This document provides a critical analysis of consumer behavior, exploring theories, research methods, and recommendations. It discusses the factors influencing consumer behavior, such as personal, psychological, and social factors. The document also examines theories like Marshallian Economics, Psychoanalytic theory, Veblinian Social-Psychological model, Theory of Reasoned action, and more. The research methods used include qualitative data collection and analysis. The document concludes with recommendations for the government to influence consumer behavior in the context of the COVID-19 vaccine.