following consensus to limit future regret. 5. Holding winners too long due to FOMO.

How do you mitigate Regret Aversion?

1. Too conservative: understand long-term benefits of risky assets. 2. Staying out after losses: 'buy low, sell high.' 3. Holding losers too long: cut losses and move on. 4. Herding: ground decisions in historical and fundamental analysis. 5. Holding winners too long: 'You never get hurt taking a profit.'

What are the bias proxies for Regret Aversion?

1. Study securities that have recently suffered losses (do investors avoid them?). 2. Study market bubbles (herding behavior driven by FOMO).

What is the difference between Cognitive and Emotional Biases?

Cognitive biases involve errors in thinking/information processing and can often be corrected through education. Emotional biases stem from feelings and intuition and are harder to eliminate — they can usually only be adapted to.

What are the 6 Emotional Biases covered in this course?

Loss Aversion, Overconfidence, Self-Control, Status Quo, Endowment, Regret Aversion

How can Loss Aversion and Status Quo Bias interact?

When faced with changing a portfolio, an investor suffering from both biases may choose to maintain the status quo rather than realize a potential loss — reinforcing inaction.

What is 'get-even-itis'?

A manifestation of Loss Aversion where investors hold onto losing investments hoping the investment will recover enough to break even, rather than cutting losses and reallocating capital.

What is the 'paper loss' rationalization?

A consequence of Loss Aversion where investors justify holding losing investments by telling themselves the loss is not real until the position is sold — even when fundamentals suggest selling.

What does the Barber & Odean (2001) study show about Overconfidence?

'Boys Will Be Boys' — men are significantly more overconfident than women and trade much more as a result. Higher trading turnover leads to lower net returns due to transaction costs and poor timing.

Why do overconfident investors hold underdiversified portfolios?

They believe in their ability to pick winners and concentrate holdings based on special knowledge they believe they possess, taking on more risk than their actual risk tolerance warrants.

How does Self-Control Bias affect asset allocation?

Investors with self-control bias tend to prefer income-producing assets (like high dividend stocks) because they can spend the income now — leading to an imbalance toward income over growth assets.

Why have Dividend Aristocrats underperformed the market?

Investors attracted to dividend-paying stocks due to self-control bias create excess demand, but without proper risk adjustments these portfolios have not matched broader market returns like the S&P 500.

How does Regret Aversion cause herding behavior?

Investors buy into mass consensus because if the decision goes wrong, they feel less personally responsible when everyone else made the same mistake — reducing anticipated regret.

What is the key literature reference for Loss Aversion?

Kahneman and Tversky, 1979. 'Prospect Theory: An Analysis of Decision under Risk'

What is the key literature reference for Overconfidence?

Barber and Odean, 2001. 'Gender, Overconfidence, and Common Stock Investment'

What is the key literature reference for Regret Aversion?

Kahneman and Tversky, 1979. 'Prospect Theory: An Analysis of Decision under Risk'