How did the mind evolve? How does the human mind differ from the minds of our ancestors, and from the minds of our nearest relatives, the apes? What are the universal features of the human mind, and why are they designed the way they are? If our minds are built by selfish genes, why are we so cooperative? Can the differences between male and female psychology be explained in evolutionary terms? These questions are at the centre of a rapidly growing research programme called evolutionary psychology.
In the 1920s, some psychologists claimed that folk psychology was unscientific. J.B. Watson (1878-1958) and B.F. Skinner (1904-90) argued that beliefs, desires and other mental processes were not real things. They thought that the only way for psychology to become a true science was to give up talking about such “mythical entities”