Some traditions in Western esotericism and parapsychology interested Schopenhauer and influenced his philosophical theories. Huxley took interest in investigating the claims of parapsychology and spiritualism. Kirlian photography has been a subject of scientific research, parapsychology research and pseudoscientific claims. Critical analysts, including some parapsychologists, are not satisfied with experimental parapsychology studies. He has published articles on transliminality in journals on parapsychology and psychology. Eysenck believed that empirical evidence supported parapsychology and astrology. He tells that he was a professor of psychology and parapsychology. The Fox sisters have been widely cited in parapsychology and spiritualist literature. Other examples, given by Feynman, are from educational research, psychology (particularly parapsychology), and physics. He holds Ph.D.s in both parapsychology and psychology. Kirlian photography has been the subject of scientific research, parapsychology research and art. It contained articles on science, parapsychology, and short works of science fiction and fantasy. Morris and his research associates and PhD students pursued research on topics related to parapsychology. Psychologist Thelma Moss devoted time to the study of Kirlian photography at UCLA's parapsychology laboratory. There have been instances of fraud in the history of parapsychology research.