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inleiding tot chi
erik duvalK.U.Leuven
http://www.cs.kuleuven.be/~erikd 1
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http://www.slideshare.net/erik.duval
intro...
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Niet onbelangrijk…
•http://www.boston.com/campaign2000/vote/florida_voters.htm
http://www.ntk.net/nielsen2004/
http://www.demorgen.be/dm/nl/991/Multimedia/article/detail/142168/2008/01/22/Bezoekcijfers-voor-VRT-nieuwssite-deredactie-be-gaan-dieperik-in.dhtml
Voorbeelden uit jouw leven?
•bancomat van andere bank: lukt toch :-) !
• tanken, darm pomp te kort
•mappy, te ver gereden want instructies incorrectie
•eco-modus: radio afgesloten
• tanken (total): touchscreen + knopjes
•dampkap: RTFM
•kappeldreef: AVnet logo op wegwijzer
chi...
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Human-computer interaction
“a discipline concerned with the
•design,
•evaluation, and
•implementation
of interactive computing systems for human use and with the study of major phenomena surrounding them." [ACM]
technology
task
user
organisational & social
CHI
Usability
The effectiveness, efficiency, and satisfaction with which specified users achieve specified goals in particular environments
This does not mean you have to create a “dry” design or something that is only good for novices – it all depends on your goals
Human Factors
Human factors
Maar ook•BMW iDrive
•1952
•11 indicators, 16 controls
•1994
•35 indicators, 66 controls
•2002
•17 indicators, 29 controls
•“supermouse”: 700 functions
• ACM SIGCHI• meer dan 6000 leden, jaarlijkse conferentie• meer dan 2500 deelnemers
• tijdschriften• ACM interactions, bulletin, transactions• International Journal of Human-Computer
Studies • HCI bibliography
The economist – oct. 2004
http://www.economist.com/displaystory.cfm?story_id=3307363
To be truly successful, a complex technology needs to “disappear”
The real test is always the mom test
You are not the user!
(if you are the developer)
Four Myths
Only experts create good designs experts faster, simple and effective techniques anyone can apply
We can fix the user interface at the end good design is more than just user interface having right features, building those features right
Good design takes too long / costs too much simple and effective techniques can reduce total development time & cost (finds problems early on)
Good design is just cool graphics graphics part of bigger picture of what to communicate & how
If the user does something “wrong”, it is the fault of the
system designer!
“logical analysis is not a good way to predict people's behavior (nor are focus groups or surveys): observation is the key”
“I caution that the time frame for adoption of new technologies is measured in decades, not the months everyone would prefer”
Donald A. Norman
People unpredictable
feat
ure
s
reliability, convenience“no fuss or bother”
http://www.cs.berkeley.edu/~jfc/cs160/SP03/
Chrossing the chasm
Long nose of innovation
http://www.businessweek.com/innovate/content/jan2008/id2008012_297369.htm
history...
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PenO 1, les 2, 3 oktober 2007
Command Line Interface
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PenO 1, les 2, 3 oktober 2007
Nog vb?
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PenO 1, les 2, 3 oktober 2007
Grafische gebruikersinterface
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PenO 1, les 2, 3 oktober 2007
WIMP• Windows
IconsMenus, andPointing devices
• Eigenschappen
• intuitief
• consistent
• vergeven
• beschermen
• Maar niet noodzakelijk best voor expert!
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PenO 1, les 2, 3 oktober 2007
D. Engelbart, Augment
• Stanford Research Institute
• “Uitvinder” van muis, windows, groupware, ...
• team naar Xerox PARC
• nu: bootstrap institute
• http://www.bootstrap.org/
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PenO 1, les 2, 3 oktober 2007
D. Engelbart, Augment• demo at 1968 Fall
Joint Computer Conference
• video, microwave transmission, ...
• http://sloan.stanford.edu/mousesite/1968Demo.html
• http://www.youtube.com/watch?v=X4kp9Ciy1nE
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PenO 1, les 2, 3 oktober 2007
Fast forward to … now :) !
http://flash.kmi.open.ac.uk:8080/fm/fmm.php?code=c785a5-890&room=fm890
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TextText
http://hyperscope.org/
http://video.google.com/videoplay?docid=-3914718330476864051&q=doug+engelbart
PenO 1, les 2, 3 oktober 2007
XEROX PARC Star - 1981
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PenO 1, les 2, 3 oktober 200738
http://en.wikipedia.org/wiki/History_of_the_graphical_user_interface
Apple Macintosh - 1984
PenO 1, les 2, 3 oktober 2007
Windows 1.0 - 1985
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PenO 1, les 2, 3 oktober 200740
http://en.wikipedia.org/wiki/History_of_the_graphical_user_interface
Windows 3.1 - 1993
abundance:snowflake effect...
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?foodtravelcontentmedia...
abundance in music
snowflake in music...
nice bootstrapping, too!43
evaluation...
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Criteria voor evaluatie
•hoe vaak proberen om doel te bereiken
•hoe vaak mensen terugkomen
•hoe lang het duurt
•het vloekgehalte
•resultaat zelf
•of er evaluatie moet gebeuren
•dikte van gebruikers-manual
•vermoeidheid
•aantal calls op helpdesk
criteria
•Usability
•Usefulness
•Meaning
•(esthetic) Qualities
•Sociability
Criteria
•Leertijd •Tijd om taak uit te voeren •Aantal en soort fouten•Tijd dat gebruikers zich herinneren hoe taken te
volbrengen •Subjectief gevoel van voldoening bij gebruikers
Vaak compromis nodig, explicitering belangrijk!
Factoren die invloed uitoefenen
•...?
Factoren•fysisch•Antropometrie•aanpasbaar indien gebruikers te verschillend•vb. helderheid
•cognitief• kennis, inteligentie (?), geheugen, concentratie• vermoeidheid, verveling, stress, angst, leeftijd, ...
• persoonlijkheid• Myers-Briggs Type Indicator (skepsis alert!)
• Extrovert vs. introvert, denken vs. intuitie, ...• cultureel
• leesrichting, taal, etiquette, i18n
background...
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http://www.designinginteractions.com/
• Ben Shneiderman, Designing the User Interface. Strategies for Effective Human-Computer Interaction.
• Jakob Nielsen, Designing Web Usability.
• Jakob Nielsen & Marie Tahir, Homepage Usability.
• Donald A. Norman, The Invisible Computer & Emotional Design.
• Jef Raskin, The Humane Interface.
• Peter Morville, Ambient Findability.
• Jennu Preece, Yvonne Rogers, David Benyon, Simon Holland & Tom Carey, Human-Computer Interaction.
• Alan Dix, Janet Finlay, Gregory Abowd & Russell Beale, Human-Computer Interaction.
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Thanks!
Questions?http://ariadne.cs.kuleuven.ac.be/wordpress/eduval/
http://www.cs.kuleuven.be/~erikd
