This is not the only reality. Millions of people also exist online in virtual worlds, where they can fly, teleport, socialise and spend time inside a digital body of their own design. Psychologists are studying these worlds, to find out how people behave there, and to uncover whether a person’s online escapades affect their real-world selves. Others are moving into digital realms to teach and work with clients. The researchers and clinicians in this field all make the same argument – this is no passing fad, but rather the most exciting opportunity facing the profession for a generation.