On the Evolution of Human Synchronization Abilities

This chapter critically examines Bjorn Merker's hypothesis on the evolution of human synchronization abilities, which posits that precise entrainment evolved to enhance the signal strength of male group displays to attract potential mates. While acknowledging the value of Merker's comparative approach, we present counter-arguments, highlighting that human synchronization is egalitarian and emerges early in development, challenging the sexual selection explanation. We propose alternative hypotheses, exploring the role of duetting in pair-bonding and territorial displays, and the significance of synchronized anti-predator behavior in early hominins. We suggest that these factors, potentially in combination, contributed to the evolution in the hominin lineage not just of rhythmic but also harmonic entrainment, ultimately paving the way for music and enhanced social bonding.