Welcome to Dark Side of the Brain




Cover Revolution


According to some, Donald Trump is destined to become the next President of the United States. Unimaginable? Trump is not a politician, yet he is out-gunning all his competitors. My short book, The Trump Revolution: Restoring the American Dream, tells the story of his incredible appeal and why he might and should be elected.


Trump is a constant irritation for a socialist government and a placating Congress. But with millions gathering behind Trump’s ideas and aggressive style, he is gaining political strength daily. Moreover, he is changing the face of politics for the better. His legacy will remain with these achievements. The question I pose is can he withstand the hot wind of opposition and indeed ‘make America Great Again?’


I’m making this 50 page book as inexpensive as possible in order to reach those who want to find the magic behind Trump’s recent successes and what it takes to remake a totally chaotic government. I don’t use credit cards, or request cash, but you can get the lively and provocative book by sending me a check (or M/O) for $12 (including postage) in care of my publishing company, Agave Publishers and I’ll quickly get the book to you. The offer is good only for mailing in the United States.


Del Thiessen, Ph.D. & Editor

Agave Publishers LLC

494 Hwy 71 W., Suite 140-305

Bastrop, Texas 78602




Psychopathy and the Explosion of Old Age

In the U.S. and 97 % of other Western and Asian nations, populations are rapidly decreasing in young males and females and people are becoming old. The good news is that psychopaths will decrease in frequency. The bad news is that the world will lose most of its wealth, influence, and military capabilities. Why is this happening? Is sex and reproduction becoming Less interesting? How can we help?

For more on this report, click here.


Dark Side of the Brain is a place that recognizes and explores the deviant nature of the brain, which are both the key to our innovative behaviors and the harbinger of our darkest motivations. Without these two psychological biases our accomplishments would be few and our evolutionary history short.

We are great as a species because of our deviant minds, but we also understand that our remarkable oddities are a curse leading to selfish narcissism and destructive behaviors.

Too often we strive for “ideal greatness” and forget that we also have a sinister and duplistic nature, a psychopathic disposition built through eons of natural selection for survival and reproduction.  Dark Side of the Brain is dedicated to a deeper understanding of our zebra-painted behaviors.

Over the years,  Dr. Del Wolf Thiessen has written widely about our layered and diverse personalities, using his research and teaching background as an evolutionary psychologist to unravel the critical themes of our existence. Much of his work is presented for sale in this website (see Bookstore) and in a free weekly posting (Blog) for those who question their own psychology and the deviant patterns of behavior that we see among many who fill our lives.

The author of this material hopes that his readers will gain insights into their own complex structure and share comments with other explorers of the variable mind.


The Inhumane side of Humanity


Creative literature is often the leading edge of understanding the remarkable and often dark measures of the mind. So it is with Oscar Wilde’s incredible novel of 1891, The Picture of Dorian Gray. I believe that this extraordinary narrative is one of the best portraits of the duality of the human mind ever conceived – extreme beauty acting on one dimension and deep evil on another. Oscar Wilde’s story is really a sensitive self-analysis, more insightful, perhaps, than much of the later explorations of the mind by Sigmund Freud and Carl Jung.

I invite you to read the following summary and think about the profound revelations that Wilde gives us. Keep this story in mind as I introduce deviant mental strategies on this website and in my weekly blog. The Picture of Dorian Gray  is a superb context for understanding the passions of the human mind.


 Oscar Wilde, one of my favorite observers of human pathologies, inspired the focus of this website when he opined: “The more one analyses people, the more all reasons for analysis disappears. Sooner or later one comes to that dreadful universal thing called human nature.

The Decay of Lying, 1891

Oscar Wilde

What we see over and over is a thin line – more of a blur – between man’s nobility of purpose and extreme evil that lurks in hidden crevices of the brain. The short explanation for our multiple mind is to understand that our ancient ancestors survived not only because they cooperated with potential mates and found reasons to band together to challenge difficult environments, but also because they loved the bloody taste of victory and the importance of competition, aggression and human destruction.

Charles Darwin

Nothing less than full commitment by both males and females allowed our ancestors to survive and pass their critical genes on to future generations, and finally on to us. We all carry genes for nobility, altruism, and sacrifice, and we all carry the dreaded traits of narcissism, lust, duplicity, and murder.

Only some individuals reach the extreme levels of the psychopathic brain. Overall, while psychopaths disturb our tranquility and cause us problems, some are highly intelligent and contribute in important ways to society and cultural growth. Without the adaptive mix of “good” and “evil” that haunts our universe social progress might be totally derailed.

Our problem is to identify psychopaths that might cause us short-term and long-term distress, including psychopathic spouses, friends, relatives, lovers, bosses, teachers, people on the street, and those with political power. They usually don’t display a revealing label and are often difficult to uncover.



Below are a few strategies we offer our readers to help those interested in the good life, and who need to be able to spot and counteract the influence of psychopaths that, by hook or crook, would take your money, destroy your time, demand restricted behaviors, and possibly even take your life.


  1. Psychopathy does not imply insanity, and pathological brain organization is not all that apparent.
  2. Psychopaths are charming, short-term maters, frequently sexual, and sometime live a complex life of destiny.
  3. We will discover that psychopathy is underestimated in frequency, and over represented in the arts, in top corporate CEO’s, among adventurers, sensation-seekers, scientists, politicians, and dominating personalities.
  4. Readers with keen intellect and deep curiosity will enjoy Dr. Thiessen’s blog located on the next tab.
  5. News Reports update the workings of the strange mind and introduce new outrages and personal encounters submitted by readers (anonymously, of course). If readers have something to say, this is the place to share.
  6. The most extensive investigation of the Dark Side of the Brain,  Psychopaths Rising: Unholy Links to Civilization and Destruction (by Del Wolf Thiessen, (2013)) will be available soon.
  7. Books and manuscripts written by Dr. Thiessen illustrate the struggles and accomplishments of deviant minds. They are available from the author’s “Bookstore.”
  8. A new series of reports is being developed by Dr. Thiessen, illustrating how to deal with the psychopath in common interactions, in love relations, in business, and at work. They will soon be available from the author’s “Bookstore.” These reports will help protect individuals from deception and harm.

Wolf (Del) Thiessen, Professor Emeritus

University of Texas at Austin

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