The main objective of this study is to construct an ideological and empirical examination of socio-economic behaviour and Social Changes of Pukhtun tribe. This work has been classified in five chapters: Social Behaviour and Societal Changes: an Ideological and Empirical Study; Settlement Patterns and Domestic Structures; Lineage and Leadership; Economic Behaviour and Lineage Ideology; and Socio-economic Mechanism: Patrons and Client Relationships. Undoubtedly, this book becomes indispensable source of inspiration for scholars and readers.