Power law
The power law of learning states that the time it takes to perform a task decreases with repetition, following a predictable pattern. As users repeat actions, they become more efficient at them. For instance, regularly using a familiar UI pattern like a left-aligned logo or vertical scrolling helps users navigate faster. When interfaces align with established patterns, users instinctively recall their previous experiences.
Here are some ways to implement this law:
- Keep it consistent: Stick to widely recognized patterns to give users additional repetitions of familiar elements, such as clickable logos for homepages or search bars in the top-right corner.
- Change thoughtfully: Innovation can be risky. If you're introducing a novel design pattern, ensure it greatly improves usability, speed, or satisfaction compared to familiar patterns.
- Facilitate learning: Speed up the learning curve by providing tooltips, onboarding guides, or contextual hints, helping users adapt to new patterns quickly.[1]
References
- The Power Law of Learning: Consistency vs. Innovation in User Interfaces | Nielsen Norman Group

