Laws of UX: 28 UX Laws (Fitts's / Hick's / Miller's / Jakob's / Tesler's / Doherty / Peak-End / Von Restorff / 5 Gestalt Principles / Aesthetic-Usability … Bilingual Chinese-English, Organized by 6 Core Intent Clusters)
The complete essence of all 28 UX laws and psychological effects from Jon Yablonski’s *Laws of UX* 2.0, distilling decades of experimental findings from cognitive psychology into actionable mantras that PMs can directly apply to design decisions. Grouped into 6 clusters by underlying intent: ① Cognitive Load (Cognitive Load / Working Memory / Miller's Law / Chunking / Tesler's Law (Law of Conservation of Complexity) / Occam's Razor / Law of Prägnanz) — The brain has limited processing power, so subtract ruthlessly and shift complexity from the user to the system. ② Decision Friction (Hick's Law / Choice Overload / Cognitive Bias / Paradox of the Active User) — More options lead to slower, more anxious decisions; framing and wording skew judgment; users never read manuals. ③ Gestalt Grouping (Proximity / Similarity / Common Region / Uniform Connectedness / Closure / Symmetry / Continuity) — The human brain automatically groups visual elements; use spacing, borders, and color to control “what belongs with what.” ④ Time Perception and Motivation (Doherty Threshold 400ms / Flow / Goal-Gradient Effect / Zeigarnik Effect / Parkinson's Law / Peak-End Rule / Serial Position Effect) — Users’ perceived speed, progress, and memory matter more than objective data. ⑤ Familiarity and Resilience (Jakob's Law / Mental Model / Postel's Law) — Users expect your product to work the same way as others’ products; be liberal in what you accept, conservative in what you send. ⑥ Attention and Aesthetics (Selective Attention / Banner Blindness / Von Restorff Effect / Aesthetic-Usability Effect / Pareto Principle 80/20) — Highlight what matters, avoid ad-like visual patterns, and remember that attractive things feel more usable. Each entry includes definition, psychological origin, how to apply it, counterexamples, and when to use it. Written for non-technical PMs, with in-line explanations of jargon, in bilingual Chinese-English format. Designed for quick recall of “which law to remember next time you encounter interface problem X.”