Standard economics uses a one-dimensional concept of motivation. It assumes that people are perfectly rational and are solely motivated in a selfish way. This essay argues that people differ in their preferences with respect to pro-social orientations, that preferences are plastic and...

In the course of history, a large number of politicians have been assassinated. Rational choice hypotheses are developed and tested using panel data covering more than 100 countries over a period of 20 years. Several strategies, in addition to security measures, are shown to significantly reduce...