This book provides a comprehensive review of numerous areas of pseudoscience and related pathological science. It not only describes the factual bases for rejecting pseudoscientific claims, but also emphasizes the psychological processes that lead to the acceptance of such claims. This book is timely, given the increase in misinformation over the past decade.Using three principles of cognitive psychology, this book helps explain why people are hard-wired to accept and continue to believe in pseudoscientific claims. It provides up-to-date discussions of numerous paranormal and pseudoscientific topics, including the usual suspects—UFOs and alien abductions, astrology, cryptozoology, and more—but also belief in conspiracy theories, laboratory parapsychology, bogus forensic science techniques, the pseudopsychologies of Freud, medical fraud, and the unethical practices of Big Pharma. Older research that was foundational in the critical examination of several topics is woven throughout to situate them in a historical context.