Issue 14 of the free online 'Haunted Magazine' contains an article by the SPR's Hon. Secretary, Professor John Poynton, on 'Psychical Research and the "Attitude of Incredulity"' (pp. 20-23)..
The cover article is on the Enfield poltergeist, and includes an interview with SPR Council member Guy Lyon Playfair.
The magazine can be found here: