2min chapter

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#520 - Robin Dunbar - The Evolutionary Psychology Of Love

Modern Wisdom

CHAPTER

Is There a Positive Effect of Stress on Fertility in Mammals?

There's an inverted U shape relationship between female fertility, average female fertility and the size of the group. The offset of the bigger group with extra protection is better than it would be if you were able to have tons of kids. But there just comes a point where these negative effects on fertility start to overwhelm the positive effects. And we know that psychological stress suppresses fertility.

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