Cognitive psychology refers to the study of internal mental processes or the activities that occur inside our brain such as memory, attention, problem solving and language. These are also referred to as higher mental processes. The main focus of cognitive psychology is on determining how people process the inputs received from the outer world to think, perceive, remember, forget, solve problems, focus, and learn. This is done by means of psychological experiments which are conducted on human subjects. These experiments may include using magnetic and positron scanning devices to observe what is happening in different parts of the brain while it is busy in imagery and interpretation. The cognitive models so formed find their applications in educational psychology, personality psychology, social psychology, developmental psychology, abnormal psychology and economics. This book is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of cognitive psychology. The topics included in this book on cognitive psychology are of utmost significance and bound to provide incredible insights to readers. This book is an essential guide for both academicians and those who wish to pursue this discipline further.