Productivity soars when a computer and its users interact at a pace (<400ms) that ensures that neither has to wait on the other.

Walter J. Doherty
Walter J. Doherty

Researcher at IBM Systems, famous for his paper on the human-computer interactions and the requirement for a computer response time to be 400 milliseconds or less.

Doherty Threshold

In 1982 Walter J. Doherty and Ahrvind J. Thadani published, in the IBM Systems Journal, a research paper that set the requirement for computer response time to be 400 milliseconds, not 2,000 (2 seconds) which had been the previous standard. When a human being’s command was executed and returned an answer in under 400 milliseconds, it was deemed to exceed the Doherty threshold, and use of such applications were deemed to be “addicting” to users.

Wanna know more? Follow the source!

The text above was taken and slightly edited from the following sources.

The Collection of Books Every UX Designer Should Read!

The Collection of Books Every UX Designer Should Read! (Book) by Wizards of UX

  • UX Design
  • IxD
  • Laws of UX
  • Timing
Click to rate
1 Star2 Stars3 Stars4 Stars5 Stars
Loading...
Surprise me!