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How To Specify the Participant Group Size for Usability Studies: A Practitioner’s Guide

Ritch Macefield

Journal of Usability Studies, Volume 5, Issue 1, Nov 2009, pp. 34 - 45

Abstract

Using secondary literature, this article helps practitioners to specify the participant group size for a usability study. It is also designed to help practitioners understand and articulate the basis, risks, and implications associated with any specification. It is designed to be accessible to the typical practitioner and covers those study scenarios that are common in commercial contexts.

Practitioner’s Take Away

The following were the main findings in this article:

Article Contents

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How To Specify the Participant Group Size for Usability Studies: A Practitioner’s Guide