This edited book on Research Methodology is tailored for postgraduate studies in Social and Behavioral Sciences, designed to benefit research scholars across universities, colleges, and research institutes in related disciplines. Emphasizing the value of formative assessment, we view it as a pivotal tool to aid and empower students in their learning journeys. In fields like sociology, political science, library science, home science, education, and management, research methods and procedures exhibit notable similarities, particularly in areas involving researcher-led interviews with people. Agricultural extension research methods represent a significant non-formal educational system globally, focused on transferring knowledge and research outcomes to farmers, alongside potential services for farm families, rural youth, and the development of rural community resources. The perspective on agricultural development has evolved significantly, coinciding with reduced governmental involvement in many societies and the increased roles of private enterprise and non-governmental organizations. Economic liberalization has opened new doors for farmers but has also heightened competition, making it challenging to predict future trends and provide definitive guidance to farmers. Addressing agricultural and rural development challenges in developing countries necessitates a sufficient number of well-trained and skilled professionals. Effective problem-solving for farmers relies on extension workers and agricultural graduates possessing broad knowledge of extension teaching methods and technologies. This book consolidates comprehensive information on research methods in extension education to support practitioners in the field.