HUMAN COMPUTER INTERACTION EXPERT WITNESSES: TESTIFYING AND CONSULTING

Top human-computer interaction expert witnesses assist in legal cases involving technology, usability, and user experience. HCI is a multidisciplinary field combining elements of computer science, psychology, design, and human factors. Varying types of HCI expert witnesses may be hired to provide input into how users interact with digital systems such as websites, apps, software, or hardware.

1. Usability and User Experience (UX) Experts

The best human-computer interaction expert witnesses here focus on whether a digital product is intuitive, efficient, and user-friendly. In legal cases, they evaluate if the design helps users make informed decisions—or confuses or misleads them. Folks testify in lawsuits related to deceptive design, consumer fraud, and product usability failures.

2. Accessibility Experts

Accessibility-focused human-computer interaction expert witnesses specialize in ensuring that digital interfaces are usable by people with disabilities. SMEs may assess compliance with accessibility standards such as the Americans with Disabilities Act (ADA) or the Web Content Accessibility Guidelines (WCAG). Their testimony is central in lawsuits involving inaccessible websites or apps.

3. Human Factors and Ergonomics Specialists

The best human-computer interaction expert witnesses study how people physically and cognitively interact with machines and systems. Pros are commonly involved in product liability or workplace safety cases, especially where a confusing interface may have contributed to injury or error—such as in medical devices, machinery, or aviation systems.

4. Deceptive Design Analysts

Certain human-computer interaction expert witnesses specialize in identifying dark patterns—design tactics that trick users into taking actions they wouldn’t otherwise choose, such as subscribing, sharing data, or making purchases. Their insights are valuable in consumer protection cases and regulatory investigations.

5. Interaction Design Researchers

As human-computer interaction expert witnesses, focus on how interaction flows, screen layouts, and system feedback guide user behavior. Reviewers analyze design choices for clarity, intent, and effectiveness, and may testify about design best practices or violations of ethical standards.

Noted human-computer interaction expert witnesses bring tailored expertise to legal cases involving digital interfaces. Pros’ understanding of how humans interact with technology makes them essential in evaluating usability, fairness, safety, and compliance.