How to Build Mental Models: Schema Building

In the initial stages of learning, getting a broad overview of a topic is crucial. But there is a distinct difference between getting the "feeling" of a structure and actually comprehending it.

The learning process essentially boils down to this: you are moving from an incomplete picture to a more complete picture through the gradual process of increasing the frequency and methods of your active thinking.

When most people try to learn a new subject, they skip foundational steps with the high expectation that they will immediately absorb a massive amount of information. Not only does this make it harder to get started—since high expectations breed fear—but it's also highly ineffective for long-term retention due to a lack of structure and active thinking.

If you struggle with this, it’s not your fault, and it has nothing to do with your intelligence. It’s mostly because we aren't explicitly taught how to study or process information, especially for exams.

Those who are naturally good at absorbing knowledge tend to have deep internal processing capabilities. They integrate new materials with what they already know at a much faster rate. If you find integration difficult, it just means you have a different learning style—one that you can optimize by building better systems.

Let's start with schema building.

As you can probably guess, schema building is the process of constructing a mental model or structure that helps you understand—and ultimately retain—information for the long term.

You continuously refine this schema until it becomes foolproof, allowing you to adapt it to almost any situation or exam question you might face. Schema building is involved in all stages of learning, but it is especially critical during the consumption and analysis stages.

If you execute schema building properly, you would be surprised at how much you can retain from a 300-page book in just one week.

During the consumption stage, your goal is to be in an exploratory mindset. You need to drop the high expectation of memorizing every single detail. Counterintuitively, letting go of the need to memorize actually opens you up to absorbing more new information because you aren't slowing yourself down by getting bogged down in the minutiae.

In this exploratory mode, you essentially just care about the "feeling" of the topic's structure. You want to be in a state of flow—exploring without analyzing. In this context, "flow" simply means maintaining forward momentum, not getting paralyzed by the things you don't understand yet. Think of this stage as a trial-and-error process where you are testing whether one piece of information connects to another, even if it doesn't entirely make sense initially. You want to keep moving through new information that feels relevant as quickly as possible.

If you try to analyze everything too early without a working structure, you end up breaking information down into isolated pieces without understanding how they connect in a meaningful way.

To do this exploration effectively without getting stuck analyzing irrelevant information, you need to use focus questions and structural techniques.

To facilitate this process, rely on four key techniques: grouping, focus questions, relevance skimming, and mind/concept mapping.

Let's say you have a textbook with 10 chapters. You eventually want to build a schema that accounts for all of them, but tackling 10 chapters at once is rarely possible. Instead, you need to group them based on relevance.

Break the material down into categories, with each category containing about 3-4 topics. For instance, if you're reading a general biology textbook, you could group the chapters into categories like Energy, Nervous System, Circulation and Musculoskeletal.

Note: When I talk about a "schema," I am referring to both the physical mind map you create and, most importantly, the deeper internal understanding of those chapters.

To maintain your state of flow, you need about three interconnected focus questions for each category.

For example, if you're studying the nervous system, your focus questions might be:

With your focus questions in hand, use relevance skimming to hunt for keywords. Initially, aim to extract about 15-20 keywords per category. These keywords will form the structural foundation of your mind map.

Here is what that might look like in practice:

Next step in the schema: You would take these keywords and draw relationships (e.g., drawing a cause-and-effect arrow from Glucose/Mitochondria to Action Potential, or a part-to-whole line from Brain to Central Nervous System).

Mind mapping is a tool to map your mind onto paper. The map you draw will rarely be as detailed as the actual understanding in your head, and it shouldn't be. It is not the main driver of learning; it is just a tool to capture and organize your thinking effectively.

When connecting your keywords, you can arrange them however you want, but try to avoid too much overlapping. Make sure you clearly show the relationships between the keywords, such as:

Freely map your mind until you feel fairly confident about the general relationships between the keywords before moving into the next stage of learning: The Analysis Stage.