Capability Approach Enhances PET Design Beyond Usability

Why It Matters

Traditional usability focuses on how users interact with a system, but this can overlook the diverse real-world opportunities and barriers individuals face. By adopting a capability approach, designers can create PETs that genuinely empower users, especially those in vulnerable or marginalized groups, by considering their unique circumstances.

Key Finding

The study argues that to make PETs truly effective and adopted, designers must look beyond simple ease of use and consider the broader capabilities and circumstances of all potential users, especially those who are vulnerable.

Key Findings

• Usability studies alone are insufficient for the widespread adoption of PETs.
• A capability approach provides a more comprehensive framework for evaluating PETs by considering individual opportunities and contextual factors.
• Vulnerability, age, education, physical and mental ability, language, gender, and access to technology are crucial considerations for inclusive PET design.

Research Evidence

Aim: How can the capability approach be used to conceptualize and develop Privacy Enhancing Technologies (PETs) that are more inclusive and empowering for diverse user populations?

Method: Conceptual framework development and qualitative research

Procedure: The research proposes a new paradigm for PET development by drawing on Amartya Sen's capability approach. It advocates for evaluating the real opportunities individuals have to use PETs, considering factors like vulnerability, age, education, ability, language, gender, and access to technology, rather than solely focusing on utilitarian features for adoption.

Context: Privacy Enhancing Technologies (PETs) development and adoption

Design Principle

Design for capability, not just usability.

How to Apply

When designing any technology intended for broad use, especially those involving sensitive data or user autonomy, conduct user research that explores not just how users interact with the interface, but what opportunities and barriers they face in their daily lives that might affect their ability to use the technology effectively and safely.

Limitations

The paper is conceptual and proposes a framework; empirical validation of the proposed paradigm through extensive user studies would be beneficial.

Student Guide (IB Design Technology)

Simple Explanation: Instead of just making a privacy tool easy to use, think about whether people can actually *use* it well in their real lives, considering things like their age, if they have disabilities, or if they can even afford the technology.

Why This Matters: This research helps you understand that good design isn't just about making something look nice or be easy to click. It's about making sure your design truly helps people and gives them more options in their lives, especially if they are facing challenges.

Critical Thinking: How can a designer effectively measure or assess a user's 'capability' in a practical design project, and what are the ethical considerations when making assumptions about user capabilities?

IA-Ready Paragraph: This design project adopts a capability-centred approach, moving beyond a narrow focus on usability to consider the broader opportunities and challenges users face. By drawing on frameworks such as Amartya Sen's capability approach, the research aims to understand how personal and environmental circumstances influence a user's ability to effectively and equitably engage with the designed system, particularly for vulnerable populations.

Project Tips

• When researching users, ask questions that uncover their broader life circumstances and how they might impact technology use.
• Consider how your design might empower or disempower different user groups based on their capabilities.

How to Use in IA

• Use the concept of the capability approach to justify your user research methods and analysis, explaining how you went beyond basic usability to understand user opportunities.
• Reference this paper when discussing the limitations of purely usability-focused design and advocating for a more holistic user-centred approach.

Examiner Tips

• Demonstrate an understanding that user research should explore the 'why' and 'how' of user behaviour within their broader context, not just the 'what' of interface interaction.
• Show how you've considered factors beyond basic ergonomics and usability that might affect a user's ability to benefit from a design.

Independent Variable: Conceptual framework (Capability Approach vs. Utilitarian Usability)

Dependent Variable: Inclusivity and empowerment of PETs

Controlled Variables: User demographics, technological access, environmental context

Strengths

• Proposes a novel and more inclusive paradigm for PET development.
• Highlights the importance of considering diverse user needs and contexts.

Critical Questions

• What are the practical challenges in operationalizing the capability approach in design practice?
• How can designers balance the need for broad capability considerations with the practical constraints of a design project?

Extended Essay Application

• An Extended Essay could explore the application of the capability approach to a specific technology domain (e.g., educational software, healthcare apps) by conducting in-depth user research with diverse participants.
• An Extended Essay could critically analyze existing technologies through the lens of the capability approach, identifying areas for improvement in inclusivity.

Source

From Utility to Capability: A New Paradigm to Conceptualize and Develop Inclusive PETs · 2022 · 10.1145/3584318.3584323