Intelligence is both Fluid and Crystallised
5 min readJun 27, 2019
British psychologist Raymond Cattell introduced the concepts of fluid and crystallized intelligence in the early 1940s.
Over 45? Feeling increasingly irrelevant at work?
Sounding Board for Visionary Leaders ready to make a Massive Impact. Daily posts here, or https://tommccallum.com/newsletter-sign-up/