Five Visual Models to Master Complex Systems: Mind Maps, Concept Maps & More

In work and reading notes we often encounter terms like mental model, concept model, and concept map, which can be confusing; this article clarifies them.

In business model design, product design, UX design, and information architecture, naming and renaming things creates ambiguity.

Mind Map

Mind maps are an effective way to capture ideas by writing everything on a page and connecting related items with lines. They help transform fragments into organized thoughts and can be used for vision statements, daily notes, brainstorming, user interviews, and more.

Key steps:

Create a central node.

Expand ideas outward.

Capture ideas quickly.

Connect with lines.

Build a structure.

Follow a thought and diverge.

Work from known to unknown.

Return to center when ideas run out.

Increase density for richness.

Avoid judgment.

Play with the map.

Concept Map

Concept maps are more formal than mind maps; they name relationships between items. They are created by listing entries, editing the list, defining remaining items, building a matrix of terms, sorting entries, writing a framing statement, completing the structure, modifying, and applying typographic reinforcement.

System Map

System maps aim to describe a system as accurately as possible, helping teams become system experts and maintain a shared understanding as the system evolves.

Mental Model

A mental model represents how users perceive a complex system, focusing on core parts and ignoring irrelevant details. Drawing mental models helps teams understand user perspectives.

Concept Model

A concept model is a simplified explanation of how something works; it need not be complete, only useful. It conveys how others should think about a system, can explain value, and can be used to illustrate processes.

These five visual tools—mind maps, concept maps, system maps, mental models, and concept models—are just a subset of the many ways to visualize and communicate complex systems.