Perceptual psychology is a subfield of cognitive psychology that is concerned specifically with the pre-conscious innate aspects of the human cognitive system: perception.Perceptual psychology is a branch of cognitive psychology dealing with mental processes that we use in everyday living.Any time you problem-solve, make a decision or make a memory you are using an example of perceptual psychology.erceptual psychology is a branch of cognitive psychology dealing with mental processes that we use in everyday living. Any time you problem-solve, make a decision or make a memory you are using an example of perceptual psychology.