Psionics refers to the study and practice of using mental abilities to influence the physical world or communicate with others. This concept often includes abilities such as telepathy, telekinesis, and precognition. Psionics is commonly found in science fiction and fantasy literature, where characters may possess extraordinary mental powers. In various games and media, psionics is depicted as a skill set that can be developed and harnessed, often associated with specific characters or classes. Examples include Dungeons & Dragons, where psionic abilities are part of character options, and Star Wars, which features characters with strong mental powers like Jedi.