Officials at the University of California found in 2001 that various regions of the human brain were extremely inheritable, especially in the frontal lobe, which deals with cognition. Ninety-five to 100 percent correlation among identical twins was evidenced after MRI scans to 10 pairs of identical twins. According to Paul Thomson, who headed the research, the frontal lobe is as highly identical among twins as fingerprints. Thomson ensured that the environment the twins grew up in was also identical, to avoid any interfering factors. Around 60 to 70 percent correlation in the same area of the brain was found in fraternal twins.
According to researchers at the University of North Carolina in 2007, people with an IQ of below 70 or above 110 were much more likely to be virgins than people with an average IQ score -- most people's IQ falls between 90 and 110. Roughly 63 percent of adolescent men and more than 81 percent of adolescent women with below average IQ scores had not had sex. Adolescents with an IQ above 110 were one-and-a-half to five times less likely to have sex than people of average intelligence.
In 1972 a Gallup survey revealed 33 percent of college graduates are believers of creationism. Fifty-five percent of people who only graduated from high school believe in creation and 66 percent of people who only graduated from grade school believe in creationism. Gallup based its study on the assumption that college graduates have a higher IQ than high school and grade school graduates.
Scientific American published in 1999 a study that claimed 72 percent of scientists with a high IQ didn't believe in God. The research claimed Christians were intellectually inferior to atheists. Twenty-one percent of the scientists were agnostic, and 7 percent said they believe there is a God or an afterlife. Forty percent of B.S.-degree scientists believed in God, and 10 percent of highly regarded scientists believed. The same study stated that 90 percent of Americans believe in God. Skeptic magazine published an article in the same year that claimed 40 percent of mathematicians, 30 percent of biologists and 20 percent of physicists believe in God.