This document discusses principles of intuitive user interface design such as recognition over recall, flexibility and efficiency, minimalist aesthetic design, recognizing and recovering from errors, and providing helpful guidance to users. Some key points include designing for recognition rather than relying on users' recall of codes or extra steps, providing flexible options that are efficient for most common tasks, using minimal yet clear visual designs with high signal and low noise, clearly communicating error messages and solutions, and assisting users with helpful examples, guidance and additional information.

1. HEURISTICS
PART 2
Scott Klemmer
www.hci-class.org

2. Recognition
Over Recall

3. Photo by Scott Klemmer; taken at Stanford HCI lunch
Recognition:Avoid codes

4. Sundance Kabuki movie tickets
Recognition:Avoid extra hurdles

5. Adobe Dreamweaver New Document dialog
Recognition with previews

6. Apple iWeb Choose a template dialog
Recognition with previews

7. Flexibility &
Efficiency

8. FirefoxView menu
Flexible shortcuts

9. Expedia hotel search
Flexible defaults with options

10. BusyCal weather in week view
Flexible: ambient information
• Ambient

11. Google Gmail automatic unsubscription
Flexible proactivity

12. Galco’s Soda Pop Stop
Flexibility: Recommendations

13. Amazon Customer Discussions
Flexibility: keep it relevant

14. User-modified remote control courtesy Bill Moggridge
Flexibility: keep it relevant

15. Aesthetic &
Minimalist Design

16. The Weather Channel
Minimalism: above the fold

17. Reliable Copier Service checkout screen
Minimalism: signal-to-noise

18. Google Help survey
Minimalism: signal-to-noise

19. iWantMyName
Minimalist Login

20. American Airlines flight search
Minimalism: Redundancy

21. Nelnet
Minimalism: functionality

22. Recognize, Diagnose, &
Recover from Errors

23. Propeller Island
Errors: make problem clear
23

24. NASA event registration
Errors: make problem clear

25. Errors: Provide a solution

26. Errors: show a path forward

27. ITA Software
Errors: propose an alternative
• Control & Freedom

28. Firefox Get Me Out of Here
Recognize Errors

29. Help

30. PHP.net
Help learning with examples
30

31. UPS
Help choices with examples

32. Microsoft Word for Mac, print warning dialog
Help guide the way

33. Help show the steps

34. eBay
Help point things out

35. EnVision mailing list
Help provide more information

36. EnVision mailing list
Help provide more information

37. EULA approval for TurboTax,T-Mobile Germany
Help clearly

38. Kimpton hotels
Help people have fun