Dynamics of Investment Psychology via the Extended JX Model: The Structure of Crowd Behavior and Anxiety
Financial markets are not merely a series of numbers. They project the movements of the human heart. Especially in highly volatile areas like crypto assets and emerging markets, emotional fluctuations and shifts in crowd psychology are etched directly into the charts. In this paper, we use the extended JX model to decipher this psychological structure and reveal the mechanisms lurking behind investment behavior.
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1. Presentation of the Extended JX Model
The extended mathematical formula is expressed as follows:
J’(x) = αE(x) + βS(x) + γA(x) + δR(x)
Where:
• E(x): Emotion (Emotional load)
• S(x): Structure (Structural pressure)
• A(x): Anticipation (Anticipatory inhibition)
• R(x): Recognition by proxy (Proxy approval load)
α, β, γ, and δ indicate the degree to which each factor influences psychology and behavior. The magnitude of these coefficients determines the direction of people's decision-making and crowd behavior.
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2. Emotional Load αE(x)
In a rising market, greed dominates. People are driven by the expectation that "it will go up more." Conversely, in a falling market, fear becomes dominant, and people are controlled by a sense of impatience, thinking, "It's over" or "I have to escape."
This amplitude of emotion is αE(x). In markets with high volatility like crypto assets, this value becomes extremely large. As a result, the entire market is at the mercy of emotional waves, and collective emotional explosions move prices more than rational judgment.
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3. Structural Pressure βS(x)
Markets always have a "structure." This includes moving averages, necklines, support and resistance levels, and even external factors such as regulations and systems.
At first glance, these are merely external environments, but psychologically, they act as strong pressures. For example, the fact that a "support line has been broken" gives many investors the fear of "accelerating decline." Structure moves psychology, that psychology triggers buying and selling, and as a result, prices move. βS(x) can be called the mediating term between market structure and psychology.
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4. Anticipatory Inhibition γA(x)
Humans are beings that predict the future. However, those predictions are not necessarily rational.
"If I sell here, I might be left behind," "It should come back if I wait a little longer"—these thoughts act as γA(x). As prospect theory shows, people tend to take risks in loss situations. Therefore, they dislike realizing losses and postpone decisions. Anticipatory inhibition hinders rational decision-making and instead works to amplify risks.
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5. Proxy Approval Load δR(x)
An important feature of the extended model is δR(x). It is difficult for humans to act in isolation. In the world of investment, "approval from others" also acts strongly.
The psychology of feeling reassured by winning reports on social media, conformist behavior in communities, and the movements of large investors. These are all based on proxy approval and distort individual decision-making. When δR(x) is large, people act according to the impulse to "be recognized by others" rather than rationality. In modern markets, this element cannot be ignored.
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6. Diagram of Crowd Psychology
The four factors of the extended JX model explain the typical progression of market psychology.
1. Amplification of greed (αE) — Enthusiasm in a rising market.
2. Disregard for structure (ignoring βS) — Ignoring warning signs and convincing oneself that "this time is different."
3. Chain of fear (surge in βS) — Fear spreads upon breaking the neckline.
4. Trap of hope (γA) — Clinging to a temporary rebound and losing composure.
5. Despair and panic selling (transformation of αE, collapse of δR) — Crowd psychology moves toward capitulation.
This flow etches the pattern of "enthusiasm → disregard → fear → hope → despair" into the chart. The reason markets repeatedly draw the same shapes is that human psychology universally follows the same path.
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7. Practical Implications
Investors who understand the extended JX model can read charts not as "price movements" but as "visualization of psychology." The important points are as follows:
• Is your own αE(x) (emotion) ignoring βS(x) (market structure signals)?
• Are you being entangled by γA(x) (anticipatory inhibition) and amplifying your losses?
• Is δR(x) (desire for proxy approval) distorting your judgment?
Excellent investors recognize that "I am also a being caught up in crowd psychology" while simultaneously observing that crowd psychology from a step back. Being an observer is not about coldness, but rather about a high level of self-awareness.
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Conclusion — The JX Model as an Equation of the Heart
J’(x) = αE(x) + βS(x) + γA(x) + δR(x)
This formula concisely captures the essence of investment psychology. The waves that appear on a chart are the result of the dynamic interaction of four factors: emotional load, structural pressure, anticipatory inhibition, and proxy approval load. Reading the market is not about predicting prices, but is equivalent to understanding one's own heart as a mathematical formula. Swayed by greed and fear, ignoring structure, misreading the future, and seeking the approval of others. The extended JX model encompasses all of this.
The chart is not merely a transition of numbers, but a mirror of human psychology. Learning the market is, at the same time, learning about oneself. This realization is the first step toward transitioning from the crowd to an observer.