Show Summary Details
Page of

date: 21 January 2022

p. 555. Reasoninglocked

p. 555. Reasoninglocked

  • Richard Passingham


Why do different intellectual abilities tend to cluster together? Do we think in language? Why are human beings so intelligent? ‘Reasoning’ considers these questions by looking at the processes involved in non-verbal problem solving, spatial relations, thought, and language. Fluid reasoning, needed for IQ tests, depends on the dorsal executive system. Reasoning with verbal material involves the semantic system and also engages the parietal cortex. One reason for human intelligence is that humans are taught in a language, meaning that they inherit knowledge and understanding cumulatively. This is possible because of the expansion of non-primary areas in the human brain: the language areas, semantic system, and dorsal executive system, and in the prefrontal cortex.

Access to the complete content on Very Short Introductions online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.