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Cognitive Biases quiz

How well do you understand recurring patterns studied in judgment and decision research? This educational quiz covers anchoring, confirmation bias, availability, framing, hindsight, loss aversion, and selection effects. These concepts describe tendencies observed under particular conditions; they do not prove that every person or decision is biased, and recognizing a label does not by itself eliminate the effect.

Start the quiz
Questions
10
Time
12 min
Difficulty
● Medium
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Quick info

Before you start

Best for

Anyone curious how thinking goes wrong

Format

10 explanation-backed questions in about 12 minutes.

What you'll cover

A small map of the test

  1. 1Anchoring, confirmation bias, and the availability heuristic
  2. 2Sunk cost fallacy and loss aversion
  3. 3Framing, halo, and hindsight effects
  4. 4Dunning-Kruger and survivorship bias
Audience

Who this quiz is for

  • Anyone curious how thinking goes wrong
  • Learners reviewing the most common cognitive biases
Key concepts

Ideas this quiz checks

Anchoring effect

Relying too heavily on the first piece of information seen when making a judgment.

Confirmation bias

Favoring information that supports what you already believe and discounting the rest.

Loss aversion

Feeling the pain of a loss more strongly than the pleasure of an equal gain.

Availability heuristic

Judging how likely something is by how easily examples come to mind.

Score guide

How to read your score

  1. 80–100% Strong command

    You understand most of the core ideas and can use the explanations to polish smaller gaps.

  2. 50–79% Solid base

    You know part of the topic, but the missed explanations are the highest-value review material.

  3. 0–49% Review first

    Treat this as a starting map: revisit the key concepts, then retake the quiz for a cleaner signal.

After the quiz

Recommended next steps

  • Read Understanding Cognitive Biases for a practical guide to spotting and countering them
  • Take the Decision-Making Process Quiz to review stronger ways to structure a choice
  • Try the Emotional Intelligence Quiz for another look at how the mind works
References

Sources and further reading

Important note

Educational disclaimer

This quiz is general educational content about cognitive psychology, offered for self-reflection and learning rather than diagnosis.

How to play

Instructions

  1. You have 12 minutes total to answer 10 multiple-choice questions.
  2. Choose an answer to lock it in. The runner immediately shows the correct answer and explanation.
  3. Use Hint when you want a nudge, or Skip to move forward without answering.
  4. Keyboard shortcuts: A-D answer, H hints, S skips, Enter/ next, and previous.
  5. No signup required. Your progress is local to this quiz session.
Every question, explained

Answer key and explanations

All 10 questions from this quiz, with the correct answer and the reasoning behind it. Take the quiz first if you want an honest score — or read straight through and use this as revision material.

  1. What is the 'anchoring effect'?

    • The tendency to rely too heavily on the first piece of information encounteredCorrect
    • The tendency to anchor decisions to emotional outcomes
    • The tendency to seek information that confirms existing beliefs
    • The tendency to overestimate the likelihood of memorable events

    Why: Anchoring describes judgments being pulled toward an initially presented value or reference point, even when that starting information is incomplete or arbitrary. The size and reliability of the effect depend on the task and context, so the concept is a research finding rather than a claim that the first number always controls a decision.

  2. Which bias causes people to continue investing in a failing project because of past investment?

    • Optimism bias
    • Sunk cost fallacyCorrect
    • Availability heuristic
    • Dunning-Kruger effect

    Why: A sunk cost is a past expenditure of time, money, or effort that cannot be recovered. Treating that past expenditure as a reason to continue can distort the current comparison; the relevant analysis considers future costs, benefits, risks, obligations, and switching consequences.

  3. What does 'confirmation bias' describe?

    • The tendency to remember information that confirms a prior belief
    • The tendency to seek, interpret, and recall information that confirms one's preexisting beliefsCorrect
    • The tendency to confirm decisions with a trusted advisor
    • The tendency to agree with authority figures

    Why: Confirmation bias is an umbrella term for favoring information that supports an existing belief during search, interpretation, or memory. A useful process check is to ask what evidence would count against the preferred conclusion and whether credible alternatives received comparable scrutiny; this reduces one opportunity for biased evaluation but cannot guarantee neutrality.

  4. The 'availability heuristic' leads people to judge the likelihood of events based on:

    • Statistical base rates
    • Expert opinion
    • How easily examples come to mindCorrect
    • The number of times they have personally experienced the event

    Why: The availability heuristic describes estimating frequency or likelihood partly from how readily examples can be recalled. Vivid, recent, or heavily publicized events may therefore receive more weight than base-rate evidence warrants, although easy recall is not always misleading.

  5. What did the original 1999 research associated with the Dunning–Kruger effect examine?

    • Whether low performers in specific tested domains misjudged their relative performanceCorrect
    • Whether every beginner believes they are an expert
    • Whether experts always underestimate themselves
    • Whether confidence is a fixed personality trait

    Why: Kruger and Dunning studied participants' test performance and estimates of their performance in specific domains including humor, grammar, and logic. Lower-performing groups substantially overestimated their percentile standing in those studies. The popular claim that all inexperienced people think they are experts is broader than the original evidence, and later researchers have debated how measurement and statistical effects contribute to the pattern.

  6. What is 'hindsight bias'?

    • The tendency to make better decisions after reflecting on the past
    • The tendency to see past events as having been more predictable than they actually wereCorrect
    • The tendency to forget past mistakes
    • The tendency to focus only on recent events

    Why: Hindsight bias — often called the 'I-knew-it-all-along' effect — is the tendency to perceive past events as having been more predictable than they really were. Once an outcome is known, people overestimate how obvious it was beforehand. This can distort learning (we think we already 'knew' it) and lead us to judge others' decisions unfairly when those decisions were actually made under genuine uncertainty.

  7. What does 'loss aversion' describe?

    • The tendency to avoid all forms of financial risk
    • The tendency for losses to feel psychologically more painful than equivalent gains feel goodCorrect
    • The tendency to lose interest in long-term goals
    • The tendency to avoid making any decision at all

    Why: In prospect-theory research, outcomes can be evaluated relative to a reference point, with losses sometimes weighted more heavily than comparable gains. The strength of loss aversion is not a universal two-to-one psychological constant; it varies with context, stakes, measurement, and the kind of choice being studied.

  8. What is the 'framing effect'?

    • Judging a person mainly by their physical appearance
    • Reaching different conclusions depending on how the same information is presentedCorrect
    • Blaming external circumstances for your own mistakes
    • Remembering the first and last items in a list best

    Why: A framing effect occurs when equivalent descriptions of a decision produce different preferences. Tversky and Kahneman demonstrated preference shifts between gain and loss formulations. Rewriting quantities in equivalent terms is a useful consistency check, although not every wording change is logically equivalent or produces an effect.

  9. What is the 'halo effect'?

    • The tendency to believe attractive or likeable people are also competent, kind, or trustworthyCorrect
    • The tendency to feel good after helping others
    • The tendency to overvalue brand-new products
    • The tendency to remember positive experiences more than negative ones

    Why: The halo effect describes an overall positive or negative impression influencing judgments about separate traits without enough trait-specific evidence. In evaluation settings, defining criteria and judging each relevant dimension separately can make the basis of a decision more visible, though structure does not remove every source of bias.

  10. What is 'survivorship bias'?

    • Focusing only on the survivors or successes while ignoring those that failed and are no longer visibleCorrect
    • The belief that you will live longer than statistics suggest
    • Preferring older, proven products over new ones
    • The tendency to take fewer risks as you age

    Why: Survivorship bias is a form of selection bias: analysis focuses on cases that remained observable after a selection process while excluded, failed, or missing cases are overlooked. Conclusions about success rates or causes can then be distorted because the observed group is not the full group that originally faced the process.