That seems to make no sense whatsoever.Really. If people actually believe in power of the prayer, it should work some sort of placebo effect on them. If they don't, there should be no effect whatsoever. So what could be the reason for the opposite happening?
That's why it pays to do studies! I wouldn't have predicted a negative effect either, and I used to think 'offering to pray' was a good thing if it gave reassurance.
I believe that that is referencing the 'great prayer experiment', but I could be wrong. I believe the findings of the study were along the lines of: the patients that were unaware of being prayed for or weren't being prayed for recovered from their conditions as normal, while the patients who were aware that a group of strangers were praying for their recovery (I think this includes a group of patients who were under the false impression that the group was praying for them, but I may be making that up) had a greater tendency towards complications. Why would this be? Who knows, but it could be false confidence in their own recovery by divine forces (a kind of inverse placebo), worry that 'oh man, if they're praying for me I must be ill', or something completely different. What it certainly doesn't show is that knowing you're being prayed for aids recovery.
Yeah, that's what I was talking about. There's even a thread on CFC Off-Topic about it.