Ever noticed a peculiar trend: the joy of a salary raise lasts a couple of months at most before the new amount becomes your baseline "normal"? By contrast, the rush of a lottery win or a successful stock trade triggers overwhelming emotions. It’s not about greed; it’s about the way your brain is wired. An unpredictable reward generates a far greater dopamine response than a predictable one. The human brain simply derives more pleasure from unexpected gains.
Monkeys, Juice, and the Core Secret of Dopamine
In the 1980s, neurophysiologist Wolfram Schultz conducted an experiment that revolutionized our understanding of dopamine. For years, it was characterized as the "pleasure hormone," but Schultz’s monkeys revealed a different reality.
Researchers were able to measure the activity of individual neurons within the primate brain. When a monkey received juice following a signal, dopamine was released only upon the signal—at the moment of anticipation. The juice itself no longer triggered a response because the brain had adapted. However, if juice was provided unexpectedly, without any warning, the neurons fired at an extraordinary rate.
The most fascinating result occurred when juice was delivered only half the time after the signal. It was this very uncertainty—"will I get it or not?"—that triggered the most intense dopamine surges. The brain was essentially living for the thrill of anticipation.
Why a Salary Is Inherently Boring
A salary is a 100% predictable reward. The brain adapts to it rapidly, and within six months, even a 20% raise loses its luster. This phenomenon is known as hedonic adaptation: the tendency for humans to quickly grow accustomed to any positive change.
Casinos, lotteries, and trading operate on a different frequency. They utilize a principle that psychologist B.F. Skinner called ‘variable reinforcement.’ Rewards arrive unpredictably, which is precisely what keeps the brain in a state of constant arousal. Evolutionarily, this served a purpose: it helped our ancestors forage for berries in the forest, where they never knew exactly where they would find the next bush. In the modern world, however, this ancient programming often works against us.
Trading: A Casino Masquerading as Analytics
Trading impacts the brain more severely than a standard casino for three primary reasons:
The Illusion of Control. In roulette, you understand that everything is left to chance. In trading, you feel as though you can calculate the market’s next move. You analyze charts, read the news, and draw trend lines. When you win, your brain screams, "I'm a genius!" When you lose, it whispers, "I’ll account for that specific factor next time." It becomes impossible to walk away.
The "Near-Miss" Effect. Imagine the price reaches your take-profit level but misses it by literally two pips before reversing. The brain doesn’t process this as a loss, but rather as a "near victory"—and it immediately demands that you open another trade.
Speed of Feedback. You press a button, and three seconds later, you see the result. This short dopamine loop repeats every few minutes. Modern trading applications are intentionally designed like slot machines, complete with flashing numbers, notification sounds, and a vibrant red-and-green color palette.
How to Avoid Becoming a Hostage to Your Own Brain
Professional traders are well aware of this biological trap and combat it with strict discipline: pre-defined rules, automated stop-losses, and a prohibition against checking the terminal after a trade is opened (though not universal, this strategy is common). Why is such a ban necessary?
When you watch the price of an open position fluctuate, your brain enters a state of dopamine-cortisol storm:
- Price moves into profit → euphoria and greed ("maybe I should hold longer?")
- Price moves into loss → fear, panic, an urge to "close quickly," or a desperate "hope it turns around"
You are physically incapable of making rational decisions in this state. Research by neuroscientists (such as the work of Colin Camerer, Pietro Mazzoni, and the studies of Camelia Kuhnen and Brian Knutson) demonstrates that financial risks activate the same brain regions as physical threats. You aren't thinking—you're reacting.
Professionals take the opposite approach: they make EVERY decision BEFORE opening a trade, with a clear head:
- Entry point
- Take-profit (where to secure gains)
- Stop-loss (where to admit a mistake and exit)
Remember the golden rule: if you find that you’re deriving pleasure not from the analysis, but from the rush of adrenaline when hitting the "buy" button—you are no longer an investor. You are a gambler. And in a game against the market, just like in a casino, the long-term mathematics will always favor the house.
Data analysis from 32 ESMA-regulated brokers (European Securities and Markets Authority) revealed that, on average, 72.2% of forex traders lose money. The industry-wide range shows that 70-80% of clients lose capital. But it’s not 100%... So, let’s stay optimistic, colleagues! :)
