"Locke’s importance to psychology needs to be re-examined in the light of changing developments. He is not merely to be seen as the father of cognitive psychology – although, as a later chapter will suggest, he was a father who to a certain extent concealed his own ancestry. Locke was also the step-father to a rebellious son, who reacted against those very parts of his work that today seem modern. As such, Locke is a step-grandfather of critical psychology, occupying an interesting place in the story of critical psychology’s hidden roots."