I'm honestly not sure how the above test indicates any belief in a god, but, perhaps, I'll look into this research more and get back with you.
Continuing with Athiel's statements there has been significant research attempting to find what has been called the "god spot," the part of the brain responsible for religious beliefs. At various times, a study has claimed to find it, but in reality the entire brain is involved with certain aspects.
Moral reasoning seems to be primarily in the frontal lobe, which coincidentally is the part of the brain that is the most advanced in humans and allows us to deal with abstract concepts. Religious people think about god in certain parts of the frontal lobe, and at first this was taken to be the "god spot." In reality, both believers and non-believers alike end up thinking about questions about morality in the same regions as the religious think about god.
"Religious experience," as Athiel stated, has been found to be prominent in the temporal lobe. This area of the brain can be thought of as controlling mid-level brain functions such as speech, and processing both visual and auditory semantics.
Those who practice meditation have been shown to have enormous brain activity in the parietal lobe, the area most responsible for sensory information.
I've also read recently some very interesting research that seems to show that the more dogmatic or rule-based your belief system is, the more the amygdala was aroused. The amygdala is associated with negative emotions such as fear and anxiety. These studies determined what values participants deemed sacred, then would have the person make a statement to the contrary, e.g. a deeply religious person stating "I do not believe in God" would cause the amygdala to fire up.
Long story short, religion/morality are as complicated as the human brain itself.
And as an aside to MoodyVoodoo's point about the Waorani, I was just reading the other day about a similar tribe known as the Pirahã. The article goes into some interesting issues in linguistics, but also deals with the Pirahã's lack of a concept of a deity stating:
...the Pirahã weren't lost, and therefore they had no interest in being saved. They are a happy people. Living in the present has been an excellent strategy, and their lack of faith in the divine has not hindered them.
If interested, here's the article: http://chronicle.com/article/Researchers-Findings-in-the/131260/