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Transcript of { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most...
![Page 1: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/1.jpg)
{Building Blocks
Scientific foundations for Interface Design
HCI Remixed “Chapter 47: A Most Fitting Law”Presented by Sarah Deighan
![Page 2: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/2.jpg)
Gary Olson
Donald Bren Professor of Information& Computer ScienceUniversity of California - Irvine
Emeritus ProfessorUniversity of Michigan
Professor of psychologyInstitute of Psychology, Chinese Academy of Science – Beijing
CHI Academy, ACM SIGCHI, 2003CHI Lifetime Achievement Award, ACM SIGCHI, 2006
![Page 3: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/3.jpg)
![Page 4: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/4.jpg)
Human-Computer Interaction Collaboration
Technology Computer Supported
Cooperative Work Interface Design Intelligent Tools Organizational Issues
Cognitive Science Cognition in its
Social and Physical Settings
Problem-Solving and Reasoning
Communication
Gary OlsonProfessional Interests
![Page 5: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/5.jpg)
Paul M. Fitts
Psychologist,The Ohio State University
Psychologist,University of Michigan
Lieutenant Colonel,US Air Force
President of the Division of Applied Experimental andEngineering Psychology,American Psychological Association
President,Human Factors and Ergonomics Society
![Page 6: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/6.jpg)
Fitts’ Experiment
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The rate of performance of all the tasks studied increased uniformly as movement amplitude was decreased and as tolerance limits were extended.Pg 387
Fitts’ Conclusion
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MT = a + b log2 ( 2D / W )
MT = Movement Time W = Target Width D = Distance to Targeta & b = empirically determined constants
Fitts’ Law Video
Fitts’ Law
![Page 9: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/9.jpg)
What types of interactions or interfaces are exempt from Fitts’ Law?
Discussion Questions
![Page 10: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/10.jpg)
What do you believe is more useful to the HCI field, the equation or the principle represented?
Discussion Questions
![Page 11: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/11.jpg)
How important or unimportant is it for new interfaces to be assessed with quantitative methods as opposed to only qualitative methods?
Discussion Questions
![Page 12: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/12.jpg)
Do we as the HCI community focus too much on user feedback and qualitative evaluations?
Discussion Questions
![Page 13: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/13.jpg)
Ravin Balakrishnan
Professor & Canada Research ChairUniversity of Toronto
CHI Academy, ACM SIGCHI 2011
![Page 14: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/14.jpg)
Applying Fitts’ law principles to decrease MT by manipulating the variables Distance to the target Target Size Control-Device Gain
Applying Fitts’ Law
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Making the target appear on command Pop-up menus Drop-down menus Circle Menus
Bringing items to the cursor temporarily
Drag and Pop
Reducing distance to the target
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Taking the cursor to selectable itemsObject Pointing
Providing more than one cursorNinja cursorshttp://youtu.be/l0QM-RPlL8s
Reducing distance to the target
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Area Cursors
Point cursor Area Cursor
http://youtu.be/JUBXkD_8ZeQ
Increasing width of the target
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Expanding the target
Increasing width of the target
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Basic version Single gain setting that the user
must use
Dynamically adjusting gain “Sticky” targets
Manipulating Gain
AB
C
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What represents C-D gain in the equation for Fitts’ Law?
Discussion Questions
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Do you think that participant results from basic manipulations of C-D gain is a manipulation or reflection of Fitts’ Law?
Discussion Questions
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Do any of these interaction techniques discussed actually “beat” Fitts’ Law?
Discussion Questions
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Do you believe that Balakrishnan’s analysis of any of these new techniques would have changed if he had been including more qualitative methods?
Discussion Questions
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What interaction techniques discussed do you think would be found most and least acceptable?
Discussion Questions
![Page 25: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/25.jpg)
Do you think that we should expend energy in developing more quantitative evaluation techniques?
Discussion Questions
![Page 26: { Building Blocks Scientific foundations for Interface Design HCI Remixed “Chapter 47: A Most Fitting Law” Presented by Sarah Deighan.](https://reader036.fdocuments.us/reader036/viewer/2022070410/56649ea85503460f94babd20/html5/thumbnails/26.jpg)
Do you think that HCI as a discipline should be more concerned with “basic” work or should we focus on “applied” work?
Discussion Questions