Sense of agency (SA), in neuropsychology refers to the subjective awareness of originating, executing, and controlling one's own volitional activities in the world. This also adds to the subjective phenomenon of self-consciousness by allowing oneself to feel separate from others. The sense of agency is crucial in cognitive development, particularly in the initial stage of self-awareness, which supports theory of mind capacities. SA is the manner in which self builds itself as an entity autonomous from the external world and from other agents. Differentiating oneself from others is one of the significant functions of human brain. Even slight impairments in this ability have profound effects on the functioning of the individual in the society. Furthermore, SA is also significant in law and ethical questions, which concerns guilt and responsibility. This book is compiled in such a manner, that it will provide in-depth knowledge about the neuropsychology of the sense of agency. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline. This book will serve as a reference to a broad spectrum of readers.