Early Development Signals Innate Sex Differences

Sex differences that appear in rudimentary form before children have substantial social exposure (and before they know their own sex) are evidence that biology nudges male and female development in different directions. Combined with cross‑generational stability and resistance to social pressure, these patterns strengthen the inference of a non‑trivial innate contribution. — If accepted, this framing would shift debates over education, workplace accommodation, and diversity policy from purely socialized explanations toward mixed nature‑and‑nurture models with different policy implications.