4 KudoZ points awarded for this answer. Comment: "Many thanks Ziad. إدراكي and معرفي seem to be standard for "cognitive", but إدراك or معرفة are frankly not very precise for "cognition", as they do not suggest the mental process or activity involved. استعراف is rather better for "cognition", but admittedly not yet in general use. The age-old problem of accepted usage versus conceptual accuracy... Cheers, Steve"