{"id":4971,"date":"2015-03-22T02:59:36","date_gmt":"2015-03-22T01:59:36","guid":{"rendered":"http:\/\/emilkirkegaard.dk\/en\/?p=4971"},"modified":"2016-11-22T06:31:48","modified_gmt":"2016-11-22T05:31:48","slug":"spearmans-hypothesis-on-item-level-data-from-ravens-standard-progressive-matrices-a-replication-and-extension","status":"publish","type":"post","link":"https:\/\/emilkirkegaard.dk\/en\/2015\/03\/spearmans-hypothesis-on-item-level-data-from-ravens-standard-progressive-matrices-a-replication-and-extension\/","title":{"rendered":"Spearman&#8217;s hypothesis on item-level data from Raven&#8217;s Standard Progressive Matrices: A replication and extension"},"content":{"rendered":"<p class=\"western\">Emil O. W. Kirkegaard<a class=\"sdfootnoteanc\" href=\"#sdfootnote1sym\" name=\"sdfootnote1anc\"><sup>1<\/sup><\/a><\/p>\n<p class=\"western\"><b>Abstract<br \/>\n<\/b>Item-level data from Raven\u2019s Standard Progressive Matrices was compiled for 12 diverse groups from previously published studies. Jensen\u2019s method (method of correlated vectors) was used on every possible pair of groups with available data (45 comparisons). The mean Jensen coefficient was about .50. Very few were negative. Spearman\u2019s hypothesis is confirmed for item-level data from the Standard Progressive Matrices, but interpretation is unclear.<\/p>\n<p class=\"western\"><b>K<\/b><b>ey words<\/b>: Raven&#8217;s Progressive Matrices, IQ, intelligence, Spearman\u2019s hypothesis, method of correlated vectors, Jensen\u2019s method<\/p>\n<div id=\"sdfootnote1\">\n<p class=\"sdfootnote\"><strong>Files: <\/strong>https:\/\/osf.io\/ef6vb\/<\/p>\n<p class=\"sdfootnote\"><a class=\"sdfootnotesym\" href=\"#sdfootnote1anc\" name=\"sdfootnote1sym\">1 <\/a>University of Aarhus. Email: <a href=\"mailto:emil@emilkirkegaard.dk\">emil@emilkirkegaard.dk<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Emil O. W. Kirkegaard1 Abstract Item-level data from Raven\u2019s Standard Progressive Matrices was compiled for 12 diverse groups from previously published studies. Jensen\u2019s method (method of correlated vectors) was used on every possible pair of groups with available data (45 comparisons). The mean Jensen coefficient was about .50. Very few were negative. Spearman\u2019s hypothesis is [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1839,2591],"tags":[2125,2124,2253,2036,1979,2252,2123],"class_list":["post-4971","post","type-post","status-publish","format-standard","hentry","category-psychometics","category-intelligence-iq-cognitive-ability","tag-group-differences","tag-item-level","tag-jensens-method","tag-method-of-correlated-vectors","tag-r","tag-ravens-progressive-matrices","tag-spearmans-hypothesis","entry"],"_links":{"self":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/4971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/comments?post=4971"}],"version-history":[{"count":27,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/4971\/revisions"}],"predecessor-version":[{"id":6316,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/posts\/4971\/revisions\/6316"}],"wp:attachment":[{"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/media?parent=4971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/categories?post=4971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/emilkirkegaard.dk\/en\/wp-json\/wp\/v2\/tags?post=4971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}