Hi - I don't get on here much at the moment but I did spot your debate with JR on alien abduction - here's an exerpt from a book I read recently "The Science of the Discworld" by Terry Pratchet, Ian Stewart, and Jack Cohen.
Ufologists allege that one american in twenty now claims to have undergone such an experience, (but they would, wouldn't they?). If true this figure would be a remarkable and not very happy comment either on the critical faculties of that great nation, or on the habits of an unknown spacefaring species.
As it happens, the figure is bogus. It originates from a 1994 Roper poll, which revealed that 1 american in 50 had undergone such an experience. But, and Joel Best pointed out in his book "Lies, Damned Lies and Statistics" in 2001, the number of people who actuially claimed to have been abducted by aliens was actually zero. The pollsters, worried that a direct question about aliens would put people off, used 5 'symptoms' of abduction instead. Anyone who scored suffciently highly on those symptons was deemed by the pollsters to have undrgone an abduction experience.
The questions were things like "Have you ever woken up paralysed with the sense of some strange presence in the room?". This sensation is typical of sleep paralysis, the most obvious and rational explanation of abduction experiences. So really the Roper poll was a survey about sleep paralysis. Only the researchers thought it had anything to do with alien abduction. The subjects had more sense.