Abnormal psychology is the domain of psychology that deals with the study of unusual patterns of behavior emotion and thought. This field in clinical context especially deals with behavior. It focuses on studying two behaviors i.e. adaptive and maladaptive. It also aims to identify causes for different conditions by utilizing diverse theories from the general field of psychology. Subnormal, supernormal and paranormal are the three categories that abnormal psychology includes while classifying mental disorders. The understanding of mental disorders under the domain of abnormal psychology revolves around two major paradigms - psychological and biological paradigm. The causes of abnormal psychology are attributed to genetic factors, biological factors, sociocultural factors, systemic factors, etc. This book unravels the recent studies in the field of abnormal psychology. It aims to shed light on some of the unexplored aspects and the recent researches in this field. This book will help new researchers by foregrounding their knowledge in this discipline.