The encephalization quotient ( EQ ) of dinosaurs, a measure of brain size calculated using brain endocasts, varies on a spectrum from bird-like to reptile-like.
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Birds appear to have undergone an alternate process of encephalization, as they diverged from the other archosaurs, with few clear parallels to that experienced by mammals and their therapsid ancestors.
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The " Encephalization Quotient " ( EQ ) is the ratio of " C " over the expected value for " C " of an animal of given weight " S ".
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Comparison of a particular animal's brain size with the expected brain size based on such an analysis provides an encephalization quotient that can be used as an indication of animal intelligence.
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Comparison of a particular animal's brain size with the expected brain size based on such allometric analysis provides an encephalization quotient that can be used as another indication of animal intelligence.
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The raw brain-to-body mass ratio is however simpler to come by, and is still a useful tool for comparing encephalization within species or between fairly closely related species.
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Dolphins and other cetaceans use human-understandble music, have the second-largest encephalization quotient in all of Animalia, and some evidence of human-cetacean communication is potentially documented.
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In the essay " Bligh's Bounty ", Stephen Jay Gould noted that if one looks at vertebrates with very low encephalization quotient, their brains are slightly less massive than their spinal cords.
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However, I listened from 41 : 00 to 47 : 00 and she didn't come anywhere close to mentioning sheep or encephalization quotient .-- feed me 10 : 59, 12 July 2009 ( UTC)
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A study by Grant R . Hurlburt, Ryan C . Ridgely and Lawrence Witmer would obtain estimates for Encephalization Quotients ( EQs ), based on reptiles and birds, as well as estimates for the ratio of cerebrum to brain mass.
