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Human-Computer Interaction for Lecture 1
- 1. Human-Computer Interaction Lecture 2 Dr.Abdallah Hassan (abdallah@mena.vt.edu)
- 2. Remember Interaction designprocess involves three components User Research Design and Prototyping Evaluation (Improvement) User Research Working with users rather than guessing (user-centric design) Invisible interfaces (task-oriented design)
- 3. User research isimportant Qualcomm device for truckers Early version had small buttons User research discovered surprising findings Truckers often have big hands Often wear gloves Better design Large touch screen Stylus pens
- 4. Case Study –Microsoft Office UI Design How did Microsoft involve users in the redesign of the Office Interface starting 2003? How did the design team make decisions based on user data rather than guessing?
- 5. Jensen Harris material Watch the presentation at https://www.youtube.com/watch?v=AHiNeUTgGkk&t=14s Read the Office user interface blog series at https://learn.microsoft.com/ar-sa/archive/blogs/jensenh/table-of-contents
- 6. Challenge of full-featuredsystems Microsoft Office is an example of a full-featured productivity application This type of application is usually required to include several features to fulfill the possible needs of its users The problem with the increased number of features Increased feeling that the application is complicated Increased difficulty to find or learn how to do things More focus on the tool than on the task Bloatware is a term often used to describe a product that seem to have too many features, too many megabytes, too slow, too difficult to use, or simply too much.
- 7. State of MicrosoftOffice 97 - 2003 Long series of press stories accusing office of being “bloated” A miles-long list of feature requests from customers
- 8. State of MicrosoftOffice 97 - 2003 Since 1997, People were feeling less in control of the program Menu and toolbar system was not scalable enough to fit the richness of the product Menus and toolbars are essentially full, people did not even notice new commands from version to version People were not finding or using new features
- 9. Earlier attempts toreduce perception of “bloat” Office 2000 introduced several new UI mechanisms Adaptive (Personalized) Menus Rafted toolbars The main idea behind the new UI mechanisms is to rely on customization to hide unnecessary items so the user does not see lots of menu items or toolbar buttons
- 10. Adaptive (Personalized) Menus Clicking a top-level menu opens a short list of most likely used commands by a user Clicking a chevron at the end of the menu expands the menu to show the full contents
- 11. Rafted toolbars Twoor more toolbars could share a line on the screen An algorithm predicts the least likely used toolbar buttons by the user The least likely used buttons are moved from the toolbar into an “overflow” area at the end
- 12. The added UImechanisms failed Customization was not easy and was not accurate This led to added complexity and inefficiency to the interface, why? Bad selection of short menu items appearing to the user requires him an additional scan of the full menu (scanning menus took twice as long) Features like adaptive menus and rafted toolbars were turned off by default later in applications using them “Auto-customization, unless it does a perfect job, is usually worse than no customization at all”
- 13. Why UI designfails “At Microsoft, (say, pre-2003), design decisions were mostly supported by guesswork” “much of what we did was based on feel, estimation, and guesswork” “Anything we would have done in the past would have been based more on guesswork and bias than on reality.”
- 14. Office UI designdecisions after 2003 Microsoft Office Customer Experience Improvement Program (CEIP) Office 2003 users see a balloon popping up asking "Help Make Office Better.“ Clicking on the balloon enrolls the user in the CEIP program and collects anonymous data about how he uses the software and on what kind of hardware
- 15. Data for Designteam of Office 2007 More than 1.3 billion sessions of usage data “We get so much Word and Outlook data that 70% of it is thrown away” “For the first time, we have the data we need to make intelligent decisions” which commands people use often and which they don't which commands are used in sequence with which other commands which commands are used 7x more with the keyboard than with the mouse how many documents they use at once how big people's screens are
- 16. Activity If youare involved in the design of a mobile application for football lovers to watch matches and know match results and statistics Think about a layout of the interface that you may consider usable and easy Can you think of a plan of user research, how can you conduct it to understand user needs and preferences better Can you think how you can gather usage data similar to the way Microsoft did for the design of Office 2007, what data can be useful, how can this data help improve the UI