Emotion regulation is broadly defined as the process by which individuals modify internal (i.e., thoughts, feelings, physiology) and external (i.e., situations) aspects of their emotional experience. In this entry, differing conceptualizations of emotion regulation are first introduced. Next, the temporal nature of emotion regulation is exemplified through a process model. Following a brief overview of emotion regulatory strategies, the importance of context is discussed. The entry concludes by considering individual differences and implications for various forms of psychopathology.