Journal of Mental Health and Psychiatry

Dr. Kalliopi Megari is a Clinical Neuropsychologist, Counselling Psychologist, and Health Care Specialist with extensive experience in neuropsychology, cognitive rehabilitation, and clinical research. She serves as the General Secretary of the Hellenic Neuropsychological Society and has held multiple academic and teaching positions across Europe and the United States.
Her work focuses on neuropsychological outcomes in cardiac surgery patients, cognitive rehabilitation, pediatric neuropsychology, and the psychological needs of chronic illness patients. She has collaborated with major universities including the Aristotle University of Thessaloniki, the University of York, the Norwegian University of Science and Technology, and the University of Warsaw.
Dr. Megari has also served in leadership roles within international neuropsychology committees, contributed to mentoring programs, and delivered invited lectures globally.

• Clinical Neuropsychology (cardiac surgery, cognitive dysfunction)
• Forensic psychology
• Health psychology (cancer, cardiac diseases)
• Pediatric neuropsychology & neurodevelopmental disorders
• Neuropsychological outcomes in chronic diseases

• Postdoctoral research on cognitive reserve and cardiac surgery outcomes

• Extensive clinical practice in neuropsychological assessment & rehabilitation

• Teaching in multiple international universities (Greece, Poland, USA, Bulgaria, UK)

• Member / leader in multiple international neuropsychology committees

• Global Engagement Representative & committee member – International Neuropsychological Society

• Over 79 conference presentations in international and national conferences

• Editorial board member for 54 scientific journals

• Reviewer for 22 peer-reviewed journals

• Participation in European and international collaborative research projects

• Recipient of multiple awards for research excellence and conference presentations

• Argiriadou H., Megari K., Antonitsis P., Kosmidis M.H., Papakonstantinou C., Anastasiadis K. (2010). Non-pulsatile circulation… Perfusion, 25(4), 225–228.

• Metallidou P., Megari K., Konstantinopoulou E. (2010). Epistemological beliefs… Psychology, 17(4), 380–401.

• Anastasiadis K., Argiriadou H., Kosmidis M.H., Megari K., et al. (2011). Neurocognitive outcome… Heart, 97, 1082–1088.

• Metallidou P., Konstantinopoulou E., Megari K. (2011). Developmental changes in children’s evaluations… Yearbook of School of Psychology AUTh, 89–112.

• Sravrakaki S., Megari K., Kosmidis M., et al. (2012). Verbal fluency and working memory in interpreters. J Clin Exp Neuropsychology.

• Metallidou P., Diamantidou E., Konstantinopoulou E., Megari K. (2012). Changes in children’s beliefs… Australian Journal of Educational & Developmental Psychology, 12, 83–92.

• Megari K. (2013). Quality of life in chronic disease patients. Health Psychology Research, 1(3), 141–148.

• Thomaidou E., Argiriadou H., Vretzakis G., Megari K. et al. Erythromycin reduces cognitive decline… Clinical Neuropharmacology, 40(5), 195–200.

• Megari K., Kiosseoglou G., Argiriadou H., et al. (Under edition). Postoperative cognitive dysfunction…

• Megari K. (2019). Contribution of neuropsychology in cardiac surgery. Cir Card Mex., 4(2), 51–53.

• Megari K. (2021). Neuropsychological functioning post-chemotherapy. Neuropsychiatrie, 35, 92–97.

• Megari K. (2020). Language impairment in cancer patients. Breast Cancer Research & Treatment, 184(3), 779–782.

• Megari K. (2020). Instrumental ADL & cognition in cancer patients. Eur J Neurology, 28(1), 66–70.

• Flora K., Georgiadou T., Megari K., et al. (2021). Resilience, fear of COVID-19... Journal of Ideas in Health.

• Megari K. (2021). Case studies of postoperative cognitive dysfunction. Int J Cancer Science & Therapy.

• Tsiakiri A., Ioannidis P., Vlotinou P., et al. incl. Megari K. (2024). Computerized cognitive intervention… Aging Medicine & Healthcare.

• Theodoratou M., Kougioumtzis G., Yotsidi V., et al. incl. Megari K. (2023). Neuropsychological consequences of massive trauma. Medicina.

• Megari K., Kosmidis M.H. (2024). Protecting the brain while healing hearts. Am J Geriatric Psychiatry.

• Megari K., Sofologi M., Kougioumtzis G., et al. (2024). Neurocognitive & psycho-emotional profile of children with disabilities. Appl Neuropsychol Child.

• Megari K., Thomaidou E., Kougioumtzis G., et al. (2024). Cognitive dysfunction in elderly surgical patients. Neuroscience Insights.

• Thomaidou E., Karlafti E., Didagelos M., Megari K., et al. (2024). Acalculous cholecystitis in COVID-19. Viruses.

• Megari K., Frantzezou C., Polyzopoulou Z., Tzouni S. (2024). Neurocognitive features in ASD. Int J Developmental Neuroscience.

• Megari K., Thomaidou E., Chatzidimitriou E. (2024). Neuropsychological consequences of COVID-19. INQUIRY.

• Despoti A., Tsiakiri A., Megari K., et al. (2024). Effectiveness of remote neuropsychological interventions. Applied Neuropsychology Adult.

• Megari K., Miliadi V. (2024). Neuropsychology of early childhood. Int J Developmental Neuroscience.

• Papadopoulou S., Anagnostopoulou A., Megari K., et al. (2024). Communication & swallowing in Cri Du Chat syndrome. Children.

• Papadopoulou S., Anagnostopoulou A., Megari K., et al. (2025). Dysphagia in rare diseases—Systematic Review. Healthcare.

• Megari K., Thomaidou E., Palioura M., et al. (2025). Neurocognitive deficits & GI symptoms in children (COVID-19). Int J Dev Neurosci.

• Megari K., Thomaidou E., Theodoratou M., et al. (2025). GI symptoms & neurocognition in COVID-19 adults. J Clinical Neuroscience.

• Katsarou D., Mantsos E., Papadopoulou S., Megari K., et al. (2025). AI in grammar testing for children. Education Sciences.

• Tsiakiri A., Plakias S., Vlotinou P., Megari K., et al. (2025). Innovative health promotion via computerized training. EJIHPE.