Parapsychology is a field of study concerned with the investigation of paranormal and psychic phenomena. Parapsychologists study telepathy, precognition, clairvoyance, psychokinesis, near-death experiences, reincarnation, apparitional experiences, and other paranormal claims.Parapsychology research is largely conducted by private institutions in several different countries and funded through private donations, and the subject rarely appears in mainstream science journals. Most papers about parapsychology are published in a small number of niche journals. Most scientists regard parapsychology as pseudoscience. Parapsychology has been criticised for continuing investigation despite being unable to provide convincing evidence for the existence of any psychic phenomena after more than a century of research.