Integrating Accessibility Requirements Early and Late in Information System Development Yields Greater Inclusivity
Category: User-Centred Design · Effect: Strong effect · Year: 2024
Accessibility requirements are most effectively integrated into information system development during the initial requirement assessment and final testing phases, with active user involvement.
Design Takeaway
Embed accessibility considerations into the core of your design process, not as an afterthought, by actively involving target users throughout development, especially during requirements gathering and final validation.
Why It Matters
Designing information systems with accessibility in mind from the outset and validating with users ensures that people with disabilities are not excluded from essential information and services. This proactive approach leads to more inclusive products and broader market reach.
Key Finding
The research indicates that accessibility is primarily considered at the beginning (requirements) and end (testing) of the information system development lifecycle, and involving users is crucial for success.
Key Findings
- Accessibility integration is most prominent in the requirement assessment and testing phases.
- Involving potential users in the process is a common practice.
- Healthcare and education are the primary domains where accessibility in information systems is addressed.
- Most studies on this topic are recent.
Research Evidence
Aim: To explore how accessibility requirements are integrated into the development processes of information systems.
Method: Systematic Literature Review
Procedure: A systematic literature review was conducted by searching four major academic databases (Scopus, Web of Science, IEEE, ACM) and performing a snowball search to identify relevant primary studies. 34 papers were analyzed.
Sample Size: 34 papers
Context: Information system development, with a focus on accessibility for people with disabilities.
Design Principle
Inclusive design requires continuous user engagement and explicit consideration of diverse needs at critical project milestones.
How to Apply
When initiating a new information system project, create specific user stories and acceptance criteria related to accessibility. Schedule regular testing sessions with users who have disabilities throughout the development cycle.
Limitations
The review focuses on published literature, potentially missing industry best practices not formally documented. The specific methods and effectiveness of integration varied across studies.
Student Guide (IB Design Technology)
Simple Explanation: To make sure everyone can use your digital products, think about accessibility from the very start and test with people who have different needs.
Why This Matters: Understanding how to integrate accessibility ensures your design projects are usable by a wider audience, making them more impactful and ethical.
Critical Thinking: While this review identifies key phases for accessibility integration, it doesn't deeply explore the specific challenges or successful strategies within each phase across different types of information systems.
IA-Ready Paragraph: This research highlights the critical role of integrating accessibility requirements throughout the information system development lifecycle, particularly during the initial requirement assessment and final testing phases, emphasizing the necessity of active user involvement. This approach is vital for creating inclusive systems that cater to people with disabilities, ensuring broader usability and market access.
Project Tips
- Clearly define accessibility goals for your design project.
- Identify and recruit participants with diverse accessibility needs for user testing.
- Document how accessibility requirements were integrated into your design decisions.
How to Use in IA
- Reference this study when discussing the importance of user involvement and the timing of accessibility considerations in your design process.
- Use the findings to justify your chosen methods for incorporating accessibility into your design project.
Examiner Tips
- Demonstrate a clear understanding of how accessibility impacts user experience and system adoption.
- Show evidence of user involvement in your design process, particularly concerning accessibility.
Independent Variable: Integration of accessibility requirements into development phases.
Dependent Variable: Success of information systems in providing access for people with disabilities.
Controlled Variables: Type of information system, specific disability groups considered, development methodologies.
Strengths
- Comprehensive search strategy across multiple databases.
- Adherence to PRISMA guidelines ensures systematic and transparent review.
- Focus on a critical and often overlooked aspect of system development.
Critical Questions
- What are the most effective methods for involving users with disabilities in the requirement assessment phase?
- How can the integration of accessibility be measured beyond just testing, throughout the entire development process?
Extended Essay Application
- An Extended Essay could investigate the specific challenges and best practices for integrating accessibility into a particular type of information system (e.g., educational software, healthcare platforms) through case studies or interviews with developers.
- Further research could explore the long-term impact of early vs. late accessibility integration on system maintenance and user satisfaction.
Source
Understanding the integration of accessibility requirements in the development process of information systems: a systematic literature review · Requirements Engineering · 2024 · 10.1007/s00766-023-00409-8