No. #24

Weber–Fechner Law
- Sensory Perception's Logarithmic Scale

The Weber–Fechner law describes the logarithmic relationship between stimulus magnitude and perceived intensity. In product design, this affects how incremental changes in a product's features or services are perceived by users.

Read more on Wikipedia

Product example

Adjustments in a software's response time may need to be significant to be noticed by users, due to the logarithmic nature of sensory perception.

Empathy tips

1

Adjust Expectations

Ensure product changes are substantial enough to be perceived.

2

User Feedback on Changes

Collect user feedback to gauge the perceptibility of changes.

3

Incremental Improvements

Plan for incremental improvements to exceed the sensory threshold.

4

Sensory Testing

Conduct tests to understand the limits of sensory perception in your product's context.

Need an empathic partner?

Anna Lundqvist portrait
Anna Lundqvist
UX Designer and AI Ethics Strategist guiding innovative product development and educational workshops
Eddy Salzmann portrait
Eddy Salzmann
Design lead and team culture enthusiast driving products and design processes
Ola Möller portrait
Ola Möller
Founder of MethodKit who has a passion for organisations and seeing the big picture
Hire us