# Laws of UX. Using Psychology to Design Better Products & Services
Jon Yablonski (2020)
#Design
Read on [[18-06-2023]]
Takeaways -
1. Useful principles to apply
2. We don't have design principles
1. We need to create personas to understand users' mental models and expectations.
---
Preface
- How to justify and validate design decisions?
- From the field of psychology - behavioural science, psychological principles.
-
**Content**
[[Jakob’s Law]]
[[Fitts’s Law]]
[[Hick’s Law]]
[[Miller’s Law]]
[[Postel’s Law]]
[[Peak–End Rule]]
[[Aesthetic–Usability Effect]]
[[von Restorff Effect]]
[[Tesler’s Law]]
[[Doherty Threshold]]
[[With Power Comes Responsibility]]
[[Applying Psychological Principles in Design]]