Judgment Errors

Judgment errors are cognitive biases that skew decision-making processes, often leading to incorrect or suboptimal outcomes. These biases influence how we interpret information, make predictions, and assess risks, frequently resulting in flawed judgments that can have significant impacts on our decisions and behaviors. Understanding these errors can help in making more rational and informed decisions, avoiding common pitfalls that many fall into.

Thinking past random outcomes affect future ones - why 'due' outcomes are a myth. How to think about probability. Gambler's fallacy examples.

Ignoring how common something is when judging likelihood. How we overweight specifics and how to use base rates. Examples and prevention.

Judging a decision by its outcome instead of the process. Why good decisions can fail and bad ones succeed - and how to evaluate fairly.

Later information distorts memory of events. How post-event details alter recall and implications for witnesses. Research and prevention.

Remembering first and last items best - primacy and recency. How list order affects memory and persuasion. Examples and research.

First impressions stick. Why we overweight early information in memory and judgment and how to correct for it. Examples and research.

Recent information weighs too much. Why the last thing you heard can dominate and how to balance with the full picture. Examples and research.

Believing a streak will continue. Why we see patterns in randomness and how to avoid betting on false hot hands. Examples and prevention.

Underestimating time, cost, and risk; overestimating benefits. Why projects run late and how to plan more realistically. Examples and prevention.

Overvaluing new ideas and underestimating downsides. Why we're overly optimistic about innovation and how to balance.

Overestimating your knowledge or accuracy. Causes, examples in finance and health, and how to calibrate your confidence. Research and reframing.

Preferring to eliminate a small risk entirely over reducing a bigger one. Why we choose suboptimal safety and how to decide. Examples and prevention.

Ignoring how likely something is when deciding. How we focus on outcomes and how to factor in probability. Examples and prevention.

Rationalizing what you want to believe - desire shapes how we weigh evidence. How it drives polarization and how to reason more objectively.

Learning only from successes and ignoring failures. Why it distorts lessons from history, business, and investing. Examples and prevention.