"A groundbreaking analysis of what used to be an impenetrable mystery: how and why do cultures differ? Why are clocks in Germany always correct, while those in Brazil are frequently wrong? Why are Singaporeans jailed for selling gum?

Why do women in New Zealand have three times the sex of females worldwide? Why was the Daimler-Chrysler merger ill-fated from the start? And why does each generation of Americans give their kids weirder and weirder names?

Curious about the answers to these and other questions, award-winning social psychologist Michele Gelfand has spent two decades studying both tight societies (with clearly stated rules and codes of ethics) and loose societies (more informal communities with weak or ambiguous norms). Putting each under the microscope, she conducted research in more than fifty countries and collaborated with political scientists, neuroscientists, computer scientists, anthropologists, and archaeologists. Her fascinating conclusion: behaviour seems largely dependent on perceived thr