[Blood of Tyrants]

Truthful answer, I don't remember. But I seem to recall that the study dealt specifically with Christianity and prayers.

[Dimensio]

I've seen 'prayer' studies before, and all of them are heavily flawed, with problems in the control groups and very limited conditions.

Personally, I won't trust any study that does not have multiple control groups for multiple theologies.

[Doctor Stochastic]

You don't have a double-blind study of prayers to various dieties to show that prayer works?