Implementing Recommendations From Web Accessibility Guidelines: Would They Also Provide Benefits to Nondisabled Users

Area of Science:

• Human-Computer Interaction
• Web Design and Development
• Usability Engineering

Background:

• Web accessibility guidelines exist for users with disabilities but are underutilized.
• Practitioners often believe these guidelines offer no advantages or may negatively impact nondisabled users.
• Empirical research on the effects of Web accessibility guidelines on nondisabled users is limited.

Purpose of the Study:

• To investigate the impact of Web accessibility guidelines on nondisabled users.
• To assess whether implementing Web accessibility guidelines provides benefits for the general user population.

Main Methods:

• Sixty-one nondisabled participants evaluated three websites with varying accessibility levels (high, low, very low).
• Accessibility levels were based on Web Content Accessibility Guidelines (WCAG) 2.0.
• Performance metrics (task completion time, completion rate) and user ratings (usability, aesthetics, workload, trustworthiness) were collected.

Main Results:

• Websites with high accessibility demonstrated superior performance (faster task completion, higher completion rates).
• High accessibility also led to significantly better user ratings across usability, aesthetics, workload, and trustworthiness.
• No significant differences were observed between low and very low accessibility conditions.

Conclusions:

• High conformance with Web accessibility guidelines can benefit users without disabilities.
• Findings challenge existing concerns among practitioners regarding the impact on nondisabled users.
• Encourages wider adoption of WCAG 2.0 for the benefit of all users.