Cognitive psychology is the scientific study of the different mental processes. It also focuses on processes like memory, perception, reasoning, solving of problems, using of language, creativity, attention, thinking and so on. This is also widely linked up with other disciplines of the psychological study as well including social psychology, abnormal psychology, educational psychology, personality psychology and development psychology. One of the interesting fact regarding this study is it can operate despite of the absence some relevant stimulation like in images and hallucinations. It is apparently involved with all kinds of tasks that a human can possibly do. So it can be said that every psychological phenomenon is some kind of cognitive phenomenon.