Piotr Grajewski is a clinical and health psychologist whose research sits at the intersection of digital psychology, behavioral addictions, and psychotraumatology. He earned his master’s degree from the University of Warsaw and is currently completing his Ph.D. at the same institution. His academic work explores how adverse childhood experiences, dissociative tendencies, and other risk factors contribute to symptoms of Gaming Disorder, as well as how desire thinking shapes addictive behaviors. Piotr Grajewski is an active participant in the ESTSS-led ADJUST study, investigating adjustment disorder and PTSD factors emerging during the COVID-19 pandemic.