@inproceedings{752a4c72831a46e990f9e07101e124ed,
title = "Psychometric Analysis of Scales for Usability Evaluation of Pointing Devices",
abstract = "Usability evaluation involves measuring user performance (effectiveness and efficiency) and registering the user{\textquoteright}s perception of satisfaction related aspects. The paper reports on a method for assessing the satisfaction component, in computer handheld pointing devices, through a series of ratings related to three dimensions: comfort (discomfort), ease of use (per task performed) and effort (gripping, pointing, clicking). Cronbach{\textquoteright}s alpha is obtained as an estimate of the reliability of the assessment method made up of the multiple attribute evaluation of discomfort, ease of use and effort, based on Likert scales. Results revealed high values of internal consistency within each subjective dimension. Increased internal consistency would be obtained by removing the shoulder discomfort attribute from the discomfort evaluation questionnaire, and gripping and clicking attributes from the effort evaluation questionnaire. These divergences indicate that participants perceived these attributes as fundamentally different from the rest of the attributes within the evaluation dimensions.",
keywords = "Discomfort, Ease of use, Effort, Ergonomics, Human-systems integration, Internal consistency",
author = "Coelho, {Denis A.} and Louren{\c c}o, {Miguel L.} and Nunes, {Isabel L.}",
note = "info:eu-repo/grantAgreement/FCT/5876/147350/PT# The current study was funded in part by Fundacao para a Ciencia e a Tecnologia project UID/EMS/00151/2013 C-MAST.T; AHFE 2017 International Conference on Human Factors and Systems Interaction, 2017 ; Conference date: 17-07-2017 Through 21-07-2017",
year = "2018",
month = jan,
day = "1",
doi = "10.1007/978-3-319-60366-7_39",
language = "English",
isbn = "978-3-319-60365-0",
series = "Advances in Intelligent Systems and Computing",
publisher = "Springer Verlag",
pages = "419--426",
editor = "Nunes, {I. L.}",
booktitle = "Advances in Human Factors and Systems Interaction - Proceedings of the AHFE 2017 International Conference on Human Factors and Systems Interaction, 2017",
address = "Germany",
}