{"id":243,"date":"2019-07-26T20:28:13","date_gmt":"2019-07-26T20:28:13","guid":{"rendered":"https:\/\/www.allendowney.com\/blog\/?p=243"},"modified":"2019-07-26T20:28:13","modified_gmt":"2019-07-26T20:28:13","slug":"right-left-apart-together","status":"publish","type":"post","link":"https:\/\/www.allendowney.com\/blog\/2019\/07\/26\/right-left-apart-together\/","title":{"rendered":"Right, left, apart, together?"},"content":{"rendered":"\n<p>Is the United States getting more conservative?  With the rise of the alt-right, Republican control of Congress, and the election of Donald Trump, it might seem so.<\/p>\n\n\n\n<p>Or is the country getting more liberal?  With the 2015 Supreme Court decision supporting same-sex marriage, the incremental legalization of marijuana, and recent proposals to expand public health care, you might think so.<\/p>\n\n\n\n<p>Or maybe the country is becoming more polarized, with moderates choosing sides and partisans moving to the extremes.<\/p>\n\n\n\n<p>In a series of articles, I&#8217;ll use data from the <a href=\"https:\/\/gss.norc.org\/\">General Social Survey<\/a> (GSS) to explore these questions.  The GSS goes back to 1972; every second year they survey a representative sample of U.S. residents and ask questions about their political beliefs.  Many of the questions have been unchanged for almost 50 years, making it possible to observe long-term trends.<\/p>\n\n\n\n<p>In this article, I&#8217;ll look at political alignment, that is, whether the respondents consider themselves liberal or conservative.  In subsequent articles, I&#8217;ll explore their political beliefs on a range of topics.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Political alignment<\/h4>\n\n\n\n<p>From 1974 to the most recent cycle in 2018, the GSS asked <a href=\"https:\/\/gssdataexplorer.norc.org\/projects\/52787\/variables\/178\/vshow\">the following question<\/a>, &#8220;We hear a lot of talk these days about liberals and conservatives.\u00a0<br>I&#8217;m going to show you a seven-point scale on which the political views that people might hold are arranged from extremely liberal&#8211;point 1&#8211;to extremely conservative&#8211;point 7. Where would you place yourself on this scale?&#8221;<\/p>\n\n\n\n<p>The following figure shows the distribution of responses in 1974 and 2018.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"424\" height=\"280\" src=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-1.png\" alt=\"\" class=\"wp-image-245\" srcset=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-1.png 424w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-1-300x198.png 300w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-1-409x270.png 409w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><\/figure>\n\n\n\n<p>In 2018, it looks like there are more 1s (Extremely Liberal) and maybe more 7s (Extremely Conservative).  So this figure provides some evidence of polarization.<\/p>\n\n\n\n<p>We can get a better sense of the long term trend by taking the mean of the 7-point scale and plotting it over time.  By treating this scale as a numerical quantity, I&#8217;m making assumptions about the spacing between the values.  The numbers we get don&#8217;t mean much in absolute terms, but they provide a quick look at the trend.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"424\" height=\"280\" src=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-3.png\" alt=\"\" class=\"wp-image-247\" srcset=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-3.png 424w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-3-300x198.png 300w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-3-409x270.png 409w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><\/figure>\n\n\n\n<p>It looks like the &#8220;center of mass&#8221; was increasing until about 1990, which means more conservative on this scale, and has been decreasing ever since.  On average the country might be a little more conservative now than it was in 1974.<\/p>\n\n\n\n<p>With the same caveat about treating this scale as a numerical quantity, we can also compute the standard deviation, which measures average distance from the mean, as a way of quantifying polarization.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"424\" height=\"280\" src=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-4.png\" alt=\"\" class=\"wp-image-249\" srcset=\"https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-4.png 424w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-4-300x198.png 300w, https:\/\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-4-409x270.png 409w\" sizes=\"auto, (max-width: 424px) 100vw, 424px\" \/><\/figure>\n\n\n\n<p>The trend is clearly increasing, indicating increasing polarization, but with the way we computed these numbers, it&#8217;s hard to get a sense of how substantial the increase is in practical terms.<\/p>\n\n\n\n<p>In the next article, I&#8217;ll look more closely at changes in political alignment over time.<\/p>\n\n\n\n<p>I am planning to turn these articles into a case study for an upcoming Data Science class, so I welcome comments and questions.<\/p>\n\n\n\n<p>The code I used to generate these figures is in <a href=\"https:\/\/nbviewer.jupyter.org\/github\/AllenDowney\/ExploratoryDataAnalysis\/blob\/master\/eds02_gss_polviews.ipynb\">this Jupyter notebook<\/a>.  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is the United States getting more conservative? With the rise of the alt-right, Republican control of Congress, and the election of Donald Trump, it might seem so. Or is the country getting more liberal? With the 2015 Supreme Court decision supporting same-sex marriage, the incremental legalization of marijuana, and recent proposals to expand public health care, you might think so. Or maybe the country is becoming more polarized, with moderates choosing sides and partisans moving to the extremes. In a&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.allendowney.com\/blog\/2019\/07\/26\/right-left-apart-together\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[26,27,16],"class_list":["post-243","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-general-social-survey","tag-political-alignment","tag-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Right, left, apart, together? - Probably Overthinking It<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.allendowney.com\/blog\/2019\/07\/26\/right-left-apart-together\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Right, left, apart, together? - Probably Overthinking It\" \/>\n<meta property=\"og:description\" content=\"Is the United States getting more conservative? With the rise of the alt-right, Republican control of Congress, and the election of Donald Trump, it might seem so. Or is the country getting more liberal? With the 2015 Supreme Court decision supporting same-sex marriage, the incremental legalization of marijuana, and recent proposals to expand public health care, you might think so. Or maybe the country is becoming more polarized, with moderates choosing sides and partisans moving to the extremes. In a... 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The GSS asks respondents where they place themselves on a 7-point scale from \"extremely\u2026","rel":"","context":"In \"data science\"","block_context":{"text":"data science","link":"https:\/\/www.allendowney.com\/blog\/tag\/data-science\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-8.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-8.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/07\/image-8.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":344,"url":"https:\/\/www.allendowney.com\/blog\/2019\/12\/03\/political-alignment-and-beliefs-about-homosexuality\/","url_meta":{"origin":243,"position":1},"title":"Political alignment and beliefs about homosexuality","author":"AllenDowney","date":"December 3, 2019","format":false,"excerpt":"In the United States, beliefs and attitudes about homosexuality have changed drastically over the last 50 years. In 1972, 74% of U.S. residents thought sexual relations between two adults of the same sex were \"always wrong\", according to results from the General Social Survey (GSS). In 2018, that fraction was\u2026","rel":"","context":"In \"general social survey\"","block_context":{"text":"general social survey","link":"https:\/\/www.allendowney.com\/blog\/tag\/general-social-survey\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/12\/image-3.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/12\/image-3.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2019\/12\/image-3.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":1477,"url":"https:\/\/www.allendowney.com\/blog\/2025\/01\/04\/confidence-in-the-press\/","url_meta":{"origin":243,"position":2},"title":"Confidence In the Press","author":"AllenDowney","date":"January 4, 2025","format":false,"excerpt":"This is the fifth in a series of excerpts from Elements of Data Science, now available from Lulu.com and online booksellers. It\u2019s based on Chapter 16, which is part of the political alignment case study. You can read the complete example here, or run the Jupyter notebook on Colab. Because\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2025\/01\/f652e115b3186a827e67d0882df2218fecf3f5466985f3da007a09e983e93aa6.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1311,"url":"https:\/\/www.allendowney.com\/blog\/2024\/06\/14\/should-divorce-be-more-difficult\/","url_meta":{"origin":243,"position":3},"title":"Should divorce be more difficult?","author":"AllenDowney","date":"June 14, 2024","format":false,"excerpt":"\"The Christian right is coming for divorce next,\" according to this recent Vox article, and \"Some conservatives want to make it a lot harder to dissolve a marriage.\" As always when I read an article like this, I want to see data -- and the General Social Survey has just\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2024\/06\/divorce1-2.png?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":753,"url":"https:\/\/www.allendowney.com\/blog\/2022\/08\/22\/off-to-technical-review\/","url_meta":{"origin":243,"position":4},"title":"Off to Technical Review","author":"AllenDowney","date":"August 22, 2022","format":false,"excerpt":"I have news. I finished the last two chapters of Probably Overthinking It last week and sent a complete draft of the book off for technical review. Yay! In the last chapter, I used some methodology I thought was worth reporting, but too technical for the book, which is intended\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/08\/overton3-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":777,"url":"https:\/\/www.allendowney.com\/blog\/2022\/09\/05\/are-we-really-polarized\/","url_meta":{"origin":243,"position":5},"title":"Are we really polarized?","author":"AllenDowney","date":"September 5, 2022","format":false,"excerpt":"I'm working on a book called Probably Overthinking It that is about using evidence and reason to answer questions and guide decision making. If you would like to get an occasional update about the book, please join my mailing list. I'm a little tired of hearing about how polarized we\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.allendowney.com\/blog\/wp-content\/uploads\/2022\/09\/alignment4-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/posts\/243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/comments?post=243"}],"version-history":[{"count":3,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/posts\/243\/revisions"}],"predecessor-version":[{"id":251,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/posts\/243\/revisions\/251"}],"wp:attachment":[{"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/media?parent=243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/categories?post=243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.allendowney.com\/blog\/wp-json\/wp\/v2\/tags?post=243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}