Biases in Risk Perception

1. In Behavioural Finance there is a branch known as Prospect Theory, which deals with the way ordinary people make decisions about risk when knowing the probability of the outcome. It’s well accepted that people are not rational when they have to make decisions pertaining to risk, as they are influenced by many cognitive biases and distortions.

Prospect Theory & Cognitive Biases

The founding fathers of Prospect Theory, Amos Tversky and Daniel Kahneman (Noble prize winner), were the first researchers to identify and carefully study Cognitive Biases. They proved that a simple version of Expected Utility Theory did not accurately describe human behaviour.

The original Prospect Theory was later refined to produce Cumulative Prospect Theory which includes some of the following components:

Narrow Framing – When a person makes a decision, whether to invest or to make a gamble, they tend to act as though this decision was being taken in isolation. This is understandable since making the best decision requires taking into account all the risks a person is facing in their entire life, which is often too complex.

Reference Return – For example, if the market went up 20%, and a person made 5% on their position, most people wouldn’t be pleased with that outcome. Conversely, if the market fell 10%, and a person made 5% on their position, most people would be rather pleased. This shows that the utility that one gets from an investment is not simply a function of the actual return, but also depends on how that return compares to some mental point of reference the person has.

Loss Aversion – For most people, the pain of losing $1,000 is about twice the magnitude of the pleasure of gaining $1,000. Undoubtedly this distorts people’s decision making. For example, a person may decline a potential profit opportunity to avoid a potential loss even though the loss is comparatively small.

Probability Weighting – People tend to skew probabilities when making decisions by giving an unlikely event a higher probability than what is actually experienced, such as winning a lottery or getting a rare disease. On the other hand, people act as though likely events are somewhat less likely than they actually are.

Curved Value Function – People are risk averse with respect to gains, but become much more willing to take risks when facing a potential loss. To illustrate, if guaranteed a gain of $1,000 versus a 50% chance to gain $2,000 or $0, most would take the first option even though the expected value is the same. However, if guaranteed a loss of $1,000 versus a 50% loss of $2,000 or $0, most would take the second option, preferring to take the chance that they lose nothing. In terms of gains, people are risk sensitive, but regarding loss, they are less risk sensitive.

About:

Founder and Managing Director of R3 Analytics, Liam O’Brien has considerable experience and knowledge in trading and Risk Management Risk Management One of the most common terms utilized by brokers, risk management refers to the practice of identifying potential risks in advance. Most commonly, this also involves the analysis of risk and the undertaking of precautionary steps to both mitigate and prevent for such risk.Such efforts are essential for brokers and venues in the finance industry, given the potential for fallout in the face of unforeseen events or crises. Given a more tightly regulated environment across nearly every asset class, One of the most common terms utilized by brokers, risk management refers to the practice of identifying potential risks in advance. Most commonly, this also involves the analysis of risk and the undertaking of precautionary steps to both mitigate and prevent for such risk.Such efforts are essential for brokers and venues in the finance industry, given the potential for fallout in the face of unforeseen events or crises. Given a more tightly regulated environment across nearly every asset class, Read this Term across multiple asset classes, developed over more than a decade in the financial services industry. Liam began as a proprietary trader in the industry and has since held roles in funds management, electronic trading, quantitative trading and risk, and broader investment banking. He has an intimate understanding of managing risk across all business units and a full appreciation of the role financial technologies serve in making Forex Forex Foreign exchange or forex is the act of converting one nation’s currency into another nation’s currency (that possesses a different currency); for example, the converting of British Pounds into US Dollars, and vice versa. The exchange of currencies can be done over a physical counter, such as at a Bureau de Change, or over the internet via broker platforms, where currency speculation takes place, known as forex trading.The foreign exchange market, by its very nature, is the world’s largest tradi Foreign exchange or forex is the act of converting one nation’s currency into another nation’s currency (that possesses a different currency); for example, the converting of British Pounds into US Dollars, and vice versa. The exchange of currencies can be done over a physical counter, such as at a Bureau de Change, or over the internet via broker platforms, where currency speculation takes place, known as forex trading.The foreign exchange market, by its very nature, is the world’s largest tradi Read this Term trading firms successful. Liam studied at and is a graduate of Harvard Business School.

Email or call +61 2 8188 4400 for risk management consultation and solutions.