Categorical attitude and concrete attitude
Evidence from brain-injured patients suggests that we experience the world in a concrete attitude of immediate experience as well as in a categorical attitude, where objects are viewed as falling into certain categories.
This is evident with victims of amnesiac aphasia, who continue to perceive in the concrete attitude but can no longer perceive in the categorical attitude—they can't for example recognise a red flower and red vases as both being members of the category red.
Adhemar Gelb (1933) and Kurt Goldstein (1933, 1943).