Measuring Misperceptions?

Matthew H. Graham

American Political Science Review, 2023, vol. 117, issue 1, 80-102

Abstract: Survey data are commonly cited as evidence of widespread misperceptions and misinformed beliefs. This paper shows that surveys generally fail to identify the firm, deep, steadfast, confidently held beliefs described in leading accounts. Instead, even those who report 100% certain belief in falsehoods about well-studied topics like climate change, vaccine side effects, and the COVID-19 death toll exhibit substantial response instability over time. Similar levels of response stability are observed among those who report 100% certain belief in benign, politically uncontested falsehoods—for example, that electrons are larger than atoms and that lasers work by focusing sound waves. As opposed to firmly held misperceptions, claims to be highly certain of incorrect answers are best interpreted as “miseducated” guesses based on mistaken inferential reasoning. Those reporting middling and low levels of certainty are best viewed as making close-to-blind guesses. These findings recast existing evidence as to the prevalence, predictors, correction, and consequences of misperceptions and misinformed beliefs.

Date: 2023
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