Enhancing Learning Management Systems Utility for Blind Students: A Task-Oriented, User-Centered, Multi-Method Evaluation Technique.
01 Jan 2013-Vol. 12, Iss: 1, pp 1-32
TL;DR: It is demonstrated how TUME can be used to identify the unique problems and challenges of specific user types in using Web-based applications and suggests po-tential solutions.
Abstract: This paper presents a novel task-oriented, user-centered, multi-method evaluation (TUME) tech-nique and shows how it is useful in providing a more complete, practical and solution-oriented assessment of the accessibility and usability of Learning Management Systems (LMS) for blind and visually impaired (BVI) students. Novel components of TUME include a purposeful integra-tion of a multi-theoretic foundation and multiple methods to accurately identify users’ accessibil-ity and usability problems in Web interaction and identify design problems and solutions to en-sure technical feasibility of recommendations. The problems identified by TUME remain hidden from extant evaluation methods - therefore, these problems remain in Web-based applications. As a result, evaluation of Web-based applications remains confounded by users’ Web interaction challenges; their utility for specific user types remains unclear. Without appropriate evaluation of users’ problems and challenges in using Web-based applications, we cannot begin to solve these problems and challenges. This paper demonstrates how TUME can be used to identify the unique problems and challenges of specific user types in using Web-based applications and suggests po-tential solutions. The outcome is an accurate understanding of specific design elements that pre-sent roadblocks and challenges for the user in interacting with the Web-based application and feasible design modifications to potentially improve the utility of these applications for specific user types.
Citations
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TL;DR: The findings of this study show that the experimental group encountered fewer number of help-seeking situations than the control group when interacting with the experimental and baseline versions of a DL.
Abstract: Blind and visually impaired (BVI) users experience vulnerabilities in digital library (DL) environments largely due to limitations in DL design that prevent them from effectively interacting with DL content and features. Existing research has not adequately examined how BVI users interact with DLs, nor the typical problems encountered during interactions. This is the first study conducted to test whether implementing help features corresponding to BVI users’ needs can reduce five critical help-seeking situations they typically encounter, with the goal to further enhance usability of DLs. Multiple data collection methods including pre-questionnaires, think-aloud protocols, transaction logs, and pre and post search interviews, were employed in an experimental design. Forty subjects were divided into two groups with similar demographic data based on data generated from pre-questionnaires. The findings of this study show that the experimental group encountered fewer number of help-seeking situations than the control group when interacting with the experimental and baseline versions of a DL. Moreover, the experimental group outperformed the control group on perceived usefulness of the DL features, ease of use of the DL, and DL satisfaction. This study provides theoretical and practical contributions to the field of library and information science. Theoretically, this study frames vulnerabilities of BVI users within the social model of disability in which improper DL design impairs their ability to effectively access and use DLs. Practically, this study takes into account BVI users’ critical help-seeking situations and further translates these into the design of help features to improve the usability of DLs.
25 citations
Cites background from "Enhancing Learning Management Syste..."
...Prior research (Babu & Singh, 2013; Clark, 2006; Di Blas et al., 2004; Leuthold, Bargas-Avila & Opwis, 2008) has consistently shown that while these supports are necessary for technical accessibility, they do not fully account for the differing abilities, needs, and challenges of BVI users in…...
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TL;DR: This paper raises awareness of design choices that can unintentionally bar blind information seekers from DL access, and further suggests solutions to reduce these design problems for blind users.
Abstract: Purpose
The purpose of this study is to explore design issues hampering the accessibility of digital libraries (DLs) for first-time blind users.
Design/methodology/approach
A combination of questionnaire, pre-interview, think-aloud and post-interview methods was used to collect data on non-visual interaction experiences with American Memory Digital Collection (AMDC) from 15 blind participants. Qualitative analysis via open coding revealed recurring themes on design problems and consequent difficulties for blind users in accessing DLs.
Findings
It was found that AMDC is not blind-friendly. Five categories of design problems were identified. Participants faced difficulty perceiving, operating and understanding content and controls needed for information retrieval.
Research limitations/implications
This paper does not offer a comprehensive set of design issues prevalent across DL design models, instead it focuses on design problems observed in a publicly available DL.
Practical implications
This paper raises awareness of design choices that can unintentionally bar blind information seekers from DL access, and further suggests solutions to reduce these design problems for blind users.
Originality/value
The paper’s originality is its identification of unique design problems that prevent blind users from effectively interacting with DLs.
13 citations
Cites background from "Enhancing Learning Management Syste..."
...The Web Content Accessibility Guidelines (WCAG) (W3C, 2005) addressed Web page interoperability with the SR. WCAG compliance is necessary but not sufficient to create a blind-friendly digital environment (Babu and Singh, 2013)....
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...The sight-centred design of digital resources presents challenges in SR-mediated interaction (Babu and Singh, 2013)....
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...WCAG compliance is necessary but not sufficient to create a blind-friendly digital environment (Babu and Singh, 2013)....
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...However, many users prefer listening to the page in chunks, rather than this continuous audio stream (Babu and Singh, 2013)....
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Dissertation•
01 Sep 2017
TL;DR: This research aims to provide a further understanding of the problems blind users have on the web by comparing and contrasting problems between blind and sighted users and testing how design solutions to prevalent problems benefit blind users’ experience.
Abstract: The web is an eminently visual medium. However, not everyone accesses web content visually. Research shows that using the web is challenging for blind users. To create a good user experience for blind users on the web, we need a comprehensive understanding of the users’ problems. Currently, there is little knowledge about the problem differences between blind and sighted users, which makes it difficult to suggest and test design solutions that address these problems.
This research aims to provide a further understanding of the problems blind users have on the web by comparing and contrasting problems between blind and sighted users and testing how design solutions to prevalent problems benefit blind users’ experience.
The first study draws together the research literature into a common unified definition of web accessibility that was used to operationalise studies. The second study compared which verbal protocol (concurrent or retrospective) is better in user-based studies. The results showed that retrospective verbal protocol is a better option for eliciting problems on the web for blind and sighted users.
Then, an empirical study compared the problems between blind and sighted users on the web. The results showed that the problems the two user groups encounter largely differ. There are specific problem types distinct to blind users, but also the characteristics of the problem types that had instances by both user groups were very different. Moreover, many problems blind users encounter were in relation to the search and browse features of the websites.
A further investigation by two studies with blind users of how specific design solutions to prevalent problems users had (poor page structure, lack of feedback and excessive effort) in this specific design aspect showed that simple design solutions improve specific aspects of users’ experience. Although, for major improvements in the overall user experience a combination of design solutions is needed.
11 citations
Additional excerpts
...…2004; Lazar et al., 2012; Ramayah, Jaafar, & Yatim, 2013; Yoon, Newberry, Hulscher, & Dols, 2013), non-descriptive links (AbuDoush et al., 2013; R. Babu & Singh, 2013a; Brebner & Parkinson, 2006; Byerley & Beth Chambers, 2002; Disability Rights Commission, 2004; Federici et al., 2005; André…...
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DOI•
23 Jan 2014TL;DR: It shows how blind users think, act and perceive in performing common social media functions non-visually, and has implications for the design of non-visual user interfaces to access social media through ‘Internet of Things’ and in multi-tasking situations.
Abstract: Social media allow people to communicate, collaborate and socialize for personal and professional matters. However, their sight-centered design can present access and usability problems for the blind. Existing quantitative approaches to usability testing do not provide in-depth assessment of the problem. This paper presents a qualitative approach to test social media usability, and illustrates its application to evaluate Facebook for the blind. Think-aloud observation of six blind participants generated verbal evidence of their Facebook interaction experiences. Verbal protocol analysis explained the nature of interaction challenges in performing common Facebook functions. Design standards analysis explained design errors in Facebook interface. It helped identify remedial measures to potentially improve Facebook usability. Findings demonstrate the utility of the qualitative approach to feasibly evaluate social media usability for blind users. It shows how blind users think, act and perceive in performing common social media functions non-visually. This has implications for the design of non-visual user interfaces to access social media through ‘Internet of Things’ and in multi-tasking situations.
9 citations
Cites background or methods from "Enhancing Learning Management Syste..."
...Its hallmark is a combination user-centered and task-based approach, [15] with verbal protocol analysis, [5] an integrated problemsolving framework [11] and design standards analysis [12] for an in-depth, contextually-situated and experiential understanding of the problem....
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...Design standard analysis [12] identified design errors responsible and potential remedial measures....
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...Babu and Singh [12] employed design standards analysis to determine the accessibility and usability character of an interaction challenge....
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...[5] Babu, Singh and Ganesh [15] adapted VPA for a closer examination of blind users’ actions in completing online tasks....
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01 Jan 2015
TL;DR: Results show that locating Friend's profile and Timeline, reading, writing, and posting messages were significantly challenging, and participants needed additional time and effort to perform these basic SNS functions that are integral parts of informal learning activities.
Abstract: Social Networking Sites (SNS) are increasingly used in academia to facilitate informal learning, knowledge co-creation, and collaborative problem-solving. Deriving these pedagogic benefits requires SNS usability for all. This paper reports results of an early investigation into SNS usability for blind students. Think-aloud observations generated verbal evidence of six participants' Facebook interaction experiences. Verbal protocol analysis revealed where and how challenges arose in online social interactions. Design standards analysis identified responsible interface elements and potential remedial measures. Results show that locating Friend's profile and Timeline, reading, writing, and posting messages were significantly challenging. Participants needed additional time and effort, and occasionally sighted help, to perform these basic SNS functions that are integral parts of informal learning activities. Feasible design improvements are proposed that merit further investigation. Implications for educators, learning technologists, cognitive scientists, and usability experts are discussed.
8 citations
References
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TL;DR: In this article, the authors report the results of a retrospective survey of participants in a technology-based exemplary transition program for college-bound youth and report how participants perceive the impact of key components, including technology-enriched summer study and year-round computer and Internet activities, on their self-determination, social, college, and career skills.
Abstract: Transitioning from high school to employment or postsecondary education is a critical juncture in any person's life. For students with disabilities, the complexities associated with such pivotal decisions are compounded, increasing the need for transition preparation and ongoing support to develop self-determination, social, academic, and career skills. Although many programs have offered services to students during transition periods, there is little empirical research on the long-term impact of specific support activities, including those that employ computers and the Internet. This article reports the results of a retrospective survey of participants in a technology-based exemplary transition program for college-bound youth. It reports how participants perceive the impact of key components, including technology-enriched summer study and year-round computer and Internet activities, on their self-determination, social, college, and career skills. Recommendations for applications to transition programs as...
43 citations
"Enhancing Learning Management Syste..." refers background in this paper
...While LMS are designed for typical sighted students, it is believed that BVI students too can maximize their educational outcomes through their effective use (Kim-Rupnow & Burgstahler, 2004)....
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TL;DR: In this article, a Web-based interactive homework quiz and tutorial package was devised to improve the learning of first-year undergraduate chemistry students. Butte et al. found that students were motivated to pursue additional practice with the quizzes and associated tutorial information, as they perceived some benefit in this student-centered study tool.
Abstract: This study presents a Web-based interactive homework quiz and tutorial package that we have devised to improve the learning of first-year undergraduate chemistry students. We developed this automated scheme, based on WWWAssign, to produce randomly generated quizzes from a large database of questions, instantaneously grade that homework, give a fully-worked solution, and provide individually targeted tutorial assistance. Success in these quizzes was a necessary requirement before taking supervised tests. We found a positive correlation at the p= 0.1 level (90%) between voluntary extra use of the quizzes in the interactive package and the final course grade. All students undertook more quizzes than the base course requirement even though the quiz grades did not contribute to the total course grades. We suggest that students were motivated to pursue additional practice with the quizzes and associated tutorial information, as they perceived some benefit in this student-centered study tool and could access it ...
43 citations
TL;DR: In this paper, a special issue brings together researchers who have been investigating young people who are often described as Net Generation or Digital Native learners (Tapscott 1998, 2009; Prensky 2001; Palf...
Abstract: This special issue brings together researchers who have been investigating young people who are often described as Net Generation or Digital Native learners (Tapscott 1998, 2009; Prensky 2001; Palf...
42 citations
10 May 2003
TL;DR: Bloom's taxonomy is reviewed as a richer descriptive framework for programmers' knowledge of code and how various software maintenance tasks map to knowledge levels in this hierarchy is illustrated.
Abstract: Programmers must attain knowledge about a system before they can perform specific software maintenance tasks on it. Traditionally, computer scientists have described the activity of attaining this knowledge as 'software comprehension'. However, if we look at the educational literature, attainable knowledge has been described with much finer granularity. Bloom's (1956) taxonomy identifies six separate levels of knowledge within the cognitive domain, one of which refers to a (more constricted) definition of comprehension. Several other levels in Bloom's taxonomy seem to correlate more directly to specific software maintenance tasks. This article reviews Bloom's taxonomy as a richer descriptive framework for programmers' knowledge of code and illustrates how various software maintenance tasks map to knowledge levels in this hierarchy. A pilot study is presented showing how participants' knowledge of software may differ at various levels of this hierarchy.
40 citations
Book•
12 Sep 1996
35 citations