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Encephalization quotient

Encephalization quotient (EQ), encephalization level (EL), or just encephalization is a relative brain size measure that is defined as the ratio between observed and predicted brain mass for an animal of a given size, based on nonlinear regression on a range of reference species.[1][2] It has been used as a proxy for intelligence and thus as a possible way of comparing the intelligence levels of different species. For this purpose, it is a more refined measurement than the raw brain-to-body mass ratio, as it takes into account allometric effects. Expressed as a formula, the relationship has been developed for mammals and may not yield relevant results when applied outside this group.[3]

  1. ^ Pontarotti, Pierre (2016). Evolutionary Biology: Convergent Evolution, Evolution of Complex Traits. Springer. p. 74. ISBN 978-3-319-41324-2.
  2. ^ G.Rieke. "Natural Sciences 102: Lecture Notes: Emergence of Intelligence". Archived from the original on 7 April 2019. Retrieved 12 February 2011.
  3. ^ Moore, J. (1999). "Allometry". University of California, San Diego. Archived from the original on 27 March 2019. Retrieved 5 January 2011.

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