On contested factual questions, people's beliefs strongly track those of their social groups.
Assessment
The evidence favors the claim, but the examination is incomplete or the evidence is indirect.
The correlational core of this claim is among the best-replicated findings in public-opinion research. On politically contested factual questions, such as whether human activity is warming the planet, whether vaccines are safe, or whether crime or the economy is improving, answers split sharply along party and cultural-group lines. In the United States the partisan gap on human-caused climate change is commonly several tens of percentage points. Group identity often predicts these beliefs better than education or scientific literacy does, and on some questions greater knowledge widens the gap instead of closing it, as Kahan's cultural-cognition studies report.
Two qualifications matter. First, part of the measured gap is expressive: when respondents are paid for correct answers, partisan differences shrink. Bullock, Gerber, Hill and Huber, and separately Prior, Sood and Khanna, found reductions of roughly half on some items, but substantial gaps remained, and later work suggests the expressive share varies by question. Whether expressive responding accounts for only a modest share of the gaps is the main open point bearing on how strong the tracking is. Second, the claim is about tracking, not cause. Whether group membership produces belief through motivated reasoning, through trust in co-partisan sources, or through people sorting into groups that match their beliefs is a lively debate (Tappin, Pennycook and Rand, among others), but it does not affect the claim as stated. The claim is restricted to contested questions; on uncontested factual matters group differences are small.
Full reasoning: the evidence and decisions behind this verdict
My starting view was that the correlation is robust and the disputes concern magnitude net of expressive responding, and mechanism. Evidence checked: Bullock, Gerber, Hill and Huber, "Partisan Bias in Factual Beliefs about Politics" (NBER w19080, www.nber.org/system/files/working_papers/w19080/w19080.pdf), shows that incentives for accuracy reduce partisan divergence. The paper argues that apparent differences may be partly illusory, but it does not eliminate them. This tempers the word "strongly" without overturning the claim. From background knowledge, not re-read this pass: repeated Pew and Gallup polling shows large partisan gaps on climate attribution and on COVID-19 vaccine safety, and Kahan's cultural-cognition work finds polarization that grows with numeracy. These are well documented and uncontested as descriptive findings. The linked subclaim on the expressive share has not yet been assessed. If it were shown that most of the gap is expressive, the status would fall toward inconclusive on "strongly", though the tracking itself would probably still hold. Credence is 0.88 rather than higher because "strongly" is vague and the size of the sincere gap differs across questions and countries, with most evidence coming from the United States.
Decomposition
The claims this one rests on directly. ↗︎ opens a subclaim; the map shows how they fit together.
The claims this one rests on directly, not gathered into a named line of reasoning.
Large surveys repeatedly find that answers to politically contested factual questions (human-caused climate change, vaccine safety, crime and economic trends) differ sharply by party and cultural group, often more than by education or scientific knowledge, as in Pew polling and Kahan's cultural-cognition studies. Since the claim asserts only that individual beliefs track group beliefs, not why, these replicated gaps establish it, given that such gaps mostly reflect sincere beliefs rather than expressive survey answers.
Cite this claim: a formal citation with its evidence attached
Contribution record · 1 exchange
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Survey research finds that beliefs on politically contested factual questions (for example about climate change, vaccine safety, or economic conditions) are strongly correlated with party identification and group membership, often more strongly than with education or scientific knowledge; Kahan's work on cultural cognition is a prominent example. Correlation leaves open whether group membership shapes belief or belief shapes group choice, and the claim as stated is only about prediction. Its scope is contested factual questions, not factual beliefs generally.
The proposal is a single, reusable, empirically assessable proposition: that on contested factual questions, an individual's belief is strongly predicted by the beliefs of their social group (party, cultural group). It is about the world, not a private person, and there is a substantial literature (cultural cognition, partisan polarization on climate, vaccines and economic perceptions) that affirms or qualifies it. The contributor's supporting text is sincere and on-topic. It also states the scope sensibly: the claim is predictive only, and it leaves causal direction open. The proposed wording is workable. The Matcher and Steward can refine it, for instance by making the predictive scope and the 'contested questions' restriction explicit and by deciding whether 'strongly' needs a measure. Whether the claim is true, and how much 'strongly' means, is for the Steward's assessment. Novelty is the Matcher's call.
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Created by user · Nov 2, 2026. Every judgment on this page is accompanied by a reasoning trace.