Cultural lag is a concept in sociology that describes the fact that cultural elements change at different rates, which can sometimes disrupt a cultural system and lead to social strain or conflict. This term was popularised by William F. Ogburn, who argued that material culture (such as technology) often changes more rapidly than non-material culture (such as values, beliefs, norms, and laws). When a significant gap develops between these two aspects of culture, it can create a period of maladjustment or social problems as the non-material culture struggles to adapt to the changes in the material culture. For example, the rapid development of the internet and social media has outpaced the development of social norms and laws to govern online behaviour, leading to issues such as cyberbullying, privacy concerns, and the spread of misinformation. Cultural lag highlights the dynamic and sometimes uneven nature of cultural change and the challenges societies face in adapting their values and social structures to new technologies and other material innovations.