# Prepared fears > > Martin Seligman and his colleagues proposed that it was indeed quite easy to "condition" people to develop certain types of fears - a fear of snakes, for example - but extremely difficult to condition people to develop other, less natural fears such as fear of electrical outlets or cars. --p31, Evolutionary psychology > and his colleagues proposed that it was indeed quite easy to "condition" people to develop certain types of fears - a fear of snakes, for example - but extremely difficult to condition people to develop other, less natural fears such as fear of electrical outlets or cars. --p31, [Evolutionary psychology](https://wiki.g15e.com/pages/Evolutionary%20psychology%20(book.txt))