{"id":10010,"date":"2021-05-28T16:46:27","date_gmt":"2021-05-28T14:46:27","guid":{"rendered":"https:\/\/semmelweis.hu\/magtud\/?p=10010"},"modified":"2021-05-28T16:47:19","modified_gmt":"2021-05-28T14:47:19","slug":"ujma-scherrer-circadian-preference-and-intelligence-an-updated-meta-analysis","status":"publish","type":"post","link":"https:\/\/semmelweis.hu\/magtud\/2021\/05\/28\/ujma-scherrer-circadian-preference-and-intelligence-an-updated-meta-analysis\/","title":{"rendered":"Ujma and Scherrer: Circadian preference and intelligence \u2013 an updated meta-analysis"},"content":{"rendered":"<p>P\u00e9ter P. Ujma &amp; Vsevolod Scherrer (2021) Circadian preference and intelligence \u2013 an updated meta-analysis, Chronobiology International<\/p>\n<p>DOI: <a href=\"https:\/\/doi.org\/10.1080\/07420528.2021.1926473\">10.1080\/07420528.2021.1926473<\/a><\/p>\n<p>Published online: 20 May 2021<\/p>\n<p>ABSTRACT<\/p>\n<p>A large number of previous studies reported a link between circadian preference and psychometric intelligence with mixed results and various hypotheses about the source of this correlation. In this study, we aimed to update a previous meta-analysis about the correlation between circadian preference and intelligence. Our literature search identified a large number of new studies, resulting in an increase of over 100% in the number of studies and over 400% in the number of involved participants (total k =\u00a030, total N =\u00a011160) over the previous meta-analysis, sampling a much wider age range from children to adults in late middle age. Our meta-analysis revealed no significant link between morningness and intelligence (r\u00a0=\u00a0\u22120.008) when the entire sample was studied, and no evidence for publication bias. This overall effect, however, obscured the moderating effect of age. The morningness-intelligence correlation decreased with mean sample age (R<sup>2<\/sup>\u00a0=\u00a054%), ranging from a non-significant positive trend in children and adolescents to a significant negative correlation after young adulthood. Eveningness was positively correlated with intelligence (r\u00a0=\u00a00.056), but this finding is based on a more age-restricted sample and only reached significance with some model specifications. We hypothesize that the age-moderated correlation between circadian preference and intelligence reflects social effects, where more intelligent individuals are more able to adjust their daily schedules to their natural circadian rhythm.<\/p>\n<p>KEYWORDS: circadian preference, chronotype, IQ, cognitive ability, meta-analysis<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P\u00e9ter P. Ujma &amp; Vsevolod Scherrer (2021) Circadian preference and intelligence \u2013 an updated meta-analysis, Chronobiology International DOI: <a href=\"https:\/\/doi.org\/10.1080\/07420528.2021.1926473\">10.1080\/07420528.2021.1926473<\/a> Published online: 20 May 2021 ABSTRACT A large number of previous studies reported a link between circadian preference and psychometric intelligence with mixed results and various hypotheses about the source of this correlation. In this study, we &hellip;<\/p>\n","protected":false},"author":101277,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[305,303,309,307,311],"class_list":["post-10010","post","type-post","status-publish","format-standard","hentry","category-hirek","tag-chronotype","tag-circadian-preference","tag-cognitive-ability","tag-iq","tag-meta-analysis"],"acf":[],"_links":{"self":[{"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/posts\/10010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/users\/101277"}],"replies":[{"embeddable":true,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/comments?post=10010"}],"version-history":[{"count":2,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/posts\/10010\/revisions"}],"predecessor-version":[{"id":10012,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/posts\/10010\/revisions\/10012"}],"wp:attachment":[{"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/media?parent=10010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/categories?post=10010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/semmelweis.hu\/magtud\/wp-json\/wp\/v2\/tags?post=10010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}