Doherty Threshold describes a critical principle of human–computer interaction: productivity increases dramatically when systems respond quickly enough that users never feel like they are waiting — typically within 400 milliseconds.
Rooted in usability research and performance studies, this principle reminds us that perceived speed is as important as functionality. When interfaces respond instantly, users remain focused, engaged, and in control. Delays, even short ones, interrupt flow, increase frustration, and reduce efficiency. Effective interfaces prioritize performance, immediate feedback, and smooth interactions to maintain a continuous user rhythm.
This poster presents the Doherty Threshold as part of a broader collection exploring cognitive laws and UX fundamentals — created for designers, product teams, and anyone interested in how system responsiveness shapes productivity and user experience.
Museum-quality poster made on long-lasting matte (uncoated) paper.
