Consumer behavior examines how individuals and groups select, buy, use, and dispose of products to satisfy their needs and wants. It investigates the thought processes, emotions, and external factors influencing buying decisions, drawing insights from psychology, sociology, anthropology, and economics. Key concepts include the consumer decision-making process, Maslow's Hierarchy of Needs, and factors like culture, social groups, and personal characteristics. Understanding these elements helps businesses develop effective marketing strategies and adapt to evolving consumer preferences and market trends.