IQ

Of 10 highest IQ's on earth, at least 8 are Theists, at least 6 are Christians

http://www.examiner.com/article/of-10-highest-iq-s-on-earth-at-least-8-are-theists-at-least-6-are-christians

Mental Health

Belief in God Can Improve Mental Health Outcomes

http://psychcentral.com/news/2013/04/26/belief-in-god-improves-mental-health-outcomes/54121.html

Arguments

Cosmological Argument 

The cosmological argument is less a particular argument than an argument type. It uses a general pattern of argumentation (logos) that makes an inference from certain alleged facts about the world (cosmos) to the existence of a unique being, generally identified with or referred to as God. Among these initial facts are that certain beings or events in the world are causally dependent or contingent, that the universe (as the totality of contingent things) is contingent in that it could have been other than it is, that the Big Conjunctive Contingent Fact possibly has an explanation, or that the universe came into being. From these facts philosophers infer deductively, inductively, or abductively by inference to the best explanation that a first or sustaining cause, a necessary being, an unmoved mover, or a personal being (God) exists that caused and/or sustains the universe. The cosmological argument is part of classical natural theology, whose goal has been to provide evidence for the claim that God exists.

http://plato.stanford.edu/entries/cosmological-argument/

Argument from reason 

One absolutely central inconsistency ruins [the popular scientific philosophy]. The whole picture professes to depend on inferences from observed facts. Unless inference is valid, the whole picture disappears... unless Reason is an absolute[,] all is in ruins. Yet those who ask me to believe this world picture also ask me to believe that Reason is simply the unforeseen and unintended by-product of mindless matter at one stage of its endless and aimless becoming. Here is flat contradiction. They ask me at the same moment to accept a conclusion and to discredit the only testimony on which that conclusion can be based."
—C.S. Lewis, Is Theology Poetry

http://en.wikipedia.org/wiki/Argument_from_reason

TWO DOZEN (OR SO) THEISTIC ARGUMENTS - Lecture Notes by Alvin Plantinga

http://www.calvin.edu/academic/philosophy/virtual_library/articles/plantinga_alvin/two_dozen_or_so_theistic_arguments.pdf

Naturality

It's natural to believe in God: Oxford study 

Human beings have natural tendencies to believe in God and life after death, according to a three-year international research project directed by two academics at the University of Oxford. 

http://ibnlive.in.com/news/its-natural-to-believe-in-god-oxford-study/152066-19.html

"Separate bodies of research suggest that young children have a broad tendency to reason about natural phenomena in terms of purpose and an orientation toward intention-based accounts of the origins of natural entities."

http://www.scipie.net/docs/2007/Kelemen_PS_2004.pdf