Scientists Establish A Link Between Brain Damage And Religious Fundamentalism

By Andrea D. Steffen | 22 February 2019
Exposing The Truth

Scientists found that damage in a certain part of the brain is linked to an increase in religious fundamentalism. (Photo by Ben White on Unsplash)

It is important to understand the phenomenon of religious fundamentalism from a psychological and neurological perspective because religious beliefs play a massive role in driving and influencing human behavior and politics throughout the world. Through the years, there has been a variety of research studies conducted to investigate the cognitive and neural systems involved in religious fundamentalism. One of them in particular, led by Jordan Grafman of Northwestern University, links brain damage and religious fundamentalism.

“We need to understand how distinct religious beliefs are from moral, legal, political, and economic beliefs in their representations in the brain, the nature of conversion from one belief system to another, the difference between belief and agency, and the nature of the depth of knowledge that individuals use to access and report their beliefs.” – Grafman

Raw Story defines religious beliefs to be “thought of as socially transmitted mental representations that consist of supernatural events and entities assumed to be real.” While empirical beliefs are “based on how the world appears to be and are updated as new evidence accumulates or when new theories with better predictive power emerge.”

The difference between the two lies in the fact that religious beliefs are not usually updated in response to new evidence or scientific explanations like empirical beliefs are. Because of this, religious beliefs are strongly associated with conservatism, meaning that they are fixed and rigid. That is why conservatism is therefore used to help promote predictability and coherence to the rules of society among individuals within the group.

Religious fundamentalism is defined as “an ideology that emphasizes traditional religious texts and rituals and discourages progressive thinking about religion and social issues.” Anything that questions or challenges religious fundamentalists beliefs or way of life is generally opposed.

That is why there is a greater chance that they will often be aggressive towards anyone who does not share their specific set of supernatural beliefs. They will most likely also reject science. These oppositions are seen as existential threats to their entire worldview.

Grafman’s research utilized data gathered from Vietnam War veterans as part of the Vietnam Head Injury Study. They compared levels of religious fundamentalism between 119 vets who had lesions and 30 veterans who didn’t. Every person took the same set of tests (questionnaires).

We all possess a mental trait called ‘cognitive flexibility’ – the brain’s ability to easily switch from thinking about one concept to another, and to think about multiple things simultaneously. Through evolutionary necessity, we acquired this useful skill. It allows us to update beliefs in light of new evidence. Psychologically speaking, cognitive flexibility is a term that describes a personality trait which involves dimensions like curiosity, creativity, and open-mindedness.

Cognitive flexibility allows individuals to make more accurate predictions about the world under new and changing conditions and is therefore a crucial mental characteristic for adapting to new environments. This ability is a role of the prefrontal cortex. They discovered that through brain imaging research.

“The variation in the nature of religious beliefs are governed by specific brain areas in the anterior parts of the human brain and those brain areas are among the most recently evolved areas of the human brain.” – Grafman

If there is damage to the prefrontal cortex in an individual then their cognitive flexibility may be impaired. It means that open-mindedness presents a challenge; and since religious fundamentalism involves a strict adherence to a rigid set of beliefs, it would seem like the comfortable option for such an individual.

This is why Dr. Grafman and his team predicted that participants with lesions to this region of the brain would score low on measures of cognitive flexibility and trait openness and high on measures of religious fundamentalism – which they did. These results suggest that damage to the vmPFC (prefrontal cortex region specific to cognitive flexibility) indirectly promotes religious fundamentalism by suppressing both cognitive flexibility and openness.

In conclusion, these findings suggest that impaired functioning in the prefrontal cortex—whether from brain trauma, a psychological disorder, a drug or alcohol addiction, or simply a particular genetic profile—can make an individual susceptible to religious fundamentalism. What this means is that in some people, the system of “belief revision” may become suppressed due to brain damage.

This study is just intended to be a contribution to a growing body of knowledge about how religious experiences are formed in the brain. For further information, you can read the study called “Biological and cognitive underpinnings of religious fundamentalism” which was published in the journal Neuropsychologia.

Reprinted with permission.

Scientists Confirm Link Between Brain Damage And Religious Fundamentalism

The Brain Creates Religion

Chris Hedges: “AMERICAN FASCISTS” The Christian Right vs USA

Be sure to ‘like’ us on Facebook


  1. In 1777, one year after the signing of the Constitution, Eberhart Zimmerman proved beyond the shadow of a doubt that the so-called Noachian Flood never happened. The Pope of the time even declared it a myth in an official Bulletin. And yet, close to 200 years later, Protestants continue to believe in it and many ignorant people of all stripes do too. It is mind-boggling.
    After the 430 days at sea, the imaginary ark would have been stranded on top of an extinct volcano (Ararat) in Turkey. Stranded on an Island of sorts for many months where all vegetation had disappeared, covered in mud and salt. The herbivores had nothing to eat, but the predators had a field month and ate into extinction all the herbivores; all it took was to eat either the male or the female. So if this myth had really happened, it would have been a MASS EXTINTION anyway. Wrap you head around that for a moment. (and google it)

    • There has been mass extinction. So why couldn’t what we see be evidence of a worldwide flood? Regardless, that wasn’t what the article was talking about.

      I wonder if they have studied the brains of people who have militantly followed the ideology of atheistic states?

      • There is no geological evidence of a worldwide flood. As to the “atheistic states” (I assume you mean Stalin, Pol Pot, etc.) The ideology of such states closely resembles a sort-of fundamentalism of its own. No state ever suffered due to an excess of “rationality.”

  2. Geology – The scientific study of the origin, history, and structure of the earth. It includes the study of organisms that have inhabited the planet.

    Earth's entire history is laid down in the layers of earth's crust. These scientists can tell you what the seasons were like over millions of years; when there were droughts; floods; what life forms existed, where and when. Because of science we have evidence of an Asteroid impact, creating the Chicxulub Crater, and the devastating conditions, resulting in mass extinction of the dinosaurs and 75% of all life, 65 million years ago. That event is evident in a layer of the earth's crust, called the Cretacious-Tertiery extinction event, or the K-T event. The evidence is in this layer everywhere around the globe.

    Scientists have searched for evidence of a worldwide flood and there just is none. If it happened, they would've found it. It is just a myth.

    As for your question about "people who have militantly followed the ideology of atheistic stated?" I have no idea where you got that but – atheists are not militant. They don't believe in a "God", and they don't care if you do believe in one, as long as you don't make laws to impose your beliefs on them, which the Religious Right is trying to do.


Please enter your comment!
Please enter your name here