an article by Philipp Brauner, Ralf Philipsen, André Calero Valdez and Martina Ziefle (RWTH Aachen University, Germany) published in Behaviour and Information Technology Volume 38 Issue 12 (December 2019)
Abstract
With the advent of artificial intelligence (AI) methods, smart decision support systems (DSSs) are becoming ubiquitous. Such systems help reduce complexity for operators by automating data integration tasks and recommending actions.
However, these systems are sometimes flawed.
It is not sufficiently understood whether, when and why operators comply with such systems in erroneous or correct cases.
We empirically investigate compliance with correct and defective DSSs, the influence of correct and erroneous DSS's on performance and subjective factors related to compliance. In the study, a business game was used as an experimental setting in which 40 users took part.
The impact of system correctness on user acceptance, trust, compliance and overall performance was investigated. The results show that the defective system reduces trust in automation (−47%), reduces usefulness (−58%), reduces acceptance (−62%) and reduces overall performance (−32%).
Overall, the defective system was less user-friendly (−27%).
Nevertheless, users who rated the system's usability higher, outperformed users who rated it lower. Usability is therefore an intermediary that compensates for the negative influence of erroneous DSSs.
Reading this I am visualising HAL in 2001, a space odyssey
Showing posts with label usability. Show all posts
Showing posts with label usability. Show all posts
Wednesday, 11 December 2019
Thursday, 18 July 2013
Are e-readers suitable tools for scholarly work? Results from a user test
an article by Siegfried Schomisch, Maria Zens and Philipp Mayr (GESIS – Leibniz Institute for the Social Sciences, Cologne, Germany) published in Online Information Review Volume 37 Issue 3 (2013)
Abstract
Purpose
The purpose of this paper is to offer insights into the usability, acceptance and limitations of e-readers with regard to the specific requirements of scholarly text work. To fit into the academic workflow, non-linear reading, bookmarking, commenting, extracting text or the integration of non-textual elements must be supported.
Design/methodology/approach
A group of social science students were questioned about their experiences with electronic publications for study purposes. This same group executed several text-related tasks with the digitised material presented to them in two different file formats on four different e-readers. Their performances were subsequently evaluated in detail.
Findings
E-publications have made advances in the academic world; however e-readers do not yet fit seamlessly into the established chain of scholarly text-processing focusing on how readers use material during and after reading. The authors’ tests revealed major deficiencies in these techniques.
Originality/value
The usability test of e-readers in a scientific context aligns with both studies on the prevalence of e-books in the sciences and technical test reports of portable reading devices. Still, it takes a distinctive angle in focusing on the characteristics and procedures of textual work in the social sciences and measures the usability of e-readers and file-features against these standards.
Abstract
Purpose
The purpose of this paper is to offer insights into the usability, acceptance and limitations of e-readers with regard to the specific requirements of scholarly text work. To fit into the academic workflow, non-linear reading, bookmarking, commenting, extracting text or the integration of non-textual elements must be supported.
Design/methodology/approach
A group of social science students were questioned about their experiences with electronic publications for study purposes. This same group executed several text-related tasks with the digitised material presented to them in two different file formats on four different e-readers. Their performances were subsequently evaluated in detail.
Findings
E-publications have made advances in the academic world; however e-readers do not yet fit seamlessly into the established chain of scholarly text-processing focusing on how readers use material during and after reading. The authors’ tests revealed major deficiencies in these techniques.
Originality/value
The usability test of e-readers in a scientific context aligns with both studies on the prevalence of e-books in the sciences and technical test reports of portable reading devices. Still, it takes a distinctive angle in focusing on the characteristics and procedures of textual work in the social sciences and measures the usability of e-readers and file-features against these standards.
Wednesday, 22 August 2012
Is beautiful really usable? Toward understanding the relation between usability, aesthetics, and affect in HCI
an article by Alexandre N. Tuch, Sandra P. Roth, Klaus Opwis and Javier A. Bargas-Avila (University of Basel, Switzerland) and Kasper Hornbæk (University of Copenhagen, Denmark) published in Computers in Human Behavior Volume 28 Issue 5 (September 2012)
Abstract
This paper analyzes the relation between usability and aesthetics.
In a laboratory study, 80 participants used one of four different versions of the same online shop, differing in interface-aesthetics (low vs. high) and interface-usability (low vs. high).
Participants had to find specific items and rate the shop before and after usage on perceived aesthetics and perceived usability, which were assessed using four validated instruments.
Results show that aesthetics does not affect perceived usability. In contrast, usability has an effect on post-use perceived aesthetics.
Our findings show that the “what is beautiful is usable” notion, which assumes that aesthetics enhances the perception of usability, can be reversed under certain conditions (here: strong usability manipulation combined with a medium to large aesthetics manipulation).
Furthermore, our results indicate that the user’s affective experience with the usability of the shop might serve as a mediator variable within the aesthetics–usability relation: The frustration of poor usability lowers ratings on perceived aesthetics.
The significance of the results is discussed in context of the existing research on the relation between aesthetics and usability.
Highlights
► This study analyzes the relation between usability and aesthetics within websites.
► Results show that good usability enhances the perception of classical aesthetics.
► The effect of usability on aesthetics is mediated by user’s affective response.
► The frustration of poor usability lowers ratings on perceived aesthetics.
► Usability is manipulated via information architecture without changing page layout.
Abstract
This paper analyzes the relation between usability and aesthetics.
In a laboratory study, 80 participants used one of four different versions of the same online shop, differing in interface-aesthetics (low vs. high) and interface-usability (low vs. high).
Participants had to find specific items and rate the shop before and after usage on perceived aesthetics and perceived usability, which were assessed using four validated instruments.
Results show that aesthetics does not affect perceived usability. In contrast, usability has an effect on post-use perceived aesthetics.
Our findings show that the “what is beautiful is usable” notion, which assumes that aesthetics enhances the perception of usability, can be reversed under certain conditions (here: strong usability manipulation combined with a medium to large aesthetics manipulation).
Furthermore, our results indicate that the user’s affective experience with the usability of the shop might serve as a mediator variable within the aesthetics–usability relation: The frustration of poor usability lowers ratings on perceived aesthetics.
The significance of the results is discussed in context of the existing research on the relation between aesthetics and usability.
Highlights
► This study analyzes the relation between usability and aesthetics within websites.
► Results show that good usability enhances the perception of classical aesthetics.
► The effect of usability on aesthetics is mediated by user’s affective response.
► The frustration of poor usability lowers ratings on perceived aesthetics.
► Usability is manipulated via information architecture without changing page layout.
Monday, 14 May 2012
Users’ Abilities to Review Web Site Pages
an article by Sanne Elling and Leo Lentz (Utrecht University, Netherlands) and Menno de Jong (University of Twente, Enschede, Netherlands) published in Journal of Business and Technical Communication Volume 26 Number 2 (April 2012)
Abstract
Web sites increasingly encourage users to provide comments on the quality of the content by clicking on a feedback button and filling out a feedback form. Little is known about users’ abilities to provide such feedback. To guide the development of evaluation tools, this study examines to what extent users with various background characteristics are able to provide useful comments on informational Web sites.
Results show that it is important to keep the feedback tools both simple and attractive so that users will be able and willing to provide useful feedback on Web site pages.
Abstract
Web sites increasingly encourage users to provide comments on the quality of the content by clicking on a feedback button and filling out a feedback form. Little is known about users’ abilities to provide such feedback. To guide the development of evaluation tools, this study examines to what extent users with various background characteristics are able to provide useful comments on informational Web sites.
Results show that it is important to keep the feedback tools both simple and attractive so that users will be able and willing to provide useful feedback on Web site pages.
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