Engle's law states that as income increases, a greater percentage is spent on non-food items and luxuries. Other key factors that influence consumption include price, season/climate, occasion, personal characteristics and choices, modern inventions, advertisements, demonstration effect, urbanization, population, place, education, pride, social interactions, physical environment, and social class. Filipino traits like pakikisama, colonial mentality, hospitality, regionalism, and utang na loob also determine consumption behavior in the Philippines.