Imagine you have a smoke detector that goes off more often in some houses than others. You might assume those houses have more fires — but what if some detectors are just set to a lower threshold, and some homeowners are simply better at noticing the beeping? That's the core puzzle in the psychology of disgust and politics: people who report higher disgust sensitivity tend to report more conservative views, but we can't tell whether the alarm is detecting a real fire or just calibrated differently. The committed claim across this body of work is modest: disgust sensitivity, particularly to pathogens and sexual behavior, correlates with socially conservative attitudes. A review of 24 studies found the pattern is consistent but small. Psychologist Yoel Inbar of the University of British Columbia frames it as an evolutionary heuristic — pathogen avoidance makes people cautious, and caution maps loosely onto social conservatism. The Three-Domain Disgust Scale (2009) splits disgust into pathogen, sexual, and moral subtypes, and the political link is strongest for sexual disgust. But that's precisely the problem. Inbar himself flags the circularity: sexual disgust questions may already be measuring conservative attitudes about sex. 'It's almost asking people the same thing twice,' he told DW. Meanwhile, the new study from Manos Tsakiris at Royal Holloway introduces interoception — your ability to notice and interpret internal body signals — as a moderating variable. Surveying 632 US adults, they found that moral disgust predicted conservatism only among people with low bodily awareness. High-awareness participants showed no political lean in either direction. The wrinkle is genuinely interesting: it suggests that people who can't read their own bodies may be more susceptible to external labels for their feelings. The ladder problem is severe. A 2020 study by Bert Bakker at the University of Amsterdam failed to reproduce earlier findings that conservatives showed stronger physiological responses (measured by skin conductance) to disgusting images. The self-report data holds up better than the physiological data, which is exactly backwards from what you'd want: objective body measurements show nothing, while subjective questionnaires show a small effect. That pattern is a classic signature of demand characteristics or motivated responding. The integrity picture is mixed. The 24-study review provides meta-analytic weight, but individual studies are mostly cross-sectional surveys — no causal design, no pre-registration mentioned, no longitudinal tracking. The Tsakiris study (N=632) is adequately powered for its main effects but the interoception interaction is novel enough that Inbar explicitly calls it 'suggestive at best' and wants pre-registered replication. The 2020 'Is Disgust a Conservative Emotion?' study usefully showed liberals and conservatives are disgusted by different things (animal abuse vs. sexual behavior), undermining the idea that conservatives are simply more disgust-sensitive overall. The political exploitation angle — that politicians can weaponize ambiguous bodily feelings by labeling them — is the most practically interesting claim and the least tested. Trump's 'poisoning the blood' rhetoric maps contamination language onto immigration policy, but no study cited here directly tests whether such framing actually shifts votes or attitudes. Tsakiris's interoception finding suggests a mechanism (low body-awareness people are more vulnerable to external emotional labeling), but the study didn't test political persuasion directly. The honest summary: after decades of work, the disgust-politics link is real, small, domain-specific, potentially circular in its measurement, and physiologically unconfirmed. The interoception angle is the freshest contribution but needs replication. Every researcher quoted in this piece is admirably cautious. Inbar: 'The relationship, while it's consistent, is quite small.' Bakker: 'Voting behavior is very complex.' The field deserves credit for self-correction, but the gap between the confident public narrative ('conservatives are grossed out more') and the actual evidence is wider than most readers realize.
