The scientific study of mental processes is known as cognitive psychology. Some of the various processes studied under this discipline are language use, attention, problem solving, memory and perception. Cognitive psychology generally sees cognition through the dual process theory. This theory states that cognition is made up of two styles of processing, intuition and reasoning. Cognitive psychology finds application in several fields such as abnormal psychology, social psychology, developmental psychology, personality psychology and economics. Components of behaviourism were integrated with cognitive psychology to form cognitive behavioural therapy. It is an intervention which seeks to improve mental health and treat issues such as depression and anxiety. The topics included in this book on cognitive psychology are of utmost significance and bound to provide incredible insights to readers. It will serve as a valuable source of reference for graduate and post graduate students.