Cross‑species evidence for sex differences

The article argues that men's greater interest in casual sex is not just a cultural artifact but a robust pattern: it persists across time, appears across many human societies, and is echoed by animal species from primates to insects. These convergent lines of evidence are presented as support for biological contributions to sexual psychology alongside social influences. — If sexual behaviour differences partly reflect evolved tendencies, that changes how policymakers, educators, and activists should frame debates about gendered norms, consent, and inequality.