Are there scientific proofs for extrasensory perception, psychokinesis, or precognition? Systematic experiments on these questions have been conducted for over 100 years. This volume provides a detailed and critical overview of the current state of knowledge in experimental parapsychology. It summarizes the findings on the topics of telepathy, clairvoyance, precognition, remote viewing, direct mental interaction, and psychokinesis through meta-analyses and explains them. This overview is complemented by a presentation of theoretical approaches. The author also addresses the specific methodological requirements for experimental parapsychology and discusses the unique position of this often controversial discipline.