Anthropology tended to assume that perspectival drawings could not be recognized by natives (e.g. Hudson). In the past decades Kennedy (1974) and particularly Haaland (1976) have provided evidence which challenged this assumption. Indeed the latest research suggests that although the conditions for the production of perspectival representations are complex and limited to certain cultures, the conditions for the recognition of perspectival representations are much more universal than had been assumed and extend not only to primitive cultures but even to the blind.