This reference guide intends to help the students of social and behavioral science to cope with the key concepts which are often used for evaluating students' content knowledge. It presents information to those who want to get a snapshot of the key terms in research. The book is intended as a reference guide to indicate the meaning and use of different terminologies, concepts, approaches, methods, sampling procedures, designs, statistics, and data collection in research. This book provides a simple way of defining the key concepts in research. The information is presented in a glossary format which does not does not require depth and specificity in definition. This features make the book as a resource pocket guide that the intended readers can easily use to brush up their research knowledge. This volume is designed to appeal to undergraduate and graduate students, teachers, lecturers, practitioners, researchers, across the field of social and behavioral science.