This book investigates the extent to which biological, physiological, and genetic traits influence an individual's political orientation and ideological development. The authors, all established scholars in political science, synthesize data from behavioral genetics and cognitive psychology to argue that political differences are not merely products of environment or information exposure. They present a framework suggesting that innate physio-cognitive machinery shapes how individuals perceive the world, thereby driving much of the persistent conflict observed in human history.

Experts in political science and behavioral studies frequently cite this work as a significant contribution to the study of political psychology. Readers often note the accessible yet rigorous nature of the prose, which bridges complex biological concepts with traditional political theory.