Tomasz Witkowski, PhD, is a Polish psychologist, skeptic and science writer. He is known for his unconventional campaigns against pseudoscience. He specializes in debunking pseudoscience, particularly in the fields of psychology, psychotherapy, and diagnostics. As a founder of the Polish Skeptics Club, he also engages in debates on pseudoscience-related topics, emphasizing scientific skepticism. He has authored over a dozen books, tens scientific articles, and over 200 popular science articles. Three of his books have been published in English: Shaping Psychology: Perspective on Legacy Controversy and the Future of the Field (2020), Psychology Led Astray: Cargo Cult in Science and Therapy (2016) and Psychology Gone Wrong: The Dark Sides of Science and Therapy (co-written with Maciej Zatonski, 2015). He writes regularly for BPS Research Digest.