The Nature-Nurture-Nietzsche Newsletter

The Nature-Nurture-Nietzsche Newsletter

Are Sex Differences Sexist?

Spoiler alert: No

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Steve Stewart-Williams
Nov 19, 2025
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In Case You Missed It…

  • 12 Things Everyone Should Know About the Psychology of Conspiracy Theories

  • The War on Sex Differences

  • 12 New Findings on Love and Romance


This is the third excerpt from my book, A Billion Years of Sex Differences. You can find the full collection here, and you can pick up a copy of the book here.

In this installment, we’ll ask whether claims about sex differences are inherently sexist. Among other things, we’ll explore:

  • Three logical fallacies that fuel concerns about sex-differences claims

  • Why differences are not deficiencies

  • When calling claims about sex differences “sexist” itself becomes sexist

  • The contradiction in claiming to celebrate diversity and differences yet bristling whenever anyone points any out

  • Why the science of sex differences often paints a more negative picture of men than of women

For what it’s worth, this is one of my favorite pieces of writing I’ve ever produced. I hope you enjoy it!

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