This seems to have some credibility based on the researcher's credentials . . . a scientist that believes in ghosts . . .

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David Fontana

Professor David G. J. Fontana Ph.D. FBPS (1934 – 18 October 2010) was a British academic, psychologist and author. He was Professor of Psychology at the Cardiff University. He was also visiting professor at John Moores University and the University of the Algarve.[1]

Biography

Born in Middlesex, Fontana was a Fellow of the British Psychological Society, a Chartered Psychologist and a Chartered Counselling Psychologist. He published more than 45 books, including popular treatments of dreams and symbols. Fontana took an interest in paranormal research such as mediumship, poltergeist cases and Electronic voice phenomena[2] and was at one time president of the Society for Psychical Research, from 1995 to 1998.[3]
[link to en.m.wikipedia.org]


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Over the following two years, the poltergeist was exhaustively investigated by Professor David Fontana, a Fellow of the British Psychological Society. He became convinced that the so-called ‘Cardiff Poltergeist Case’ was a genuine haunting. [link to www.newsmonster.co.uk]