In this revised and updated edition of a classic text, contributors present a wide range of research on anomalous experiences, from commonly documented sensations like synesthesia, lucid dreaming, out-of-body experiences and auditory and visual hallucinations, to rarer and more seemingly inexplicable experiences such as anomalous healing, past-lives, near-death experiences, mystical experiences, and even alien abductions. The book makes a compelling case for the inclusion of these marginalized and under-recognized experiences as not merely incidental, but essential to our understanding of human psychology.