What is Risk aversion/tolerance?
Risk aversion is the preference for a certain outcome over a gamble with equal or higher expected value. Risk tolerance is its inverse: the willingness to accept variability in outcomes for a chance at better results. Most people are risk-averse for gains and risk-seeking for losses.
How it works
Classical economics models risk aversion through diminishing marginal utility of wealth: each additional dollar is worth slightly less, so a guaranteed $50 is preferred to a 50/50 chance of $0 or $100. Behavioral economics adds that reference points, loss aversion, and probability weighting also shape risk attitudes. Risk tolerance varies across individuals (personality, wealth, experience) and situations (domain, framing, emotional state).
Applied example
Given a choice between a guaranteed $800 and a 90% chance of $1,000, most people take the guaranteed $800 even though the gamble has a higher expected value ($900). But when choosing between a certain loss of $800 and a 90% chance of losing $1,000, most people gamble, becoming risk-seeking to avoid the certain loss.
Why it matters
Understanding risk attitudes is foundational for financial advising, insurance pricing, medical decision-making, and any domain where people must choose between certain and uncertain outcomes.
