Subjective Usability, Mental Workload Assessments and Their Impact on Objective Human Performance - Human-Computer Interaction – INTERACT 2017 - Part II Access content directly
Conference Papers Year : 2017

Subjective Usability, Mental Workload Assessments and Their Impact on Objective Human Performance

Luca Longo
  • Function : Author
  • PersonId : 1012023

Abstract

Self-reporting procedures and inspection methods have been largely employed in the fields of interaction and web-design for assessing the usability of interfaces. However, there seems to be a propensity to ignore features related to end-users or the context of application during the usability assessment procedure. This research proposes the adoption of the construct of mental workload as an additional aid to inform interaction and web-design. A user-study has been performed in the context of human-web interaction. The main objective was to explore the relationship between the perception of usability of the interfaces of three popular web-sites and the mental workload imposed on end-users by a set of typical tasks executed over them. Usability scores computed employing the System Usability Scale were compared and related to the mental workload scores obtained employing the NASA Task Load Index and the Workload Profile self-reporting assessment procedures. Findings advise that perception of usability and subjective assessment of mental workload are two independent, not fully overlapping constructs. They measure two different aspects of the human-system interaction. This distinction enabled the demonstration of how these two constructs cab be jointly employed to better explain objective performance of end-users, a dimension of user experience, and informing interaction and web-design.
Fichier principal
Vignette du fichier
421760_1_En_13_Chapter.pdf (748.9 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01678491 , version 1 (09-01-2018)

Licence

Attribution

Identifiers

Cite

Luca Longo. Subjective Usability, Mental Workload Assessments and Their Impact on Objective Human Performance. 16th IFIP Conference on Human-Computer Interaction (INTERACT), Sep 2017, Bombay, India. pp.202-223, ⟨10.1007/978-3-319-67684-5_13⟩. ⟨hal-01678491⟩
87 View
518 Download

Altmetric

Share

Gmail Facebook X LinkedIn More