: Often images are used as an instrument of thinking. These images maybe images of personal experiences of objects, persons or scenes actually seen, heard or felt. These mental pictures symbolize actual objects, experiences and activities. 3. Concepts: A concept is a general idea that stands fora general class and represents the common characteristic of all objects or events of this general class. The concept formation saves our efforts in thinking. E.g. Man is mortal you do not
88 perceive a particular man but mankind in general i.e. including women. Thus the generalized man is a concept.