This book is the first edition of a series of books on social research, which consists of three books that will be published successively. The Arab Yaqadha Library is responsible for supervising the issuance of this research series, in continuation of its leading role in this field, in order to spread societal awareness of societal issues and their solutions, which is part of the book's main objectives. This book revolves around emphasizing the importance of scientific knowledge, raising the knowledge level of society members, and activating their role in the development of their society, thus achieving the welfare of society and improving the social conditions of its members, and this is in fact the goal and main field of scientific research. The anatomy of the systemic system of theoretical perceptions is given utmost importance in this book, so the meanings are identified and the similarities and differences between them are known, while adhering as much as possible to accuracy, clarity, and logical sequence, and relying on the selection of literature specialized in the study of social and human research. There is no doubt that the relationship between the interest in scientific knowledge and the prosperity of the civilization of nations has been proven throughout history.