It's No Coincidence That Hitler Was a Germaphobe
Hitler appeared to have been highly sensitive to disgust, and research shows this trait is linked to numerous dimensions of ideology.
31 May, 2017
Adolph Hitler
<p><span id="docs-internal-guid-a1496f8f-60ab-dc46-d512-28399ff237d1"> </span></p> <p dir="ltr">Hitler seemed obsessed with the idea of infection. The Nazi leader was, by most accounts, a germaphobe who avoided personal contact and <a href="http://spartacus-educational.com/Christa_Schroeder.htm" target="_blank">bathed</a> <a href="http://theseoultimes.com/ST/?url=/ST/db/read.php?idx=8549" target="_blank">incessantly</a>. He was <a href="https://books.google.com/books?id=Xa0bCwAAQBAJ&pg=PT29&lpg=PT29&dq=hitler+repulsed+by+sex&source=bl&ots=QbX7cBdX6Z&sig=aVn07ycfwRpxwwsWEQ4kP1lepvA&hl=en&sa=X&ved=0ahUKEwjb7d2BzJ_UAhXry1QKHfKyDp0Q6AEIUjAH#v=onepage&q=hitler%20repulsed%20by%20sex&f=false" target="_blank">repelled by sex</a>, horrified by venereal disease. He <a href="https://books.google.com/books?id=Xa0bCwAAQBAJ&pg=PT29&lpg=PT29&dq=hitler+repulsed+by+sex&source=bl&ots=QbX7cBdX6Z&sig=aVn07ycfwRpxwwsWEQ4kP1lepvA&hl=en&sa=X&ved=0ahUKEwjb7d2BzJ_UAhXry1QKHfKyDp0Q6AEIUjAH#v=onepage&q=hitler%20repulsed%20by%20sex&f=false">referred to himself as an <em>Einsiedler</em></a> – a hermit. He extolled the virtues of celibacy and <a href="http://www.historyinanhour.com/2011/02/18/hitlers-women/" target="_blank">claimed prostitution was for inferior races</a>, though some have proposed Hitler himself <a href="http://www.medicalnewstoday.com/releases/74776.php">contracted syphilis from a Jewish prostitute</a> in Vienna in 1908. </p> <p dir="ltr"><span>It was in ideology, however, where Hitler's obsession with infection thrived, becoming the essential Nazi metaphor: <strong>Germany was the body, Jews were the parasites</strong>. <br><br>Examples are abundant in his speeches and writings:</span></p> <p dir="ltr"><strong><em>“How many diseases have their origin in the Jewish virus! We shall regain our health only be eliminating the Jew.”</em></strong></p> <p dir="ltr"><strong><em> “Anyone who wants to cure this era, which is inwardly sick and rotten, must first of all summon up the courage to make clear the causes of this disease.”</em></strong></p> <p dir="ltr"><strong><em>“This is the battle against a veritable world sickness which threatens to infect the peoples, a plague that devastates whole peoples...an international pestilence.”</em></strong></p> <p dir="ltr"><strong><em>“The Jew is a parasite in the body of other nations.”</em></strong></p> <p dir="ltr"><strong><em><strong><em>“</em></strong>Germany, without blinking an eyelid, for whole decades admitted these Jews by the hundred thousand. But now… when the nation is no longer willing to be sucked dry by these parasites, on every side one hears nothing but laments.<strong><em>”</em></strong><br></em></strong></p> <p dir="ltr"><strong><em>“If this battle should not come...Germany would decay and at best sink to ruin like a rotting corpse.”</em></strong></p> <p dir="ltr">Do Hitler's germaphobic tendencies and obsession with the infection metaphor reveal anything about his personality traits? While it's impossible to know for sure, it seems likely that he was <strong>highly sensitive to disgust.</strong></p> <p dir="ltr"><strong> </strong>Over the past couple of decades, studies have linked disgust sensitivity to numerous <a href="http://bigthink.com/videos/kathleen-mcauliffe-moral-disgust-and-visceral-disgust-are-the-same-thing" target="_blank">dimensions of ideology</a> – immigration, political affiliation, sense of justice. If Hitler ranked high on the <a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">disgust scale</a>, there were probably deeply rooted psychological forces lurking underneath his xenophobia and murderous fantasies that research on the behavioral immune system might help bring to light.</p> <p dir="ltr"><strong>How disgust relates to personality and ideology</strong></p> <p>Disgust is a <a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">protective emotion</a>. It causes us to lurch back from a rotten apple, or take an extra big step over dog poop on the sidewalk. These reactions are part of the <a href="https://www.scientificamerican.com/article/the-behavioral-immune-system/" target="_blank">behavioral immune system</a>, which evolved to help us detect and avoid things in our environment that cause disease. That’s why we find some things universally repulsive – urine, feces, vomit. </p> <p><span class="sumo_twilighter_highlighted twilighter-3bf45bbf">What’s strange, however, is that an acute sense of disgust can extend beyond these things and </span><a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">into the social world</a>, causing some to feel repulsed by certain ethnic groups. This might have once served an evolutionary function: In earlier times, it was probably useful to be wary of <a href="https://newrepublic.com/article/126837/donald-trump-politics-disgust" target="_blank">unfamiliar individuals or groups</a> because they might have carried disease.</p> <p>Today, this same evolutionary function might be playing a role in the immigration debate. According to a <a href="http://pure.au.dk/portal/files/107202306/The_Behavioral_Immune_System_Shapes_Political_Intuitions_Aar_e_Petersen_Arceneaux_APSR.pdf" target="_blank">recent paper</a>, people who are acutely sensitive to disgust are <strong>more likely to oppose immigration</strong>. The researchers explained:</p> <blockquote>
<p>It is the presence of <strong><em>physically and culturally</em> <em>distinct immigrants</em></strong> that poses a threat to individuals concerned about pathogens, not the intentions of the immigrants. Second, individuals motivated by pathogen avoidance are especially motivated to avoid contact with immigrants, potentially preventing the sorts of experiences that may engender tolerance. Taken together, these findings demonstrate that the behavioral immune system emerges as a potent—and distinct—obstacle to inclusive attitudes and tolerance.</p>
</blockquote> <p>Other studies have linked high disgust sensitivity to:</p> <ul class="ee-ul"> </ul><li><span id="docs-internal-guid-a1496f8f-40d9-f6e8-5fa6-0357150f3bbf"><a href="http://journals.sagepub.com/doi/abs/10.1177/1948550611429024">Support for conservative ideology</a></span></li> <li>Personality types that value <a href="https://blogs.scientificamerican.com/beautiful-minds/the-personality-of-political-correctness/" target="_blank">order and tradition</a></li> <li><span id="docs-internal-guid-a1496f8f-40d9-ce18-424a-0c3c40bbaf9e"><a href="http://psycnet.apa.org/index.cfm?fa=buy.optionToBuy&id=2016-31609-001">The desire to strongly condemn moral violations</a></span></li> <li>Opposition to <a href="https://www.ncbi.nlm.nih.gov/pubmed/19485621">gay marriage</a> and <a href="https://static1.squarespace.com/static/4ff4905c84aee104c1f4f2c2/t/5900be151e5b6cdb156fc4db/1493220885835/pathogens_politics.pdf">abortion</a></li> <p dir="ltr"><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQxMDAwMi9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY0NTIyMDAyNn0.HhBHZm2qHkVUgLcdX2OGZ95_XhthPZBt3bWXL2GwCzI/img.png?width=980" id="2a890" class="rm-shortcode" data-rm-shortcode-id="7b78a9178a60af8ce33bb235132bd55c" data-rm-shortcode-name="rebelmouse-image"></p> <p dir="ltr"><em>(<a href="https://static.squarespace.com/static/4ff4905c84aee104c1f4f2c2/t/5084d57ee4b066390d1616c9/1350882686625/Inbar%20Pizarro%20Iyer%20Haidt%20Disgust%20and%20Voting%20proofs.pdf" target="_blank">Source</a>)</em></p> <p dir="ltr">Hitler arguably qualifies for almost every dimension to which high disgust sensitivity is linked. <a href="https://jordanbpeterson.com/" target="_blank">Professor of Psychology Jordan Peterson</a> elaborates on the connection between disgust and Nazism in the video below, about an hour into the lecture:</p> <p><span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="fdc93edba325466d220803efa27e4f33"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/MBWyBdUYPgk?start=6345&rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span></p> <p dir="ltr">Still, how could one leader's disgust-oriented rhetoric have influenced an entire country? </p> <p dir="ltr"><strong>Metaphor and the Final Solution</strong></p> <p dir="ltr"><em>The Jew is the parasite of humanity. He can be a parasite for an individual person, a social parasite for whole peoples, and the world parasite of humanity. – Excerpt from "<a href="http://research.calvin.edu/german-propaganda-archive/weltparasit.htm" target="_blank">The Jew as World Parasite</a>," a Nazi propaganda pamphlet</em><strong><br></strong></p> <p dir="ltr">The use of metaphoric language in Nazi Germany has been studied at length since the end of World War II. On a psychological level, <a href="http://www.npr.org/2011/03/29/134956180/criminals-see-their-victims-as-less-than-human" target="_blank">the dehumanization of the Jewish population through language</a> was crucial in carrying out the Final Solution because deeming the Jews to be rats or parasites made extermination the logical and “necessary” course of action.</p> <p><span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="d94f82ccd7bc5047507a1f57f2ec4692"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/U2Iazwru7yE?start=6345&rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span></p> <p dir="ltr"><em>(A Nazi propaganda video compares the Jewish population to rats and parasites)</em></p> <p>Some have considered the Nazi use of metaphorical language to be a “rhetorical trick,” a cynical manipulation of the cultural conversation to advance a murderous fantasy. But others, like Andreas Mulsoff, who penned <em><a href="https://www.amazon.com/Metaphor-Nation-Holocaust-Routledge-Discourse/dp/1138810037" target="_blank">Metaphor, Nation and the Holocaust</a></em>, thought Hitler’s parasite metaphor sat at the bedrock of his ideology, conveying his “fundamental cognitive processes” and serving as an “integral part of the ideology that made the holocaust happen.”</p> <p dir="ltr">In his essay <em><a href="https://www.libraryofsocialscience.com/assets/pdf/Bein-The_Jewish_Parasite.pdf" target="_blank">The Jewish Parasite</a></em>, Alex Bein argues that Nazi ideology captivated the German people through repeated use of words and concepts that eventually led to “belief in the reality of a fantasy.” Richard A. Koenigsberg, author of the seminal <em><a href="https://www.libraryofsocialscience.com/books/hitlers-ideology/">Hitler's Ideology</a></em>, <a href="https://www.libraryofsocialscience.com/newsletter/posts/2015/2015-03-23-rak_metaphor.html" target="_blank">elaborated</a>:</p> <blockquote>
<p dir="ltr"><span>“In language, Bein explains, thoughts and conceptions are mirrored. Nazism crept into the flesh and blood of the masses by means of “single words, terms and phrases, and stock expressions” which, imposed upon the people a million times over in continuous reiteration, were “mechanically and unconsciously absorbed by them.” The presentation of Jews as corroding and poison parasites as vermin, bacteria and bacilli—everywhere infecting and striving to destroy the body of the German people— “paralyzed any internal resistance on the part of the masses.””</span></p>
</blockquote> <p dir="ltr"><span><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQxMDAwMy9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY3MzAxMjQzN30.G4QsgFVwemG0blLTwkCd8S2Metw0fSW-420btRViP7o/img.png?width=980" id="11a63" class="rm-shortcode" data-rm-shortcode-id="4a6f36b26f95886a13d6dc9e73753db1" data-rm-shortcode-name="rebelmouse-image"><br></span></p> <p dir="ltr"><em>(Anti-Semetic Nazi propaganda)</em></p> <p dir="ltr">A recent study suggests that disgust-oriented language can wield surprising power over our biases. Researchers<span> </span><a href="http://pure.au.dk/portal/en/persons/lene-aaroee%2528d3f852cb-fd5d-46d7-b58d-0a6813a0db3c%2529.html">Lene Aaroe</a><span>, </span><a href="http://pure.au.dk/portal/en/persons/michael-bang-petersen%25287998cc16-75d5-4065-8b6e-395d73e22151%2529.html">Michael Bang Petersen</a><span> and </span><a href="http://www.cla.temple.edu/politicalscience/faculty/kevin-arceneaux/">Kevin Arceneaux</a> asked two groups of participants to read a passage about a hospital employee coming in contact with bodily fluids. The passage given to one group, however, included an addition part in which the hospital employee thoroughly washes his hands. <strong>Anti-immigration sentiment dropped by 47 percent among this group</strong>, leading researchers to claim:</p> <blockquote>
<p dir="ltr"><span id="docs-internal-guid-a1496f8f-40ca-de16-e96c-7b1b98349b57">[Pathogen avoidance] plays a causal role in the formation of immigration attitudes and because hand washing is not logically connected with immigration attitudes, it ostensibly does so outside of one’s conscious awareness.</span></p>
</blockquote> <p dir="ltr"><span>The findings imply that <strong>threats of actual infection need not be present</strong> in order for our sense of disgust to unconsciously affect how we see groups of people. Mere language can accomplish that.</span></p> <p dir="ltr"><span> </span></p> <div class="video-full-card-placeholder" data-slug="robert-sapolsky-our-moral-judgements-are-frequently-flawed-thanks-to-evolution" style="border: 1px solid #ccc;">
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People Who Are Easily Disgusted Tend To Oppose Immigration, Study Finds
A new study suggests that sensitivity to the emotion of disgust affects one's attitudes on immigration.
25 May, 2017
A Donald Trump supporter protests – photo by Spencer Platt
A recent study shows that people who are easily disgusted are more likely to hold anti-immigration views. The findings are just the latest in a growing body of research on how disgust sensitivity affects human values and behavior.
<p><span id="docs-internal-guid-a1496f8f-40d7-36b3-fae9-97b41e0aac53"> </span></p> <p dir="ltr">First, why would disgust have anything to do with opinions on immigration?</p> <p dir="ltr">Disgust is a <a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">protective emotion</a>. It causes us to lurch back from a rotten apple, or steer far away from dog poop on the sidewalk. These reactions are part of the <a href="https://www.scientificamerican.com/article/the-behavioral-immune-system/" target="_blank">behavioral immune system</a>, which evolved to help us detect and avoid things in our environment that cause disease. That’s why we find some things universally repulsive – urine, feces, vomit.</p> <p dir="ltr">What’s strange, however, is that our sense of disgust can extend beyond these things and <a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">into the social world</a>, causing some of us to feel repulsed by certain ethnic groups, homosexuality or social behavior. And because disgust is a protective emotion, it's not surprising that many people high in disgust sensitivity are conservative. Over the past two decades, studies have shown that individuals who are easily disgusted are more likely to:</p> <ul class="ee-ul"> </ul><li><span id="docs-internal-guid-a1496f8f-40d9-f6e8-5fa6-0357150f3bbf"><span><a href="http://journals.sagepub.com/doi/abs/10.1177/1948550611429024">Support conservative political parties</a> and ideology</span></span></li> <li>Oppose gay <a href="https://www.ncbi.nlm.nih.gov/pubmed/19485621">marriage</a>, <a href="https://static1.squarespace.com/static/4ff4905c84aee104c1f4f2c2/t/5900be151e5b6cdb156fc4db/1493220885835/pathogens_politics.pdf">abortion</a> and <a href="https://psmag.com/news/the-biology-based-roots-of-anti-immigrant-bias">immigration</a></li> <li><span id="docs-internal-guid-a1496f8f-40d9-ce18-424a-0c3c40bbaf9e"><a href="http://psycnet.apa.org/index.cfm?fa=buy.optionToBuy&id=2016-31609-001"><span>Strongly condemn moral violations</span></a></span></li> <p><a href="http://pure.au.dk/portal/files/107202306/The_Behavioral_Immune_System_Shapes_Political_Intuitions_Aar_e_Petersen_Arceneaux_APSR.pdf" target="_blank">This recent paper</a>, authored by researchers <a href="http://pure.au.dk/portal/en/persons/lene-aaroee%2528d3f852cb-fd5d-46d7-b58d-0a6813a0db3c%2529.html">Lene Aaroe</a>, <a href="http://pure.au.dk/portal/en/persons/michael-bang-petersen%25287998cc16-75d5-4065-8b6e-395d73e22151%2529.html">Michael Bang Petersen</a> and <a href="http://www.cla.temple.edu/politicalscience/faculty/kevin-arceneaux/">Kevin Arceneaux</a>, provides the best evidence yet that disgust sensitivity plays a causal role in shaping opinions on immigration. The researchers surveyed four sets of participants in the U.S. and Denmark to analyze the relationship between anti-immigration sentiment and disgust sensitivity. </p> <p><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQwOTk4OC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY2NzQ2OTU3Nn0.1IteiPGXN2e0a4_SBlBuv37P284wO1Xdpbv7wbgKUcg/img.png?width=980" id="a6f51" class="rm-shortcode" data-rm-shortcode-id="9631124d372fa43b782027ac0a51b0d6" data-rm-shortcode-name="rebelmouse-image"></p> <p dir="ltr"><span>To measure immigration attitudes, researchers asked participants to rate their level of agreement with statements like </span><em>“Immigrants improve American (or Danish) culture by bringing in new ideas and cultures.”</em></p> <p dir="ltr">Disgust sensitivity was measured similarly with statements such as <em>“I never let any part of my body touch the toilet seat in public restrooms.” </em>In addition, a small group of students participated in a study that measured disgust sensitivity through skin conductance while they viewed images related to infection and disease.</p> <p dir="ltr"><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQwOTk4OS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYzODM4NjAyM30.gbxBWjEKztn1EtfgDfXU7SmJS3A_SNkGCDNXG3KpFNQ/img.png?width=980" id="30a29" class="rm-shortcode" data-rm-shortcode-id="1d737a257702ede1a44f23d3a66c8a0c" data-rm-shortcode-name="rebelmouse-image"></p> <p dir="ltr">The findings clearly showed that people with a high sensitivity to disgust, no matter where they're from, are more likely to hold anti-immigration views.</p> <p dir="ltr">But perhaps the strangest finding came from a study in which two groups of participants were asked to read a passage that described a hospital employee coming in contact with bodily fluids. The passage given to one group, however, included an extra part in which the hospital employee thoroughly washes his hands. Anti-immigration sentiment dropped by 47 percent among this group, leading researchers to effectively rule out concerns that "the effects of pathogen avoidance are spurious," <a href="http://pure.au.dk/portal/files/107202306/The_Behavioral_Immune_System_Shapes_Political_Intuitions_Aar_e_Petersen_Arceneaux_APSR.pdf" target="_blank">adding</a>:</p> <blockquote>
<p dir="ltr"><span id="docs-internal-guid-a1496f8f-40ca-de16-e96c-7b1b98349b57"><span>[Pathogen avoidance] plays a causal role in the formation of immigration attitudes and because hand washing is not logically connected with immigration attitudes, it ostensibly does so outside of one’s conscious awareness. </span></span></p>
</blockquote> <p dir="ltr">Overall, the results of the paper are unsettling for two main reasons:</p> <blockquote>
<p dir="ltr">It is the presence of physically and culturally distinct immigrants that poses a threat to individuals concerned about pathogens, not the intentions of the immigrants. Second, individuals motivated by pathogen avoidance are especially motivated to avoid contact with immigrants, potentially preventing the sorts of experiences that may engender tolerance. Taken together, these findings demonstrate that the behavioral immune system emerges as a potent—and distinct—obstacle to inclusive attitudes and tolerance.</p>
</blockquote> <p dir="ltr">These newly articulated obstacles shed light on how complex the immigration predicament is in countries like <a href="http://www.cnbc.com/2017/02/08/europes-fear-of-muslim-immigration-revealed-in-widespread-survey.html" target="_blank">Germany, France</a> and the U.S. The research indicates that anti-immigration sentiment might be less related to the empirical problems immigrants pose, and more of a deeply rooted evolutionary response. Cultural or <a href="https://thinkprogress.org/poll-americans-anti-immigrant-attitudes-are-fueled-by-racism-30968b83a908" target="_blank">moral failures</a>, it seems, don't fully explain the vehement opposition. <br><br>Of course, this isn't to say that there's never a rational, empirical case to be made against immigration. But given the fact that there's a large variance in disgust sensitivity across populations, it begs the question: Are discussions between liberals and conservatives about immigration a waste of time?</p> <p dir="ltr"><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQwOTk5MC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1MzAwNzg4Mn0.FKC1MPbtwv2AtE2Gk194Ga1ZCUJ8FR4LRc7DNuddELc/img.jpg?width=980" id="c5b70" class="rm-shortcode" data-rm-shortcode-id="fb95a1b518e250bbc4ca1d733ae75013" data-rm-shortcode-name="rebelmouse-image"></p> <p dir="ltr"><em>(May Day protestors march in Washington, D.C., photo by Jim Watson)</em><br><br>Maybe not. The study authors wrote:</p> <blockquote>
<p dir="ltr">It is plausible that the increased familiarity following substantial and continuous personal contact leads individuals to stop categorizing immigrants as pathogen threats. In this way, ethnic tolerance may turn out to be an “acquired taste.”</p>
</blockquote> <p dir="ltr">The key question seems to be: How might the public conversation about immigration change if more people knew about disgust and the behavioral immune system?</p> <p dir="ltr">As psychologists continue to study how personality traits affect ideological beliefs, it seems increasingly unproductive to write off all opponents of immigration as racists or xenophobes. They exist, sure. But in some cases, it might be <em>just as valid</em> to blame <span>tuberculosis or leprosy.</span></p> <p dir="ltr"><em>If you're interested in finding out how sensitive you are to disgust, you can visit <a href="http://www.yourmorals.org/explore.php" target="_blank">YourMorals.org</a> and fill out the Disgust Scale that was developed by psychologists <a href="http://people.stern.nyu.edu/jhaidt/disgustscale.html" target="_blank">Jonathan Haidt, Clark McCauley and Paul Rozin</a>.</em></p>
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Have a Threshold for Disgusting Things? Find Out – Because It Reveals a Lot About You
How easily grossed out are you? Your sensitivity to disgust reveals more about you than you'd probably be comfortable with, from how you'll vote in this election to your potential to be a cold-blooded killer.
21 September, 2016
Who do you think has a stronger stomach: a liberal or a conservative? Who is the tougher party?
<p>The knee-jerk answer to this question might lean toward the latter, because conservative political ideologies – on the whole – are perceived by both sides as taking a harder line. But what brain circuits are stirring beneath those hardline decisions?</p>
<p>An international team of researchers conducted <a href="http://spp.sagepub.com/content/3/5/537.abstract">two studies</a> (involving more than 31,000 people in total) and found a positive relationship between sensitivity to disgust and political conservatism. "Across both samples, contamination disgust, which reflects a heightened concern with interpersonally transmitted disease and pathogens, was most strongly associated with conservatism," the study reports. </p>
<p>Disgust is a sliding scale, and we’re all grossed out by different things. Some of us shudder at the thought of seeing blood. Some draw the line at foul smells. There are people who are disgusted by homosexuality and there are people are disgusted by homophobia. And there are a few groups who have almost no sensitivity to disgust at all.</p>
<p>Science journalist Kathleen McAuliffe knows a lot about disgust. She took us on a wonderful tour of parasites <a href="http://bigthink.com/videos/kathleen-mcauliffe-on-parasites-ability-to-manipulate-behavior">here</a>, and in the video above she tackles the link between visceral disgust and moral disgust. It’s hard for the average person to fathom how someone can decide to kill in cold blood, and also physically carry out the act. But research has found that cold-blooded killers have damage to the brain circuits involved in the disgust response, which explains why these people are less squeamish about not just the moral quandary of taking a life but are also quite comfortable carrying out the grizzly act.</p>
<p>McAuliffe points to another group of individuals who have similarly impaired disgust circuits: people with Huntington’s disease. This is a genetically transmitted neurodegenerative disease, and those with it are unable to recognize expressions of disgust in others, and don’t tend to react to foul smells, sights or tastes. People with Huntington’s also have impaired fear recognition, as the two areas are closely related in the brain. </p>
<p>Which brings us back to conservative political ideologies, particularly immigration aversion. McAuliffe notes that there is a link between germophobia and xenophobia, as evidenced by a study of 2000 Danish people and 1200 Americans, where the data showed that opposition to immigration increased in direct proportion to the disgust sensitivity of the individual.</p>
<p>If you want to see where you sit on the disgust sensitivity scale, there’s a quiz for your amusement over <a href="https://www.helloquizzy.com/quizzy/take">here</a>.</p>
<p>Kathleen McAuliffe's book is <a href="http://www.indiebound.org/book/9780544192225"><i>This Is Your Brain on Parasites: How Tiny Creatures Manipulate Our Behavior and Shape Society</i></a>.</p> <p><img height="150" src="%5Cr%5Cnhttps://s3.amazonaws.com/edge-misc-assets/Book+Covers/Kathleen+McAuliffe+2016" width="225"></p>
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