The inquiry into the mental processes that influence behavior falls under the scope of cognitive psychology. It encompasses language acquisition, perception, attention, metacognition, and memory. It entails conducting psychological experiments involving human subjects to understand how the human mind absorbs, processes, and functions in response to external stimuli. Insights gained from such studies are applied across various domains including social psychology, developmental psychology, educational psychology, personality psychology, abnormal psychology, and economics. This field of psychology is closely intertwined with applied psychology. This book is a compilation of chapters that discuss the most vital concepts in the field of cognitive psychology. The topics covered herein deal with the core aspects of this area. It will also serve as a reference guide for students and academicians.