Fig 1. Facial masculinity and offspring mortality in Agta males.

Quadratic association in Agta males [F(2,62) = 6.30, p < 0.001, R² = .17] between facial masculinity ratings corrected for age in photo and offspring mortality due to all causes (proportion dead before 5 years of age) corrected for father’s current age or age at death if deceased. Variables are residuals from masculinity-age in photo and mortality-maximum age regression analyses.