What is the Myth of Knowledge?
People believe they know more than they actually do; confidence ≠ correctness.
Key finding of Motta et al. (2018)
People overestimate their understanding on topics like vaccines and autism.
What is an explanation as a psychological construct?
A mental construction that gives an ‘aha!’ feeling but must be simpler than what it explains.
What is Bonini’s paradox?
Explanations must be simpler than the phenomena they explain.
What is the Illusion of Explanatory Depth (IOED)?
People think they understand everyday objects more deeply than they actually do.
Procedure of IOED
Rate understanding → explain → re-rate → read expert explanation → retroactively re-rate.
Why does IOED occur?
People misattribute knowledge to objects and confuse levels of analysis.
Does IOED apply to factual knowledge?
No, it mainly occurs with mechanistic explanations.
What is the Illusion of Factual Knowledge?
People think they know more after internet searches even if they learned nothing.
What is the ‘Google Galileo’ effect?
Searching the internet inflates confidence without increasing knowledge.
What is the allure of simplicity?
People prefer simpler explanations even when less accurate.
Example of simplicity bias
Symptoms: fatigue, weight gain → simple: pregnancy; complex: multiple medical causes.
Conclusion I of IOED
People overestimate ability to explain; prefer oversimplified explanations; internet inflates confidence.
What is the Illusion of Argument Justification?
People overestimate quality of arguments for issues they care deeply about.
Effect of emotional involvement on argument illusion
Greater emotional investment increases the illusion.
Conclusion II: Illusion of Argument Justification
People think they can justify views better than they can.
What is Cultural Cognition?
People interpret facts according to identity/worldview, not evidence.
Results of Kahan et al. studies
People polarize even when given identical information.
Conclusion III: Cultural Cognition of Risk
Risk perception is subjective and identity-driven.
Define Aha! Experience
Feeling of sudden insight even when explanation is inaccurate.
Define Epistemic Illusion
Overconfidence about what one knows or understands.
Define Mechanistic Understanding
Understanding how a causal system works, often overestimated.
