 ##  [Just-Noticeable Difference](/index.php/just-noticeable-difference) 

  ##  [Just-Noticeable Difference](https://humanitites.quantumdictionary.io/just-noticeable-difference-0) 

  
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**Humanities &amp; Arts Dictionary**

 
Definition

The smallest change in a sensory stimulus that an observer can reliably detect under specified conditions; in practical design contexts, it defines the minimum perceptible difference in attributes (e.g., color, size, spacing, loudness) between two stimuli for the relevant user population and environment.