Perception is a process by which individuals organize and interpret their sensory impression in order to give meaning to their environment. Perceptual set is an expectation of perception based on past experience with the same or similar stimuli. It refers to specific factors within the individual which have a bearing on their attention. It presents a broad view about the environment and people which helps to guide an individual's perception and behavior at work. The sources of perceptual sets are past experiences and contents; past experience are the factors within a perceiver whereas contents are factors outside the perceiver, which shape the perception and perpetual relation of a person.