Richard Wiseman is a conjurer and professional Skeptic based at the University of Hertfordshire in England, where he is Professor of the Public Understanding of Psychology. He replicated Rupert Sheldrake's results with Jaytee, a dog that knew when his owner was coming home, obtaining positive, statistically significant results, and then claimed that he had refuted this dogs abilities! Read a summary of this long-lasting controversy, with links to Rupert's and Richard Wiseman's papers and articles on this subject.