{"id":11907,"date":"2026-10-31T14:47:01","date_gmt":"2026-10-31T14:47:01","guid":{"rendered":"http:\/\/ashadocs.org\/theorists\/john-c-raven-1902-1970-biography-psychometrics\/"},"modified":"2026-10-31T14:47:01","modified_gmt":"2026-10-31T14:47:01","slug":"john-c-raven-1902-1970-biography-psychometrics","status":"publish","type":"psych_theorist","link":"https:\/\/ashadocs.org\/?psych_theorist=john-c-raven-1902-1970-biography-psychometrics","title":{"rendered":"John C. Raven – 1902 1970"},"content":{"rendered":"

+—————————–+
\n | Spearman’s ‘g’ Factor |
\n | (General Cognitive Ability) |
\n +————–+————–+
\n |
\n +———————–+———————–+
\n | |
\n v v
\n+————————-+ +————————-+
\n| Eductive Ability | | Reproductive Ability |
\n| (Pattern Extraction & | | (Acquired Knowledge & |
\n| Relational Synthesis) | | Verbal Crystallization)|
\n+————+————+ +————+————+
\n | |
\n v v
\n+————————-+ +————————-+
\n| Raven’s Progressive | | Mill Hill \/ Crichton |
\n| Matrices | | Vocabulary Scales |
\n+————————-+ +————————-+<\/p>\n","protected":false},"excerpt":{"rendered":"

A comprehensive academic examination of John C. Raven (1902\u20131970), developer of the Progressive Matrices and pioneer of non-verbal cognitive assessment.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","categories":[128,256,2],"tags":[35130,29033,35128,6,35129],"class_list":["post-11907","psych_theorist","type-psych_theorist","status-publish","hentry","category-cognitive-psychology","category-history-of-psychology","category-psychometrics","tag-eductive-ability","tag-intelligence-testing","tag-john-c-raven","tag-psychometrics","tag-ravens-progressive-matrices"],"_links":{"self":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_theorist\/11907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_theorist"}],"about":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/types\/psych_theorist"}],"author":[{"embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11907"}],"version-history":[{"count":0,"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_theorist\/11907\/revisions"}],"wp:attachment":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}