Measuring the usability of academic digital libraries Instrument development and validation

Measuring the usability of academic digital libraries Instrument development and validation Purpose – This study aims to develop a measurement instrument, which involves four usability dimensions of efficiency, effectiveness, satisfaction, and learnability, as a way of assessing the usability of academic digital libraries. Design/methodology/approach – To generate measurement items, previous research related to usability frameworks, usability guidelines, and empirical usability tests was reviewed. The measurement instrument was then verified in terms of reliability and validity, empirically using data from 230 actual users of an academic digital library. To ensure the reliability of the instrument, internal consistency of measurements, measurement item reliability, and construct reliability were examined. Construct validity, which consists of convergent validity and discriminant validity, was also examined on the basis of confirmatory factor analysis using structural equation modeling. Findings – The usability evaluation instrument suggested in this study comprises four dimensions: efficiency, effectiveness, satisfaction, and learnability, and three to four items were identified to measure each dimension. Originality/value – To date, while many of the usability studies have relied on either experimental methods or inspection methods, few studies have been conducted to identify evaluation measures that can assess the usability of a digital library from a survey method. This study is one of a few studies to develop a measurement instrument tailored to academic digital library environments. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Electronic Library Emerald Publishing

Measuring the usability of academic digital libraries Instrument development and validation

The Electronic Library, Volume 29 (4): 15 – Aug 9, 2011

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Publisher
Emerald Publishing
Copyright
Copyright © 2011 Emerald Group Publishing Limited. All rights reserved.
ISSN
0264-0473
DOI
10.1108/02640471111156777
Publisher site
See Article on Publisher Site

Abstract

Purpose – This study aims to develop a measurement instrument, which involves four usability dimensions of efficiency, effectiveness, satisfaction, and learnability, as a way of assessing the usability of academic digital libraries. Design/methodology/approach – To generate measurement items, previous research related to usability frameworks, usability guidelines, and empirical usability tests was reviewed. The measurement instrument was then verified in terms of reliability and validity, empirically using data from 230 actual users of an academic digital library. To ensure the reliability of the instrument, internal consistency of measurements, measurement item reliability, and construct reliability were examined. Construct validity, which consists of convergent validity and discriminant validity, was also examined on the basis of confirmatory factor analysis using structural equation modeling. Findings – The usability evaluation instrument suggested in this study comprises four dimensions: efficiency, effectiveness, satisfaction, and learnability, and three to four items were identified to measure each dimension. Originality/value – To date, while many of the usability studies have relied on either experimental methods or inspection methods, few studies have been conducted to identify evaluation measures that can assess the usability of a digital library from a survey method. This study is one of a few studies to develop a measurement instrument tailored to academic digital library environments.

Journal

The Electronic LibraryEmerald Publishing

Published: Aug 9, 2011

Keywords: Digital libraries; Academic libraries; Measurement

References

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