Our Political Nature: The Evolutionary Origins of What Divides Us is a 2013 book by Avi Tuschman.
It proposed an evolutionary theory of human political orientation.
The book theorizes that political leanings are evolutionary adaptations that arise primarily from three clusters of measurable personality traits: tribalism, tolerance of inequality, and perceptions of human nature.
As evidence, Our Political Nature synthesizes studies from the fields of political science, genetics, neuroscience, and primatology.
The book also offers a psychological explanation for why economic stress tends to broaden the divide between political factions.