From expert-derived user needs to user-perceived ease of use and usefulness: a two-phase mixed-methods evaluation framework.

ABSTRACT: Underspecified user needs and frequent lack of a gold standard reference are typical barriers to technology evaluation. To address this problem, this paper presents a two-phase evaluation framework involving usability experts (phase 1) and end-users (phase 2). In phase 1, a cross-system functionality alignment between expert-derived user needs and system functions was performed to inform the choice of "the best available" comparison system to enable a cognitive walkthrough in phase 1 and a comparative effectiveness evaluation in phase 2. During phase 2, five quantitative and qualitative evaluation methods are mixed to assess usability: time-motion analysis, software log, questionnaires - System Usability Scale and the Unified Theory of Acceptance of Use of Technology, think-aloud protocols

SUBMITTER: Boland MR 

PROVIDER: S-EPMC4055529 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature