The Unforeseen Origins of Truth Serum
The truth serum, a miraculous substance that supposedly compels one to speak only the absolute truth upon its administration, appears in almost every spy movie. But is such a concoction merely a product of screenwriters’ imagination? Not quite. History, even the relatively recent one, recounts numerous instances of using psychoactive substances to enhance truthfulness. What exactly is the truth serum? How does it work? Below, I will address these questions.
Humans aren’t the only animals capable of lying. However, it’s worth noting that in the natural world, falsehood serves only two purposes: survival and species perpetuation. Humans, on the other hand, are more complex and can lie for various reasons, often driven by the desire to gain certain advantages. Sometimes, falsehood masks more or less nefarious deeds, making it difficult to distinguish truth from lies. In certain situations, this issue can be of paramount importance. Thus, it’s not surprising that scientists have long attempted to discover a reliable truth elixir.
Does the truth serum exist?
Have they succeeded in doing so? In a sense, yes. Such substances do exist. Moreover, ancient civilizations already employed one of them. After all, the Latin phrase “in vino veritas” — in wine, there is truth — didn’t come out of nowhere. However, it’s essential to emphasize that scientists probably never discovered or developed a substance that would work 100% effectively. Over the years, various psychoactive substances have been experimented with, but available information suggests that the effect of complete truthfulness was never achieved.
What is the truth serum?
When referring to the truth serum, one must consider a group of pharmacological agents with psychoactive effects, administered to increase truthfulness. This term primarily applies to barbiturates (but not exclusively), derivatives of barbituric acid known for their sedative effects. These substances enhance the activity of GABA, a neurotransmitter responsible for reducing the excitability of nerve cells in the brain.
How does the truth serum work?
The truth serum isn’t a specific substance, so the mechanism of action of such agents can’t be unequivocally determined. Different pharmaceuticals exhibit different properties. Most commonly, they induce a state bordering on consciousness and sleep, in which the person under the serum’s influence will provide truthful information.
The serum aims to disrupt the communication process between the brain and the peripheral nervous system, thereby slowing down the transmission of information to the brain. This prevents the execution of highly complex actions requiring concentration. Researchers have concluded that it’s impossible to invent a lie when unable to concentrate. False information is much more complex and intricate than the truth.
Which substances are recognized as truth elixirs? There were certainly many. Below are two that were most commonly used.
Scopolamine
Scopolamine is a tropane alkaloid, a highly toxic substance present in many plants. It was known since ancient times, but ancient civilizations used it not as a truth serum but as a poison. It’s worth mentioning that administered in the appropriate dose, it proves lethal.
Due to its properties, scopolamine reduces smooth muscle tension, decreases saliva secretion, slows gastrointestinal motility, reduces bronchial secretions, accelerates heart rate, and counteracts vomiting. However, it also has some adverse effects. It can induce excessive drowsiness and impair memory. Nevertheless, the beneficial outcome of administering small doses led to its application in medicine, including obstetrics.
The discovery of scopolamine’s truth serum properties was accidental. In 1922, Texan physician Robert House observed this property, which was later confirmed by experiments.
However, can scopolamine be considered a reliable truth serum? Most likely not. This substance acts on the central nervous system, inducing calmness, drowsiness, and dullness. It can also induce hallucinations, so administering even slightly excessive doses will result in nothing but gibberish coming out of the interrogated person’s mouth. Moreover, it’s essential to remember that different people have different tolerances to the effects of psychoactive substances.
Studies have confirmed that when administered in properly measured amounts, the substance significantly increases truthfulness and prompts sincere confessions. However, subsequent tests revealed serious side effects resulting from using “truthful” doses of scopolamine.
Sodium Thiopental
Sodium thiopental is a derivative of barbituric acid. This substance was used in anesthesiology until recently. However, it was observed that when administered in small quantities, the substance doesn’t lead to loss of consciousness. In such cases, it exhibits relaxing and calming effects. It induces a state balancing on the border between wakefulness and sleep, which is most desirable when seeking genuine information.
Cases of using truth serum:
- After the properties of scopolamine were discovered in the USA, it was used to prove the innocence of interrogated suspects. Over time, it began to be used to prove the guilt of potential criminals.
- During World War II, various psychoactive substances were administered to soldiers returning from the front lines who had experienced trauma or suffered from aphasia. Doctors believed that this would enable them to obtain crucial information about their experiences, which could then be used to implement effective therapy.
- The frequency of truth serum usage increased during the Cold War. As part of the MKUltra program, the CIA experimented with various psychoactive substances, from scopolamine to LSD. The research aimed to achieve one thing — to develop an effective method of manipulating the human mind. In 1993, a report prepared 32 years earlier was published, indicating that the American intelligence failed to develop a substance that would compel a person to speak only the truth. It is certain that the KGB also worked on the truth elixir.
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