Claudio Colace, M.D., Ph.D., is a psychologist and psychotherapist at the Operational Unit of Psychology of the ASL Viterbo (National Health Service Office, Italy), where he works at the Outpatient Psychology Department and at the Center for Drug Addictions of Civita Castellana (Viterbo). He obtained an M.D. in Psychology at the University of Rome "La Sapienza", a post-graduate Master in Neurophysiology of Consciousness State, Psychopathology and Psychotherapy at the University of Rome "La Sapienza" and a Ph.D. in Psychology at the Department of Psychology of the University of Bologna, Italy. He is the author of scientific contributions published in The American Journal on Addictions, Neuropsychoanalysis, Alcohol and Drug Review, Sleep and Hypnosis, Sleep and Sleep Research. He is the author of Children's Dreams: From Freud's Observations to Modern Dream Research (London, 2010, Karnac Books); Drug Dreams: Clinical and Research Implications of Dreams about Drugs in Drug-addicted Patients (London, 2014, Karnac Books); and of some Encyclopedia of Personality and Individual Differences entries: "Dream", "Latent Dream Content" and "Manifest Dream Contents" (eds. V. Zeigler-Hill and T. Shackelford, Springer International Publisher, 2018).