Problem
Success stories hide most failed attempts.
Action
Examine unsuccessful cases before drawing conclusions.
Outcome
You form more realistic expectations.
Chapter: Why You Should Visit Cemeteries: Survivorship Bias
Problem
Success is often mistaken for the result of training.
Action
Ask whether successful people already had advantages before they succeeded.
Outcome
You identify causes more accurately.
Chapter: Does Harvard Make You Smarter?: Swimmer’s Body Illusion
Problem
Random events often appear meaningful.
Action
Require enough evidence before accepting a pattern.
Outcome
You avoid acting on coincidence.
Chapter: Why You See Shapes in the Clouds: Clustering Illusion
Problem
Many people can believe something false.
Action
Evaluate claims using evidence rather than public agreement.
Outcome
You think more independently.
Chapter: If Fifty Million People Say Something Foolish, It Is Still Foolish: Social Proof
Problem
Past investments can trap future decisions.
Action
Base choices only on future costs and benefits.
Outcome
You leave bad situations sooner.
Chapter: Why You Should Forget the Past: Sunk Cost Fallacy
Problem
Receiving something creates pressure to give something back.
Action
Notice feelings of obligation before making decisions.
Outcome
You preserve your independence.
Chapter: Don’t Accept Free Drinks: Reciprocity
Problem
People naturally favor supporting information.
Action
Actively look for facts that challenge your position.
Outcome
Your conclusions become more reliable.
Chapter: Beware the “Special Case”: Confirmation Bias (Part 1)
Problem
Attachment protects weak ideas from criticism.
Action
Remove ideas that cannot survive honest evaluation.
Outcome
Your thinking becomes more accurate.
Chapter: Murder Your Darlings: Confirmation Bias (Part 2)
Problem
Status can make weak arguments seem convincing.
Action
Examine the evidence rather than relying on titles.
Outcome
You make better judgments.
Chapter: Don’t Bow to Authority: Authority Bias
Problem
Comparisons can distort perception.
Action
Judge each option against your needs and criteria.
Outcome
You make fairer evaluations.
Chapter: Leave Your Supermodel Friends at Home: Contrast Effect
Problem
Memorable examples feel more common than they are.
Action
Consult statistics before relying on recall.
Outcome
Your estimates become more accurate.
Chapter: Why We Prefer a Wrong Map to None at All: Availability Bias
Problem
Pain is often mistaken for improvement.
Action
Define measurable signs that show whether something works.
Outcome
You avoid ineffective solutions.
Chapter: Why “No Pain, No Gain” Should Set Alarm Bells Ringing: The It’ll-Get-Worse-Before-It-Gets-Better Fallacy
Problem
Narratives can hide weak evidence.
Action
Examine the individual facts behind the story.
Outcome
You reach more reliable conclusions.
Chapter: Even True Stories Are Fairy Tales: Story Bias
Problem
Past events seem predictable after they happen.
Action
Write down expectations before results are known.
Outcome
You learn from forecasting mistakes.
Chapter: Why You Should Keep a Diary: Hindsight Bias
Problem
People overestimate their knowledge and ability.
Action
Use wider ranges and lower confidence in predictions.
Outcome
You make safer decisions.
Chapter: Why You Systematically Overestimate Your Knowledge and Abilities: Overconfidence Effect
Problem
Confident speech can mimic expertise.
Action
Ask for clear explanations and reasoning.
Outcome
You identify genuine knowledge.
Chapter: Don’t Take News Anchors Seriously: Chauffeur Knowledge
Problem
People exaggerate their influence over outcomes.
Action
Separate controllable factors from chance.
Outcome
You use effort more effectively.
Chapter: You Control Less Than You Think: Illusion of Control
Problem
Rewards strongly shape behavior.
Action
Examine how people benefit from their actions.
Outcome
You predict behavior more accurately.
Chapter: Never Pay Your Lawyer by the Hour: Incentive Super-Response Tendency
Problem
Temporary extremes often look like lasting change.
Action
Wait for results to stabilize before judging effectiveness.
Outcome
You avoid false conclusions.
Chapter: The Dubious Efficacy of Doctors, Consultants, and Psychotherapists: Regression to Mean
Problem
Good outcomes can result from poor decisions.
Action
Evaluate the reasoning used before the outcome was known.
Outcome
You improve decision quality.
Chapter: Never Judge a Decision by Its Outcome: Outcome Bias
Problem
Too many options make decisions harder.
Action
Limit the number of alternatives you consider.
Outcome
You choose more easily and confidently.
Chapter: Less Is More: Paradox of Choice
Problem
Personal liking distorts judgment.
Action
Assess people and proposals independently.
Outcome
You become more objective.
Chapter: You Like Me, You Really, Really Like Me: Liking Bias
Problem
Ownership increases perceived value.
Action
Ask what you would pay if you did not own the item.
Outcome
You make better buying and selling decisions.
Chapter: Don’t Cling to Things: Endowment Effect
Problem
Rare events feel more meaningful than they are.
Action
Accept that unlikely events occur naturally.
Outcome
You avoid false explanations.
Chapter: The Inevitability of Unlikely Events: Coincidence
Problem
Groups can suppress critical thinking.
Action
Invite opposing views before making decisions.
Outcome
The group finds more mistakes.
Chapter: The Calamity of Conformity: Groupthink
Problem
Large rewards distract attention from small odds.
Action
Estimate the likelihood before deciding.
Outcome
You make better risk decisions.
Chapter: Why You’ll Soon Be Playing Mega Trillions: Neglect of Probability
Problem
Limited availability increases desire.
Action
Evaluate usefulness without considering scarcity.
Outcome
You resist pressure-based decisions.
Chapter: Why the Last Cookie in the Jar Makes Your Mouth Water: Scarcity Error
Problem
Specific details distract from common outcomes.
Action
Check general frequencies before considering special cases.
Outcome
You make more accurate judgments.
Chapter: When You Hear Hoofbeats, Don’t Expect a Zebra: Base-Rate Neglect
Problem
People expect chance to correct itself.
Action
Ignore past streaks when evaluating future probabilities.
Outcome
You avoid gambling mistakes.
Chapter: Why the “Balancing Force of the Universe” Is Baloney: Gambler’s Fallacy
Problem
Initial numbers influence judgment.
Action
Make an independent estimate before hearing others.
Outcome
You reduce anchoring effects.
Chapter: Why the Wheel of Fortune Makes Our Heads Spin: The Anchor
Problem
Small amounts of evidence create false confidence.
Action
Wait for more observations before generalizing.
Outcome
You form stronger conclusions.
Chapter: How to Relieve People of Their Millions: Induction
Problem
Losses receive more weight than gains.
Action
Compare outcomes using the same standard.
Outcome
You make more balanced decisions.
Chapter: Why Evil Is More Striking Than Good: Loss Aversion
Problem
Shared responsibility reduces effort.
Action
Make individual accountability visible.
Outcome
People contribute more consistently.
Chapter: Why Teams Are Lazy: Social Loafing
Problem
Exponential change is difficult to understand.
Action
Project growth across multiple periods.
Outcome
You anticipate future changes more accurately.
Chapter: Stumped by a Sheet of Paper: Exponential Growth
Problem
Competition encourages overpayment.
Action
Define your maximum commitment in advance.
Outcome
You avoid costly victories.
Chapter: Curb Your Enthusiasm: Winner’s Curse
Problem
Behavior is often shaped by circumstances.
Action
Consider context before assigning blame.
Outcome
You make fairer judgments.
Chapter: Never Ask a Writer If the Novel Is Autobiographical: Fundamental Attribution Error
Problem
Correlation is often mistaken for cause.
Action
Look for evidence of direct influence.
Outcome
You avoid solving the wrong problem.
Chapter: Why You Shouldn’t Believe in the Stork: False Causality
Problem
One positive trait influences unrelated evaluations.
Action
Assess each quality independently.
Outcome
You evaluate people more accurately.
Chapter: Why Attractive People Climb the Career Ladder More Quickly: Halo Effect
Problem
Success can hide dangerous decisions.
Action
Examine what else could have happened.
Outcome
You understand risk more clearly.
Chapter: Congratulations! You’ve Won Russian Roulette: Alternative Paths
Problem
Predictions often appear more accurate than they are.
Action
View forecasts as probabilities rather than facts.
Outcome
You plan more realistically.
Chapter: False Prophets: Forecast Illusion
Problem
Specific scenarios seem more likely than they are.
Action
Compare detailed claims with simpler alternatives.
Outcome
You judge the likelihood more accurately.
Chapter: The Deception of Specific Cases: Conjunction Fallacy
Problem
Wording changes perception.
Action
View the same choice from multiple perspectives.
Outcome
You reduce framing effects.
Chapter: It’s Not What You Say, but How You Say It: Framing
Problem
Action feels better than waiting.
Action
Include inaction among your options.
Outcome
You avoid unnecessary intervention.
Chapter: Why Watching and Waiting Is Torture: Action Bias
Problem
Inaction often escapes criticism.
Action
Evaluate outcomes regardless of how they occur.
Outcome
You make more responsible decisions.
Chapter: Why You Are Either the Solution - or the Problem: Omission Bias
Problem
People protect their self-image.
Action
Acknowledge your role in failures and successes.
Outcome
You learn more effectively.
Chapter: Don’t Blame Me: Self-Serving Bias
Problem
The emotional impact of success fades over time.
Action
Choose improvements that create lasting value.
Outcome
You gain more durable satisfaction.
Chapter: Be Careful What You Wish For: Hedonic Treadmill
Problem
Visible examples may not represent reality.
Action
Identify who was excluded from observation.
Outcome
You reach better conclusions.
Chapter: Do Not Marvel at Your Existence: Self-Selection Bias
Problem
Past experiences create misleading associations.
Action
Evaluate present evidence independently.
Outcome
You reduce emotional bias.
Chapter: Why Experience Can Damage Your Judgment: Association Bias
Problem
Luck can look like skill.
Action
Observe performance over time before judging ability.
Outcome
You distinguish talent from chance.
Chapter: Be Wary When Things Get Off to a Great Start: Beginner’s Luck
Problem
People resist information that creates discomfort.
Action
Adjust your views to fit the facts.
Outcome
Your thinking stays consistent with reality.
Chapter: Sweet Little Lies: Cognitive Dissonance
Problem
Immediate rewards dominate long-term benefits.
Action
Use rules that support future goals.
Outcome
You make better long-term decisions.
Chapter: Live Each Day as If It Were Your Last - but Only on Sundays: Hyperbolic Discounting
Problem
Weak explanations can still sound persuasive.
Action
Ask whether the reason truly supports the request.
Outcome
You resist poor arguments.
Chapter: Any Lame Excuse: “Because” Justification
Problem
Frequent decisions reduce the quality of judgment.
Action
Standardize routine choices.
Outcome
You think more clearly about important matters.
Chapter: Decide Better - Decide Less: Decision Fatigue
Problem
Symbolic connections influence judgment.
Action
Judge objects by their actual properties.
Outcome
You make more rational evaluations.
Chapter: Would You Wear Hitler’s Sweater?: Contagion Bias
Problem
Average values hide important differences.
Action
Examine the distribution of outcomes.
Outcome
You understand situations more completely.
Chapter: Why There Is No Such Thing as an Average War: The Problem with Averages
Problem
External rewards can weaken internal motivation.
Action
Use incentives carefully.
Outcome
People remain genuinely engaged.
Chapter: How Bonuses Destroy Motivation: Motivation Crowding
Problem
Unnecessary talk creates noise.
Action
Contribute only meaningful information.
Outcome
Communication becomes more effective.
Chapter: If You Have Nothing to Say, Say Nothing: Twaddle Tendency
Problem
Improved averages can hide unchanged reality.
Action
Examine how the underlying groups changed.
Outcome
You interpret statistics correctly.
Chapter: How to Increase the Average IQ of Two States: Will Rogers Phenomenon
Problem
Extra information can reduce decision quality.
Action
Use only information that affects the decision.
Outcome
You think more clearly.
Chapter: If You Have an Enemy, Give Him Information: Information Bias
Problem
Effort increases attachment to weak outcomes.
Action
Evaluate value independently of work invested.
Outcome
You allocate resources more wisely.
Chapter: Hurts So Good: Effort Justification
Problem
Small samples produce misleading conclusions.
Action
Wait for more evidence.
Outcome
Your judgments become more reliable.
Chapter: Why Small Things Loom Large: The Law of Small Numbers
Problem
Expectations shape later experiences.
Action
Communicate likely outcomes honestly.
Outcome
Results are judged more fairly.
Chapter: Handle with Care: Expectations
Problem
Complex arguments can hide basic errors.
Action
Test ideas with straightforward reasoning.
Outcome
You find mistakes more quickly.
Chapter: Speed Traps Ahead!: Simple Logic
Problem
Vague descriptions can feel personally accurate.
Action
Ask whether the statement applies to most people.
Outcome
You avoid false insights.
Chapter: How to Expose a Charlatan: Forer Effect
Problem
Helping in one place prevents helping elsewhere.
Action
Compare the impact of alternative uses of your time.
Outcome
You use your efforts more effectively.
Chapter: Volunteer Work Is for the Birds: Volunteer’s Folly
Problem
Emotions distort judgment.
Action
Wait until emotional intensity decreases.
Outcome
You make more rational choices.
Chapter: Why You Are a Slave to Your Emotions: Affect Heuristic
Problem
People misunderstand their own motives.
Action
Compare your beliefs about yourself with your behavior.
Outcome
You gain better self-awareness.
Chapter: Be Your Own Heretic: Introspection Illusion
Problem
Too many open options weaken commitment.
Action
Eliminate paths that do not support your goals.
Outcome
You focus more effectively.
Chapter: Why You Should Set Fire to Your Ships: Inability to Close Doors
Problem
Novelty is often mistaken for improvement.
Action
Require proof before adopting new ideas.
Outcome
You avoid unnecessary change.
Chapter: Disregard the Brand New: Neomania
Problem
Messages can outlive their credibility.
Action
Track where important claims originated.
Outcome
You judge information more accurately.
Chapter: Why Propaganda Works: Sleeper Effect
Problem
People overlook available options.
Action
Create additional choices before deciding.
Outcome
You find better solutions.
Chapter: Why It’s Never Just a Two-Horse Race: Alternative Blindness
Problem
Comparison with others distorts judgment.
Action
Use objective criteria to evaluate progress.
Outcome
You reduce unnecessary competition.
Chapter: Why We Take Aim at Young Guns: Social Comparison Bias
Problem
Early information receives too much weight.
Action
Review all evidence before deciding.
Outcome
You reach more balanced conclusions.
Chapter: Why First Impressions Are Deceiving: Primacy and Recency Effects
Problem
Outside solutions face unfair resistance.
Action
Judge ideas by effectiveness rather than source.
Outcome
You solve problems more efficiently.
Chapter: Why You Can’t Beat Homemade: Not-Invented-Here Syndrome
Problem
Rare events can have large consequences.
Action
Build resilience against unlikely outcomes.
Outcome
You handle uncertainty better.
Chapter: How to Profit from the Implausible: The Black Swan
Problem
Knowledge often fails outside its field.
Action
Match experts to relevant problems.
Outcome
You use expertise more effectively.
Chapter: Knowledge Is Nontransferable: Domain Dependence
Problem
People overestimate how much others agree with them.
Action
Ask others what they actually think.
Outcome
You understand differences more clearly.
Chapter: The Myth of Like-Mindedness: False-Consensus Effect
Problem
People unconsciously rewrite the past.
Action
Keep written records of predictions and decisions.
Outcome
You learn from reality rather than memory.
Chapter: You Were Right All Along: Falsification of History
Problem
Group identity distorts judgment.
Action
Evaluate all groups using identical criteria.
Outcome
You reduce bias.
Chapter: Why You Identify with Your Football Team: In-Group Out-Group Bias
Problem
Unknown probabilities require different treatment than known risks.
Action
Use extra caution when probabilities are unclear.
Outcome
You make better decisions under uncertainty.
Chapter: The Difference between Risk and Uncertainty: Ambiguity Aversion
Problem
Default settings quietly shape behavior.
Action
Examine defaults before accepting them.
Outcome
You gain greater control over choices.
Chapter: Why You Go with the Status Quo: Default Effect
Problem
Fear of regret distorts judgment.
Action
Choose based on evidence rather than anticipated emotions.
Outcome
You make calmer decisions.
Chapter: Why “Last Chances” Make Us Panic: Fear of Regret
Problem
Vivid details distract attention from important factors.
Action
Prioritize information by relevance.
Outcome
You make better judgments.
Chapter: How Eye-Catching Details Render Us Blind: Salience Effect
Problem
The source of money changes behavior.
Action
Apply the same standards to every gain and loss.
Outcome
You make more consistent financial decisions.
Chapter: Why Money Is Not Naked: House-Money Effect
Problem
Delay prevents progress.
Action
Take the next concrete step immediately.
Outcome
You complete more goals.
Chapter: Why New Year’s Resolutions Don’t Work: Procrastination
Problem
Comparison creates dissatisfaction.
Action
Measure progress against your own goals.
Outcome
You reduce envy.
Chapter: Build Your Own Castle: Envy
Problem
Individual stories distort perception of scale.
Action
Review data alongside personal examples.
Outcome
You understand reality more accurately.
Chapter: Why You Prefer Novels to Statistics: Personification
Problem
Attention overlooks significant details.
Action
Actively search for what you have not noticed.
Outcome
You make more informed decisions.
Chapter: You Have No Idea What You Are Overlooking: Illusion of Attention
Problem
People exaggerate future success.
Action
Evaluate claims against historical evidence.
Outcome
You avoid unrealistic expectations.
Chapter: Hot Air: Strategic Misrepresentation
Problem
Excessive thinking delays action.
Action
Act once enough information is available.
Outcome
You move forward more effectively.
Chapter: Where’s the Off Switch?: Overthinking
Problem
Projects usually take longer than expected.
Action
Include extra time and resources in forecasts.
Outcome
Your plans become more realistic.
Chapter: Why You Take On Too Much: Planning Fallacy
Problem
Professional habits narrow perception.
Action
Examine problems through different disciplines.
Outcome
You discover better solutions.
Chapter: Those Wielding Hammers See Only Nails: Déformation Professionnelle
Problem
Unfinished tasks consume attention.
Action
Complete tasks or define the next action.
Outcome
You free mental energy.
Chapter: Mission Accomplished: Zeigarnik Effect
Problem
Success is often attributed entirely to skill.
Action
Assess the role of circumstances in performance.
Outcome
You judge ability more accurately.
Chapter: The Boat Matters More Than the Rowing: Illusion of Skill
Problem
Visible features receive too much attention.
Action
Search for important information that is absent.
Outcome
You make more complete evaluations.
Chapter: Why Checklists Deceive You: Feature-Positive Effect
Problem
People select evidence after seeing outcomes.
Action
Establish evaluation standards in advance.
Outcome
You reduce biased interpretation.
Chapter: Drawing the Bull’s-Eye around the Arrow: Cherry Picking
Problem
Complex events rarely have a single explanation.
Action
Identify several contributing factors.
Outcome
You understand problems more accurately.
Chapter: The Stone Age Hunt for Scapegoats: Fallacy of the Single Cause
Problem
Excluding participants distorts results.
Action
Assess outcomes for the entire original group.
Outcome
You obtain more reliable conclusions.
Chapter: Why Speed Demons Appear to Be Safer Drivers: Intention-to-Treat Error
Problem
Constant news consumption creates noise.
Action
Spend more time on durable sources of understanding.
Outcome
You improve judgment and focus.
Chapter: Why You Shouldn’t Read the News: News Illusion