Scientific investigation remains central to the production of reliable and cumulative knowledge in the social sciences. This article examines the meaning, methods, objectives, and skills of scientific investigation, with particular emphasis on their relevance to social science research. Drawing on classical and contemporary methodological literature, the paper conceptualizes scientific inquiry as a systematic process grounded in observation, logical reasoning, and empirical verification. It reviews the scientific method and its contemporary relevance, outlines major types of scientific methods employed in social research, and discusses the objectives and core activities that structure scientific inquiry. The article further explores the interdependent relationship between research and theory, highlighting how empirical research and theoretical frameworks jointly contribute to explanation, prediction, and knowledge advancement. Attention is given to the elements and types of social science theory, as well as the dynamic interaction between facts, theory, and empirical explanation. The paper also examines the role of hypotheses as testable propositions derived from theory and explains how hypothesis testing sustains the self-correcting nature of scientific knowledge. Finally, the purpose of theory in guiding research design, interpretation, evaluation, and evidence-based understanding is discussed. By synthesizing methodological principles and theoretical insights, this article demonstrates that scientific investigation is not a rigid procedure but a dynamic and evolving framework for understanding complex social realities. It concludes that strengthening scientific investigation skills is essential for advancing sociological knowledge, enhancing methodological rigour, and addressing contemporary social challenges through evidence-based inquiry.
Abdulkarim et al. (2026) studied this question.