This study aims to identify the impact of coupons on the buying behavior of customers at supermarkets, with a focus on JTA Supermarkets. The research question is 'What is the impact of coupons over the buying behavior of customers at supermarket?' The study explores the process of social research, criteria and limitations of research design, criteria for reliability and validity of research data, and the relationship between philosophy and methodology within research texts. The research design chosen for this study is experimental. The study also discusses the qualitative-quantitative debate in social science research.