Developments in Experimental and Cognitive Archaeology in the last two decades, together with those of Comparative Psychology and Cognitive Psychology, have allowed us to determine and understand in more detail how the mind of hominids worked from the beginning of human evolution. Experimental and Cognitive Archaeology have made it possible to know in detail the manufacturing processes of stone tools, the only type of material capable of surviving the passing of time, as well as the cognitive abilities necessary for their manufacture. Wider and deeper research into the behaviour of great primates both in the wild and in captivity have allowed a better and more detailed understanding of their cognitive abilities. While all approaches recog...