Crowd psychology is the study of how individuals behave in groups. It examines how people's thoughts, feelings, and actions can change when they are part of a larger crowd. Factors such as anonymity, social influence, and emotional contagion can lead to behaviors that differ from those exhibited when individuals are alone. This field of psychology helps explain phenomena like mob behavior, riots, and mass gatherings. Understanding crowd psychology can aid in managing large events and improving safety measures, as well as providing insights into how collective behavior can impact social movements and public opinion.