ABSTRACT
A Particular actions and beliefs We sometimes wish to explain the economic and social behaviour of either individual agents, or of groups of agents, by estimating its divergence from action rational in whole or in part. But to do this we have to be able to recognize, and characterize, various kinds of irrational activity-various kinds of failed or flawed action. We also have to be able to distinguish such failures from nonrational behaviour, behaviour that is, which is neither rational nor irrational.
