Likert vs. Semantic Differential Scales: What’s the Difference?
If you’ve spent any amount of time designing questionnaires, you’ve almost certainly encountered the phrase Likert scale. In fact, the…
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FDA Revised Its (Final) Human Factors Guidance
On August 3, 2026, FDA revised Applying Human Factors and Usability Engineering to Medical Devices, the foundational guidance that has…
Lessons Learned from 4,947 Usability Study Sessions
If you’ve spent enough time behind the one-way mirror during usability study sessions, you begin to notice some interesting things.…
A Human Factors Guide to Surviving a Horror Film
Don’t be the Next Victim of Bad Design: Avoid These Deadly Usability Traps Spooky season is here, which means it’s…
