Most UX design is done under ideal conditions. But real users book flights in airports, file taxes at midnight, and navigate healthcare forms during medical emergencies. Designing for stress changes everything.
Cognitive Load Under Pressure
Stress narrows attention. Under pressure, users revert to scanning rather than reading. They skip instructions. They make mistakes. They give up. Your design needs to work for a stressed user, not just a rested one.
Practical Principles
Reduce choices. Decision fatigue is amplified under stress. Where possible, default to sensible options and let users adjust rather than choosing from scratch.
Make the primary action unmistakable. Under stress, users cannot hunt for the button. One clear CTA per screen. High contrast. Obvious placement.
