A longitudinal evaluation of accessibility: higher education web sites

Purpose – Using Internet Archive's Wayback Machine, higher education web sites were retrospectively analyzed to study the effects that technological advances in web design have had on accessibility for persons with disabilities.Design/methodology/approach – A convenience sample of higher education web sites was studied for years 1997‐2002. The homepage and pages 1‐level down were evaluated. Web accessibility barrier (WAB) and complexity scores were calculated. Repeated measures analysis of variance (ANOVA) was used to determine trends in the data and Pearson's correlation (r) was computed to evaluate the relationship between accessibility and complexity.Findings – Higher education web sites become progressively inaccessible as complexity increases.Research limitations/implications – The WAB score is a proxy of web accessibility. While the WAB score can give an indication of the accessibility of a web site, it cannot differentiate between barriers posing minimal limitations and those posing absolute inacce...

[1]  Bob Godwin-Jones,et al.  EMERGING TECHNOLOGIES -- Accessibility and Web Design : Why Does It Matter? , 2001 .

[2]  Laurel A. Clyde.  School library Web sites: 1996-2002 , 2004, Electron. Libr..

[3]  Bambang Parmanto,et al.  Metric for Web accessibility evaluation , 2005, J. Assoc. Inf. Sci. Technol..

[4]  Alexander I. Rudnicky,et al.  Universal speech interfaces , 2001, INTR.

[5]  Enrico Pontelli,et al.  Intelligent non-visual navigation of complex HTML structures , 2002, Universal Access in the Information Society.

[6]  Peter Gregor,et al.  Auditing accessibility of UK Higher Education web sites , 2002, Interact. Comput..

[7]  Holly Yu,et al.  Web Accessibility and the Law: Recommendations for Implementation. , 2002 .

[8]  A. N. Franzblau,et al.  A primer of statistics for non-statisticians. , 1958 .

[9]  Tim Spindler.  Accessibility of Web Pages for Mid-Sized College and University Libraries , 2002 .

[10]  Annie Lang,et al.  Formal features of cyberspace: relationships between Web page complexity and site traffic , 1999 .

[11]  Gregg C. Vanderheiden,et al.  Web content accessibility guidelines 1.0 , 2001, INTR.

[12]  Bambang Parmanto,et al.  Web Content Accessibility of Consumer Health Information Web Sites for People with Disabilities: A Cross Sectional Evaluation , 2004, Journal of medical Internet research.

[13]  John Lescher.  Designing Web Sites for the Blind. , 2000 .

[14]  Kurt L. Johnson,et al.  Making Web‐based tables accessible for users of screen readers , 2002 .

[15]  James P. Egan,et al.  Signal detection theory and ROC analysis , 1975 .