Matthew C. Nitschke

This study uses agent-based models to explore how a male-biased sex ratio influenced the shift from promiscuity to pair bonding in human evolution.

The paper presents a mathematical model showing how longer male fertility duration can maintain Fisher's equilibrium offspring sex ratio despite lower annual fertility rates in men.

The paper models the evolution of human pair bonds by simulating male mating strategies under different sex ratio conditions and finds that higher sex ratios favor mate-guarding over multiple mating.