The document discusses buyer behavior, defined as the psychological, social, and physical behaviors of potential customers as they become aware of, evaluate, purchase, consume, and provide feedback about products and services. It notes that buyers have varying needs from basic security to self-actualization, and that their decisions are influenced by many factors, such as information, socio-cultural environment, groups, social classes, religion, culture, and status. The buying process involves need recognition, information search, evaluating alternatives, purchase decisions, and post-purchase experience and behavior.