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Mental Traps Quiz – Printable Version

20 multiple-choice questions with an explained answer key, ready to print.

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  1. Which bias leads us to overestimate our own skills or knowledge?
    • A. Confirmation bias
    • B. Dunning-Kruger effect
    • C. Anchoring bias
    • D. Halo effect
  2. Which optical illusion makes two lines of equal length appear different?
    • A. Müller-Lyer illusion
    • B. Café wall illusion
    • C. Zöllner illusion
    • D. Ponzo illusion
  3. Which bias leads us to judge a person globally based on a single characteristic?
    • A. Halo effect
    • B. Availability bias
    • C. Confirmation bias
    • D. Anchoring bias
  4. Which illusion makes circles of the same size appear different depending on their surroundings?
    • A. Ebbinghaus illusion
    • B. Zöllner illusion
    • C. Müller-Lyer illusion
    • D. Ponzo illusion
  5. Which bias leads us to make decisions based on initial information, even if it is irrelevant?
    • A. Negativity bias
    • B. Anchoring bias
    • C. Availability bias
    • D. Confirmation bias
  6. Which bias leads us to believe that others think like us?
    • A. Confirmation bias
    • B. Availability bias
    • C. Anchoring bias
    • D. False consensus effect
  7. Which bias leads us to attribute our successes to our skills and our failures to external factors?
    • A. Self-serving bias
    • B. Anchoring bias
    • C. Availability bias
    • D. Confirmation bias
  8. Why do we struggle to react when a car comes at us the wrong way?
    • A. Because the surprise effect temporarily paralyses our reaction
    • B. Because our brain misjudges the other vehicle's speed
    • C. Because the brain needs time to correct a situation perceived as abnormal
    • D. Because a cognitive bias leads us to underestimate the danger
  9. How does the brain interpret ambiguous signals in a stressful environment?
    • A. It ignores them
    • B. It requests more information
    • C. It amplifies them positively
    • D. It interprets them as threats by default
  10. Which phenomenon explains why we find it difficult to change our minds even when faced with tangible evidence?
    • A. Cognitive inertia
    • B. Belief perseverance
    • C. Functional fixedness
    • D. Mental rigidity
  11. How does our brain handle contradictory information when making a decision?
    • A. It amplifies it
    • B. It discards it to avoid cognitive dissonance
    • C. It integrates all of it
    • D. It stores it for later
  12. Why does the brain struggle to accept change?
    • A. It is biologically incapable of change
    • B. Due to lack of neuroplasticity
    • C. It prefers the comfort of the familiar to save energy
    • D. It fears the unknown
  13. What tendency leads our brain to forget the unpleasant details of a memory over time?
    • A. Positivity bias
    • B. Memory rewriting
    • C. Adaptive forgetting
    • D. Fading Affect Bias
  14. Why does the brain tend to create linear stories from disconnected events?
    • A. Narrative bias
    • B. Need for coherence
    • C. Memory construction
    • D. Causality bias
  15. Which effect explains our difficulty in objectively evaluating our own emotions?
    • A. Reflexive deficit
    • B. Introspection bias
    • C. Introspection illusion
    • D. Emotional myopia
  16. Which bias leads us to overestimate our ability to have predicted an event after it occurred?
    • A. Survivorship bias
    • B. Hindsight bias
    • C. Mastery bias
    • D. Prediction illusion
  17. How does the brain react to information overload?
    • A. It stores it in long-term memory
    • B. It overloads completely
    • C. It activates selective filtering
    • D. It processes it more slowly
  18. Why do we perceive similarities between people from groups outside our own?
    • A. Group bias
    • B. Cognitive stereotyping
    • C. Out-group homogeneity effect
    • D. Categorisation bias
  19. How does the framing bias influence our choices?
    • A. The way information is presented changes our judgement
    • B. It pushes us towards the safest choice
    • C. It only influences our emotions
    • D. It makes us more rational
  20. What is the tendency to remember unfinished tasks better than completed ones called?
    • A. The Zeigarnik effect
    • B. The Barnum effect
    • C. The mere-exposure effect
    • D. The Stroop effect

Answer key — Mental Traps Quiz

  1. B. Dunning-Kruger effectThe Dunning-Kruger effect is a cognitive bias whereby less competent individuals overestimate their own abilities.
  2. A. Müller-Lyer illusionThe Müller-Lyer illusion uses arrow heads to make two lines of equal length appear different.
  3. A. Halo effectThe halo effect is the tendency to let a general impression (positive or negative) influence our judgements on specific aspects.
  4. A. Ebbinghaus illusionThe Ebbinghaus illusion uses circles of different sizes to make equally sized circles appear different.
  5. B. Anchoring biasThe anchoring bias is the tendency to rely too heavily on the first piece of information encountered (the 'anchor') when making decisions.
  6. D. False consensus effectThe false consensus effect is the tendency to overestimate the extent to which others share our beliefs and behaviours.
  7. A. Self-serving biasThe self-serving bias is the tendency to attribute successes to internal factors (such as skills) and failures to external factors.
  8. C. Because the brain needs time to correct a situation perceived as abnormalWhen a situation is perceived as abnormal (such as a car going the wrong way), the brain takes extra time to process the information and adjust its perception in order to trigger the appropriate reaction.
  9. D. It interprets them as threats by defaultUnder stress, the brain prioritises survival and interprets ambiguity as a potential danger.
  10. B. Belief perseveranceThe brain tends to maintain initial beliefs even after the evidence that founded them has been refuted.
  11. B. It discards it to avoid cognitive dissonanceTo avoid psychological discomfort (dissonance), the brain minimises or rejects information contradicting the decision made.
  12. C. It prefers the comfort of the familiar to save energyThe brain processes the familiar automatically and cheaply, whereas the new requires a significant energy expenditure.
  13. D. Fading Affect BiasThe Fading Affect Bias is the tendency for the negative emotions associated with a memory to fade faster than the positive ones.
  14. A. Narrative biasThe brain is designed to create meaning and uses the narrative bias to link independent facts into a coherent story.
  15. C. Introspection illusionWe believe we understand the causes of our behaviours and emotions better than we actually do.
  16. B. Hindsight biasThis is the tendency to believe, after the fact, that we had predicted the event or that it was inevitable.
  17. C. It activates selective filteringFaced with overload, the brain uses filters to process only a fraction of the available information.
  18. C. Out-group homogeneity effectWe tend to see members of an outside group as all identical, while perceiving diversity within our own group.
  19. A. The way information is presented changes our judgementPresenting the same situation positively or negatively (e.g.
  20. A. The Zeigarnik effectPsychologist Bluma Zeigarnik reportedly noticed it in Viennese waiters: they remembered unpaid orders, then forgot them as soon as they were settled.

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