Quantifying usability via task flow-based usability checklists for user-centered design

Toshihisa Doi, Toshiki Yamaoka

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, we investigated the effectiveness of a method to quantify the overall product usability using an expert review. The expert review involved a general-purpose task flow-based usability checklist that provided a single quantitative usability score. This checklist was expected to reduce rating variation among evaluators. To confirm the effectiveness of the checklist, two experiments were performed. In Experiment 1, the usability score obtained using the proposed checklist was compared with traditional usability measures (task completion ration, task completion time, and subjective rating). The results demonstrated that the usability score obtained using the proposed checklist shows a tendency similar to that of the traditional measures. In Experiment 2, we investigated the inter-rater agreement of the proposed checklist by comparing it with a similar method. The results demonstrate that the inter-rater agreement of the proposed task flow-based usability checklist is greater than that of structured user interface design and evaluation.

Original languageEnglish
Article number2
Pages (from-to)1-21
Number of pages21
JournalDesigns
Volume3
Issue number1
DOIs
Publication statusPublished - Mar 2019

Keywords

  • Checklist
  • Expert review
  • Rating variation
  • Task flow
  • Usability evaluation
  • User-centered design

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Engineering (miscellaneous)

Fingerprint Dive into the research topics of 'Quantifying usability via task flow-based usability checklists for user-centered design'. Together they form a unique fingerprint.

Cite this