Theory of mind refers to the ability to understand and attribute mental states (such as beliefs, intentions, and emotions) to oneself and others. It allows individuals to perceive and interpret others' behaviors, predict their actions, and empathize with their feelings. Theory of mind is crucial for effective social interactions, communication, and building and maintaining relationships. Research in this area explores how theory of mind develops in childhood, how it may be impaired in conditions such as autism spectrum disorders, and how it can be improved through interventions and training.