Culture is learned behavior and consists of both material and non-material aspects. It includes symbols, language, values, beliefs, and norms. Culture is transmitted through socialization, the process by which people learn the norms and values of their society. The main agents of socialization include family, school, peers, media, religion, and the workplace. Cultural lag, variation, integration, and evolution describe how culture changes over time and interacts with technology and between groups in a society.