Why it matters
Explains why a raise, a new possession or a gain stops registering as you get more.
Core term · Gustav Fechner
Just-Noticeable Difference
The smallest change you can actually detect — and it grows as the starting amount grows.
Areas of life
Moneyadaptationthe senses
How to handle it
Expect each added amount to feel smaller than the last.
Who shaped this idea
The thinker behind it
From concept to practice
Turn Just-Noticeable Difference into a question you can answer.
Psipas asks you one small, honest question at a time — and builds the picture from your answers.