LEAP Summer School: Free CRO course worth €3,000!
Sign up for free
Does free will really exist — or are our decisions made long before we consciously perceive them? This question concerns not only philosophy and neuroscience, but also marketing. Because whether a user buys a product or performs an action on a website often depends less on rational considerations than we would like. This is exactly where conversion optimization comes in: If you understand how decisions are made in the brain, you can design content and designs in such a way that they specifically address the users' subconscious processes. In this article, you will learn why the debate about free will is so exciting for marketers, how decisions are made neurologically and what that means for designing websites.
1. Why the famous Libet experiment questions the idea of free will
2. How the brain prepares decisions and what role unconscious processes play
3. What is meant by subconscious conversion and which triggers it triggers
4. How findings from neuroscience can be used in practice for conversion optimization
5. What conclusions should marketers draw from this for designing websites and campaigns
1. Why the famous Libet experiment questions the idea of free will
2. How the brain prepares decisions and what role unconscious processes play
3. What is meant by subconscious conversion and which triggers it triggers
4. How findings from neuroscience can be used in practice for conversion optimization
5. What conclusions should marketers draw from this for designing websites and campaigns
The question of free will has been a core problem in philosophy for centuries. Neuropsychologist Benjamin Libet made a decisive contribution to the discussion with his famous experiment in the 1980s. He investigated the chronological sequence of three events:
The test subjects should perform a simple hand movement and indicate when they felt the inner urge to do so. The result: The EEG showed that the readiness potential — i.e. the unconscious preparation of the action — was already active well before the conscious decision was made. In other words, the brain prepared the action before the test subjects even felt they had made a decision. This came as a shock to the discussion about free will. If our brain prepares actions before we consciously perceive them, how free are our decisions really? This is exactly where it gets exciting for marketing: Clearly, many actions are not the result of rational consideration, but through unconscious processes — and these can be influenced.
In order to classify Libet's results, it's worth taking a look at how the brain works. Millions of nerve cells work together to process impressions, evaluate stimuli and initiate actions. The interplay of different brain areas plays a central role in this:
.jpeg)
This means that decisions are rarely purely rational. Instead, they are based on a combination of experiences, emotions, and unconscious processes that prepare our actions long before we are aware of them.
An example makes this clear: Imagine that there is a piece of Black Forest cake on the table. Just looking at it activates areas of the brain that evoke memories of pleasure and positive feelings. Even before you rationally consider whether you're hungry right now, you're probably reaching for the plate. At this moment, cause and effect appear to be directly linked.
Marketing has long been dominated by the image of Homo Oeconomicus — a person who makes decisions exclusively rationally in order to maximize his benefits. However, neuroscience shows that this model is inadequate. For conversion optimization, this means that users react more strongly to unconscious triggers such as colors, images or phrases than to lengthy explanations or purely logical arguments.
.png)
The rational person does not exist
If decisions are often made unconsciously, this has direct consequences for conversion optimization. Users don't always have to be consciously convinced — it's enough to set the right stimuli that work subconsciously. This principle is also used as subconscious conversion referred to.
A central tool is the so-called Nudging. Decisions are subtly steered in a desired direction without the user feeling this as manipulation. Examples include:
Does the color blue inspire confidence in you too?
A/B testing also plays a key role. They help to find out which unconscious triggers are particularly effective. This can involve choosing the colors, the position of a call-to-action button or designing a heroshot. In the end, the aim is always to reduce the cognitive load of users and intuitively guide them to the desired action.
The combination of neuroscience and marketing opens up exciting new approaches. If you understand how the brain processes information, you can design websites in such a way that they work “correctly” on an unconscious level.
Some specific applications:
This makes it clear that conversion optimization is more than placing a button or shortening a form. It is the art of addressing, deep within the user's subconscious, the processes that determine actions.
The question of free will may remain philosophically unanswered — but it provides valuable insights for marketing. Studies such as the Libet experiment show that decisions are often made in the brain before we consciously perceive them. For conversion optimization, this means that users do not only act rationally, but are heavily controlled by unconscious processes.
If you understand these mechanisms, you can design websites and campaigns in such a way that they are intuitively convincing. Colors, defaults, storytelling and clear structures are not mere design questions, but direct levers for behavior. The future of conversion optimization therefore lies in combining scientific findings about the human brain with data-driven methods such as A/B testing and AI analyses. The result is a practice that relies less on gut feeling — and instead consistently takes into account the users' unconscious decision-making processes.
.png)
.png){kind=small}