Harry Shi.

As a designer working across branding, marketing, content creation, and client-facing projects, I found 100 Things Every Designer Needs to Know About People to be one of those rare books that bridges the gap between design theory and human behaviour.

What makes this book valuable is its focus on the psychology behind design decisions. Rather than telling designers what looks good, it explains why people respond the way they do. The book explores how attention, memory, perception, decision-making, and emotion influence the way users interact with visual communication. Each principle is supported by research but presented in a practical and accessible way.

One of the strongest takeaways for me was the reminder that good design is ultimately about people, not aesthetics. As designers, it’s easy to become focused on visual trends, technical execution, or creative expression. This book shifts the focus back to understanding human behaviour and using that knowledge to create more effective experiences.

The insights are particularly relevant for designers who work with clients and business objectives. Understanding concepts such as cognitive load, attention spans, visual hierarchy, and decision-making helps explain why some designs perform better than others. These principles can strengthen not only creative work but also the rationale behind design recommendations when presenting ideas to clients and stakeholders.

I also appreciated the book’s concise format. Each chapter focuses on a single principle, making it easy to read in short sessions while still providing practical value. The content is applicable across multiple disciplines, including graphic design, UX design, marketing, advertising, and content creation.

If there is one limitation, it is that some of the research examples feel slightly dated. However, the underlying principles of human psychology remain highly relevant and continue to influence how people interact with design today.

Overall, I would highly recommend 100 Things Every Designer Needs to Know About People to any designer who wants to move beyond creating visually appealing work and develop a deeper understanding of the people they are designing for. It reinforces an important truth: successful design isn’t just about creativity, it’s about understanding human behaviour and using that understanding to communicate more effectively.