Keyword: ‘jnd’

Considering just noticeable difference in assessments of physical accommodation for product design

In Publications

Garneau, C. J. and Parkinson, M. B. (2013). Ergonomics 56(11): 1777-1788.

Configuring products or environments for the size of their human users requires the consideration of several characteristics of the target user population, including body dimensions (anthropometry) and preferred interaction. Users are both adaptable and imperfect observers, which often makes it difficult for them to distinguish between candidate designs. This insensitivity is described by a concept called “just noticeable difference”, or JND. This paper presents an implementation of JND modelling and demonstrates how its use in the sizing of products or environments for target user populations can improve expected performance. Continue reading…

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