(2). Principles of UX Design

🔑 Key Principles of UX Design – Laws of UX

These "laws" are psychological principles that help make designs intuitive, faster, and easier for users.

💡 "Users spend most of their time on other websites."

Meaning: People expect your product or app to work like other familiar ones.

Why It Matters: If your website/app behaves like popular ones (like Google, Amazon, or Instagram), users won’t need to relearn how to use it.

📌 Example:

✅ Design Tip: Stick to familiar patterns unless there’s a very good reason to innovate.

💡 "The time to reach a target depends on its size and distance."

Meaning: Bigger and closer buttons are easier and faster to click or tap.

Why It Matters: Small or far buttons increase user effort and mistakes.

📌 Example:

✅ Design Tip: Make important buttons large, noticeable, and within reach — especially on mobile.

💡 "The more choices you give, the longer the decision time."

Meaning: Too many options = decision overload = user confusion.

Why It Matters: A crowded interface slows users down and can overwhelm them.

📌 Example:

A food delivery app with just 3–5 categories (e.g., Pizza, Burgers, Desserts) loads faster than 20 categories.
Google’s homepage is famous for being simple — one input box, one main button.

✅ Design Tip: Simplify the interface by grouping or hiding less important choices.

💡 People can hold only about 7±2 items in their short-term memory.
🧠 Use chunking, steps, or grouping.

💡 Every system has a level of complexity. You can’t remove it — you can only shift it.
🎯 Try to keep complexity on your side, not the user’s.

Law	What It Says	Design Action
Jakob’s Law	Users expect familiar design patterns	Reuse common UI layouts & behavior
Fitts’s Law	Bigger & closer targets are easier to hit	Enlarge buttons & place within easy reach
Hick’s Law	More choices = slower decisions	Simplify options & declutter interfaces