The subconscious: How 95% of your decisions are made unconsciously

You think you make your decisions consciously and deliberately. You choose your outfit in the morning, opt for coffee instead of tea, instinctively hit the brakes in traffic—and are convinced that you actively controlled all of that. But science tells a different story: Our subconscious is responsible for an estimated 95 percent of all our decisions. What does that mean in concrete terms? And what does the research really say about it? This article takes you on a well-founded yet accessible journey into the depths of your own mind—without any esoteric shortcuts.

What exactly is the subconscious mind?

When we speak of the subconscious, we mean all mental processes that take place without us being aware of them. It is not a mysterious place deep within us, but a scientifically well-studied system of automatic perception, memory, and evaluation processes that our brain keeps running constantly in the background.

Psychologist Daniel Kahneman has described this interplay particularly succinctly: In his influential model, he distinguishes between System 1 and System 2. System 1 works quickly, automatically, and effortlessly—it is the realm of the subconscious. System 2, on the other hand, is slow, analytical, and taxing—our conscious, rational thinking. The key point: System 1 is far more active. It runs nonstop, while System 2 only really kicks in when explicitly called upon—and that happens less often than we think.

Our unconscious processes are by no means primitive or unreliable. They are the result of years of experience, learned patterns, and evolutionary adaptations. The subconscious is, if you will, a highly specialized assistant—except that we can’t fire it, and it usually has the final say.

The Automation of Everyday Life: Unconscious Decisions Everywhere

Imagine having to consciously think through every step while driving: pressing the gas pedal, holding the steering wheel, judging distance, signaling—all while carrying on a conversation. Impossible. It’s only possible because your brain has long since handed these tasks over to automatic processes.

This is exactly what social psychologists John Bargh and Tanya Chartrand described in their groundbreaking 1999 work. Their essay "The Unbearable Automaticity of Being" impressively demonstrated that the majority of our everyday behavior is controlled by automatic, unconscious processes—triggered by environmental cues, social cues, and learned response patterns. Bargh and Chartrand (1999) argue that automation is not a weakness of the mind, but its greatest strength: it frees up capacity in conscious thought for truly new, complex challenges.

In everyday life, this means: whether you reach for a specific product at the supermarket, how you react to a certain tone of voice, or which route you take home—your brain usually decides all of this before you’ve even begun to think about it.

Libet's Experiment: Decisions Are Made Before Conscious Awareness

One of the most provocative discoveries in neuroscience comes from the laboratory of physiologist Benjamin Libet. In his famous 1983 experiment, Libet asked participants to perform a simple hand movement at a time of their choosing and to note when they had made the conscious decision to do so—as indicated by a rapidly moving clock hand.

The astonishing result: The so-called readiness potential—a measurable electrical activity in the brain that precedes the movement—began, on average, about 550 milliseconds before the movement. The conscious decision, however, was not perceived until about 200 milliseconds before the movement. This means: The brain had made the decision before the person was aware of it.

Libet (1983) himself was cautious with his conclusions and emphasized that consciousness might still retain a kind of “veto power.” Nevertheless, this experiment sparked an intense debate about free will, responsibility, and the role of the subconscious that continues to this day. What we can take away from this: Our experience of freedom of choice may be a retrospective construct—a story that the conscious self tells itself.

Key message of the research The brain makes decisions before we are consciously aware of them. Bargh and Chartrand (1999) estimate that up to 95 percent of our mental processes run automatically and without conscious intervention - not because we are weak thinkers, but because our mind works highly efficiently.

Priming: How Invisible Cues Influence Your Behavior

One of the most fascinating phenomena in the field of implicit cognition is what is known as priming. This refers to the influence of previous stimuli on our thoughts, feelings, or behaviors—without us even noticing.

In a classic experiment, Bargh and his colleagues demonstrated that participants who had previously read words associated with the concept of “old” (such as slow, gray, retirement) subsequently walked more slowly than a control group. Their behavior had been directly influenced by the linguistic stimulus—completely unconsciously.

Priming is everywhere: in advertising, in the way a room is furnished, in the order in which information is presented. This is not manipulation in some shadowy backroom, but a fundamental principle of human perception. Our brain is constantly on the lookout for patterns and connections—and instantly activates relevant stored information when it recognizes a familiar stimulus.

In everyday life, this means: the environment we move through, the conversations we have, the content we consume—they all leave traces in our subconscious and unconsciously influence how we think and act.

Unconscious Thinking: Sometimes Smarter Than Conscious Thinking?

It sounds paradoxical, but it isn’t: Sometimes, too much conscious thinking leads to worse decisions than relying on unconscious processes. The Dutch psychologist Ap Dijksterhuis has elaborated on this in his Unconscious Thought Theory.

Dijksterhuis (2004) had test subjects choose between apartments described by many different characteristics. One group was allowed to decide immediately, another had to think intensively beforehand—and a third was distracted so that the subconscious could “work in the background.” The result was surprising: On average, the group that had been distracted made better, more satisfactory decisions than the analytically thinking group.

Dijksterhuis’s explanation: Conscious thinking has limited capacity and tends to overemphasize individual features. Unconscious thinking, on the other hand, can integrate more information simultaneously and form a more holistic judgment. This does not mean we should leave all decisions to gut instinct—but it does show that sleeping on an important decision is not a weakness, but a strategy.

Important: Dijksterhuis’s theory is not without controversy in the scientific community—later replication studies showed mixed results. Nevertheless, it remains a valuable thought-provoking concept regarding the limits of conscious cognition.

The Subconscious Mind and Our Emotions

Emotions are perhaps the most powerful force in the subconscious. They arise in the blink of an eye, often before we even know why we feel that way. Kahneman describes this in the context of System 1: Emotional reactions are fast, automatic, and difficult to control—they are, in the truest sense of the word, unconscious decisions made by the body.

Are you afraid of public speaking? Do you get nervous when you see a certain person? Do you automatically feel happy when you smell fresh bread? All of these are emotional conditioning patterns that your subconscious has stored—often from early experiences you may have long since forgotten.

Studies on so-called implicit cognition demonstrate this particularly clearly: Our unconscious attitudes—that is, what we truly think about people, groups, or situations—often differ significantly from the opinions we consciously express. Measurement methods such as the Implicit Association Test (IAT) reveal these hidden attitudes and show how deeply rooted some beliefs are in the subconscious.

Habits: The Operating System of the Subconscious

When we talk about automatic processes, we cannot ignore habits. They are perhaps the most tangible product of the subconscious—and at the same time the most direct lever we have to shape it.

From a neuroscientific perspective, habits arise through repetition: The more frequently a behavior is performed, the stronger the underlying neural connection becomes. Eventually, the behavior runs almost on its own—triggered by a stimulus, without conscious intervention. The brain has successfully outsourced the task to the subconscious.

Bargh and Chartrand (1999) describe habits as “goal-directed automatisms”: They originally arise from a conscious goal, but over time become so ingrained that the goal itself no longer needs to be consciously activated. That is the good news: Habits can be learned—and unlearned. Anyone who wants to understand their subconscious should first look at their habits. They reveal what the brain considers important and safe—regardless of what we consciously strive for.

Can you influence your subconscious mind?

One of the most common questions is: If so much happens unconsciously—am I then helplessly at the mercy of my own patterns? Science’s answer is a clear no—but with one important caveat: Direct control is hardly possible, but indirect influence certainly is.

1. Awareness as the first step

Kahneman emphasizes that System 2—that is, our conscious thinking—is slow, but it can intervene. Anyone who recognizes that they are reacting automatically has already created some distance. Mindfulness-based approaches use precisely this mechanism: pausing and observing before reacting.

2. Designing Environments Strategically

Since priming is so effective, it’s worth consciously designing your own environment. If you want to eat healthier, place fruit in plain sight on the countertop. If you want to read more, put a book by your pillow. The subconscious reacts to stimuli—so let’s make sure the right stimuli are present.

3. Establish new habits

If habits are the operating system of the subconscious, then changing them is the most profound form of self-development. Small, consistent repetitions form new neural pathways—and thus, in the long term, new automatic patterns.

4. Reflect on emotional experiences

Many unconscious reactions have their roots in past experiences. Therapeutic approaches such as cognitive behavioral therapy or depth psychology-oriented methods help uncover and change these patterns—not through willpower alone, but through understanding.

What the 95 Percent Figure Really Means

The claim that 95 percent of our decisions are made unconsciously is often cited—and just as often misunderstood. It does not originate from a single experiment, but is an estimate derived from various lines of research—including that of Bargh and Chartrand (1999), who argue that the vast majority of mental processes occur automatically.

What this figure does not mean: that your conscious thinking is irrelevant. What it does mean: that our image of ourselves as rational, fully self-determined beings needs to be corrected. We are neither robots of our instincts nor completely free thinkers—we are both at the same time, and that is neither frightening nor demotivating.

On the contrary: this knowledge empowers us. For those who understand how the subconscious works can deal with it more effectively—not through control, but through the wise shaping of their own circumstances.

Conclusion: The Subconscious Mind as a Silent Partner

Your subconscious is neither an enemy nor a mystery. It is a highly efficient system that learns from experience, recognizes patterns, and organizes your life in the background—so you can focus on what matters most. The findings of Libet (1983), Bargh and Chartrand (1999), Dijksterhuis (2004), and Kahneman collectively show that unconscious decisions are the norm, not a failure.

The exciting part isn’t about overpowering or outsmarting the subconscious. The exciting part is getting to know it better. Your habits, your emotional reactions, your biases, and your strengths—they all have their home in the subconscious. And the better you understand this silent partner, the more consciously you can shape what is truly within your control: your environment, your routines, and your willingness to pause.

The subconscious speaks all the time. The only question is whether you’ll start listening.

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Has it really been proven that 95 percent of our decisions are made unconsciously?

The 95% figure is a scientific estimate, not a precisely measured number. It is based on a summary of various lines of research - including the work of Bargh and Chartrand (1999) on the automation of mental processes and Kahneman's System 1 and System 2 model. It describes the proportion of automated, unconscious processes in overall mental activity - not that we have no control over our behavior.

Can I actively change my subconscious?

Direct control over the subconscious is not possible - but targeted indirect influence is. Establishing new habits, consciously shaping your own environment, reflecting on emotional patterns (e.g. in therapy or coaching) and mindfulness exercises are scientifically recognized ways to establish new automatic patterns in the long term.

What is the difference between the subconscious and the unconscious?

In everyday language, the terms are often used interchangeably. In psychology, a distinction is made between the preconscious (content that is not exactly conscious but can be made easily accessible) and the unconscious (deeply rooted content that is difficult to access). Modern cognitive science prefers to speak of automatic processes and implicit cognition in order to avoid mystical connotations.

What is priming and how does it affect me in everyday life?

Priming describes the unconscious influencing of thoughts and behavior by previous stimuli. For example, if you see an advertisement for a certain product, you are more likely to buy this product - even if you have already forgotten the advertisement. In everyday life, you encounter priming in the design of stores, in the language of your surroundings and in the content you consume.

Does Libet's experiment mean that we have no free will?

This is one of the most discussed questions in neuroscience. Libet's finding (1983) that the readiness potential precedes the conscious decision calls classical notions of free will into question - but does not prove its complete absence. Libet himself suspected a subsequent veto right of consciousness. The debate is open and is also being conducted intensively in philosophy.

How are habits and the subconscious connected?

Habits are automated patterns of behavior that the subconscious stores and recalls - triggered by certain stimuli or situations. They are formed through repetition and can be changed through consistent new repetitions. Researchers such as Bargh and Chartrand (1999) describe habits as the core of automatic processes - and therefore the most direct starting point for sustainable behavioral change.

Your prompt for today: Choose a single habit that’s part of your daily routine—one you didn’t consciously choose, but that just happens. Observe it today without judgment: When does it occur? What triggers it? What need lies behind it? This conscious observation is the first step toward meeting your subconscious on equal footing—not as an adversary, but as a curious observer of your own life.