Aristotelis Koinis, PhD, is a Clinical Psychologist with extensive academic, clinical, and teaching experience in clinical, counseling, and forensic psychology. He holds degrees in Psychology, a Master’s degree (MA) in Clinical and Counseling Psychology, an MSc from the Medical School of Athens, a PhD in Health Sciences (Community Nursing), and postgraduate training in Criminological Psychology, while currently serving as a Postdoctoral Researcher at the Department of Nursing of the University of Thessaly. He has specialized training in Cognitive Behavioral Therapy and has long-standing professional experience as a Clinical Psychologist and Expert Consultant within the Ministry of Justice and the Ministry of Health, working with children, adolescents, adults, and vulnerable populations. He is actively involved in undergraduate and postgraduate education, teaching courses in health psychology, clinical psychology, developmental psychology, counseling, and forensic psychology at public universities and higher education institutions. His research interests focus on workplace bullying (mobbing) in healthcare professionals, mental health, quality of life, and psychosocial resilience.