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Why we are still hooked on social networks

Today most social networks, or at least the most popular ones, are built in such a way that we cannot focus on our main objective when we use them: having conversations or connections with other people. We cannot listen to those we want to listen to, nor can those we are interested in listen to us.
The result? A fiction of interaction. An illusion of debate. In reality, what we say does not reach those it should, and what we want to hear fails to reach us.
In the attention economy, interaction design in social networks is based on exploiting behavioural patterns to maximise the time we spend on these platforms. This approach, widely studied in psychology and user experience (UX) design, includes controversial practices such as the so called dark patterns -now renamed as deceptive patterns or misleading patterns - that manipulate user decisions to favour the commercial objectives of the platforms, often at the expense of our well-being.
But despite being so widely studied and popular, why do they still capture so many people's attention? Let's take a look at the mechanisms and patterns of interaction key factors with which they operate.
Need for social connection and validation
Networks exploit our desire for belonging and social validation. From an evolutionary perspective, humans have developed a strong desire to belong to groups and gain social approval, as this has been key to survival.
Social networks are built on this foundation, providing an environment in which likes, followers, comments and shares act as micro-rewards that validate our identity and behaviour. Every time we receive a positive notification, our brain releases dopamine, a neurotransmitter that gives us a sense of satisfaction, reinforcing the desire to interact more and thus gamifying our relationships.
Networks make it easy to connect with like-minded communities and individuals, which can lead to a sense of belonging. However, this dynamic can become addictive, as constant validation creates emotional dependency.
On the other hand, they will enhance the principle of scarcity, the fear of missing out (Fear of Missing Out or FOMO), which is exacerbated by seeing posts from friends or public figures, encouraging continuous use in order to “not be left out” and to remain active so as not to miss opportunities (connections, information, trends), through constant notifications and updates that feed this fear. The result is a sense of urgency that makes us prioritise interaction with the network over other activities.
More interactions enhancing our cognitive biases
Social media algorithms are designed to show us content that is highly relevant or emotionally impactful, by leveraging cognitive biases that shape our decisions and perception of the world.
Algorithms learn very quickly, analysing our behaviour and the content that captures our attention, so they show us more of the same, creating content bubbles that reinforce our opinions or preferences. As a result, the diversity of viewpoints is reduced, creating content bubbles or echo chambers that intensify our confirmation bias.
We also tend to overvalue the most recent or accessible information, so that algorithms highlight recent content to keep us on our toes, even if it's not relevant, thus boosting the availability bias. This combined with the use of initial data, such as the number of followers on an account or the popularity of a topic, influences how we interpret the importance of something (anchor bias).
Variable rewards and infinite scroll
Inspired by slot machines (slot machines), social networks use unpredictable rewards to keep us hooked. For example, every time you scroll or post something, you don't know if you will get a lot of likes, comments or reactions. When the algorithm rewards us, our brain activates a dopamine rush. As a result this pattern reinforces compulsive behaviour, leading us to «check one more time» to see if there is anything new.
In the real world, there is a limit to how far things can go, The infinite scroll eliminates natural breakpoints, making it more difficult to stop. Infinite scroll eliminates natural breakpoints, making it harder to stop. This design also taps into our «operational curiosity», where we want to know what comes next.
Knowing all this, algorithms not only detect these patterns, but amplify them, creating a feedback loop that prioritises interactions over diversity or quality of content. This, enhanced by the use of AI agents that generate content like hotcakes, generates a parallel reality that completely distorts the interpretation of the real world.
Reaction to stress: notifications and polarising content
Social media design seeks to keep us in intense emotional states, as these are more likely to generate immediate interactions.
The constant notifications, For example, they interrupt our attention flow with alerts designed to generate stress and curiosity, leading us to open the app even when we didn't initially plan to. These interruptions are the first step towards immersing ourselves in an environment that prioritises emotional reaction over reflection.
Once inside, the polarising content takes centre stage. Posts that appeal to intense emotions such as anger, fear or indignation are especially optimised to generate interaction. This is no coincidence: strong emotions trigger automatic responses that prompt us to react quickly, whether sharing, commenting or debating. However, these reactions are often not rational or thoughtful, which makes them powerful tools to keep us engaged.
This emotional cycle generates what we might call an «emotional short-circuit», in which our impulsive responses are continually reinforced by the design of the platform. Instead of processing content critically, we fall into a reactive and exhausting consumption that prioritises emotional impact over logic. Thus, social media not only captures our attention, but shapes our interactions in ways that perpetuate this impulsive consumption, at a high cost to our mental wellbeing.
In view of Meta's recent announcement that it would be I would get rid of the fact checkers and recommend more political content., We have to take it for granted that this is not going to get any better.
A design that exploits our vulnerabilities
Social networks not only harness psychological principles to capture our attention, but amplify them through algorithms and design patterns. This makes them highly persuasive environments, capable of shaping behaviour and emotions on a large scale. However, these dynamics come at a cost: digital addiction, social polarisation and emotional exhaustion.
If you want to know more about the subject I recommend the following books:
- Thinking, Fast and Slow from Daniel Kahneman, explores cognitive biases and how they affect our decisions.
- Hooked: How to Build Habit-Forming Products by Nir Eyal, describes how companies design products to create habits through cycles of action and reward.
- The Design of Everyday Things from Don Norman, The book explores how designs can influence our actions, which is also applicable to digital design.
- The Age of Surveillance Capitalism by Shoshana Zuboff, discusses how technology companies design systems to maximise user attention.
- The documentary The Social Dilemma summarises the perspective of Tristan Harris, founder of the Center for Humane Technology. His talks and publications on ethical design in technology are highly influential.