1. Usability Darwin Web Standards 9 June 2011

2. Usability The ISO defines usability as "The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” Wikipedia

3. Usability The ISO defines usability as "The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” Wikipedia ISO 9241. Ergonomics of Human System Interaction A multi-part standard from the International Organization for Standardization (ISO), covering aspects of people working with computers. Originally titled Ergonomic requirements for office work with visual display terminals (VDTs).

4. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process.

5. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: http://www.useit.com

6. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: Learnability http://www.useit.com How easy is it for users to accomplish basic tasks the first time they encounter the design?

7. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: Learnability Efficiency http://www.useit.com Once users have learned the design, how quickly can they perform tasks?

8. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: Learnability Efficiency Memorability http://www.useit.com When users return to the design after a period of not using it, how easily can they reestablish proficiency?

9. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: Learnability Efficiency Memorability Errors http://www.useit.com How many errors do users make, how severe are these errors, and how easily can they recover from the errors?

10. Jakob Nielsen Usability is a quality attribute that assesses how easy user interfaces are to use. The word "usability" also refers to methods for improving ease-of-use during the design process. Usability is defined by five quality components: Learnability Efficiency Memorability Errors Satisfaction http://www.useit.com How pleasant is it to use the design?

12. Efficiency: Once users have learned the design, how quickly can they perform tasks?

13. Memorability: When users return to the design after a period of not using it, how easily can they reestablish proficiency?

14. Errors: How many errors do users make, how severe are these errors, and how easily can they recover from the errors?

17. They know and expect how their pages will work across operating systems and on different hardware platforms.

18. Their designs are explicitly intended to work in what we call the spectrum of degradability -- that is, consider the current Mozilla in the middle, with less advanced and broken browsers like Blazer, Netscape 4 and IE6 on one end, and more advanced browsers like OmniWeb, screen readers, and other accessibility devices on the other. Jeffrey Veen http://www.veen.com/jeff/archives/000503.html

19. Don’t Make Me Think

21. Is readable in about 2 hours (a medium plane flight)

23. We don't read pages. We scan them.

24. Create a clear visual hierarchy. One of the best ways to make a page easy to grasp in a hurry is to make sure that the appearance of the things on the page -- all of the visual cues -- clearly and accurately portray the relationships between the things on the page.

26. Don’t Make Me Think

27. Don’t Make Me Think

28. Don’t Make Me Think Omit Needless Words

29. Don’t Make Me Think

30. Don’t Make Me Think

31. Don’t Make Me Think

34. Aimed at web managers, developers

35. Define

36. Goals of the site

37. Key site users

38. Direct the content towards the usersRedish has done her homework and created a thorough overview of the issues in writing for the Web. Ironically, I must recommend that you read her every word so that you can find out why your customers won't read very many words on your website -- and what to do about it ; -- Jakob Nielsen

39. Letting Go of the Words List your major audiences Gather information about your audiences List major characteristics for each audience Gather your audiences’ questions, tasks and stories Use the information to create personas Include the persona’s goals and tasks Use this information to write scenarios for the site

42. Parents, teachers, students

45. Find a caravan park

48. Often these involve forms

49. Put the forms people want right away on the home page

50. Airline,

51. Accommodation

52. Real estate

53. Rental cars

54. Speak in the vernacular of your site visitors

55. Avoid using cute, or made-up words

59. Tries to achieve set objectives

60. May be done on a partially complete site (even sketches) Jakob Nielsen and Tom Landauer: testing five users will uncover about 85% of a site’s usability problems, and that there’s a serious case of diminishing returns for additional users. http://www.useit.com/alertbox/20000319.html

62. http://www.usertesting.com/

63. http://www.usabilityfirst.com/

64. Or you can do it yourself

65. Three or four people (per test)

66. Neighbour, colleague, relative

67. No need for a special lab

68. It’s important to re-run usability tests

71. Stupidly cool iPad Synthesizer App

72. Stupidly cool iPad Synthesizer App Skeuomorphic Design

73. Visualising blood tests

74. Visualising blood tests

75. Discussion

76. Links http://www.usabilityfirst.com/ http://www.usability.gov/ http://www.jungleminds.com/publications/articles/effective_usability_testing_for_intranet