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usability principle 7 comparison table
Subject is an instance of follow by is a kind of state
usability principle  principle 
usability principle 7usability principle
  • Recognizing that users are very sensitive to slow response time, and that they compare your system to others in this regard
  • keeping response time less than a second for most operations
  • warning users of longer delays and inform them of progress
 Ensure that response time is adequate

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