Introduction : When we look at the world with our eyes, do we see it as it really is? The preceptions of different people are not always alike; they vary with attention, interest, and individual personality factors. Most of us don't see reality. Actually we interpret what we see and call it reality. The psychologists state that there is no objective reality; there is only perceived reality. The perceived world is not real; but it has a high feeling of reality. The feeling is so strong that we sodom question what we see and perceive.
Behind the retina of the eye, many erroneous mental processes cause inconsistencies that creep into our preceptions, People's emotions, thoughts, feelings and actions are trigged by the perception of their surroundings. The manner in which a person perceives the environment has an effect on his behaviour. Perception lies at the very base of every individual behaviour and there can be no behaviour without perception. Perception is essentially a psychological process.
The human brain is bombarded with hundreds of stimuli every moment. But we don't see the world at random; there is some amount of orderliness, since the brain selects of the stimuli and then interprets these to give a meaning.