The bigger the brain, the more intelligent a mammalian species is. Developing a large brain, though, requires a huge energy input. The females of many large-brained animal species are therefore reliant on the help of other group members to care for their young. Researchers at the University of Zurich have now demonstrated that larger brains particularly develop in animal species in which fathers assist mothers, for only the help of fathers is dependable.
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Sunday, June 2, 2019
Fathers aid development of larger brains
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