This document discusses the key factors that influence consumer behavior. There are four main types of influencing factors: cultural, social, personal, and psychological. Cultural factors include culture/society, sub-cultures, social classes, and cultural trends. Social factors are reference groups, family, and social roles/status. Personal factors comprise age/life stage, income, lifestyle, and personality. Psychological factors involve motivation, perception, learning, and beliefs/attitudes. Consumer behavior is defined as how individuals select, purchase, use, and dispose of goods/services.