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Scientists investigating human sperm competition stumble upon an intriguing paradox: Men who thought their partner was more likely to spend time with other men produced ejaculates with more sperm

www.psypost.org Scientists investigating human sperm competition stumble upon an intriguing paradox

Men who suspect their female partners have more male friends produce ejaculates with higher sperm concentration—yet paradoxically, those who believe in their partner’s faithfulness generate sperm that move faster.

Scientists investigating human sperm competition stumble upon an intriguing paradox
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