 economic calculus), and the” anthropological” versions, more ambitiously aimed at depicting a certain type of man (supposed to be actually existing), or even human nature in general.The former, traditionally founded on a merely speculative psychology, have proved unrealistic and frankly wrong as descriptive models of economic behaviour (therefore not applicable for normative purposes either); however, they are liable to be corrected resorting to the new empirically based economic psychology, which turns quite other than the philosophers’ psychology that economists have used until yesterday.Among the latter (i.e.