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A new study involving 1,500 species shows that larger animals do not have proportionally bigger brains, challenging old views and introducing a curve model for brain-body size relationships, with significant findings in primates, rodents, and carnivores. Credit: SciTechDaily.com
Bigger brains relative to body size are linked to intelligence, sociality, and behavioral complexity – with humans having evolved exceptionally large brains. The new research, published today in, reveals the largest animals do not have proportionally bigger brains, challenging long-held beliefs about brain evolution.
Professor Rob Barton, co-author of the study from Durham University, said: “Our results help resolve the puzzling complexity in the brain-body mass relationship. Our model has a simplicity that means previously elaborate explanations are no longer necessary – relative brain size can be studied using a single underlying model.
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