Do judges' decisions depend on how long it is since they ate their lunch? Is the best place for a woman to seduce a man on a rickety bridge? Does free will really exist? This book explores how our genes and experiences determine our behaviour as well as discussing the implications determinism may have on personal responsibility and morality.

David Lieberman taught at the University of Illinois, USA, where he was voted the most stimulating teacher in Psychology, and then at the University of Stirling, UK. He is the author of seven textbooks, and served on the Science and Engineering Research Council and as Associate Editor of the Quarterly Journal of Experimental Psychology.