inleiding tot chi

erik duvalK.U.Leuven

http://www.cs.kuleuven.be/~erikd 1

2

Waarom koos je dit vak?

• interactief

• aangeraden

• UI belangrijk

• weet niet meer

• zelf gebruiken en toepassing

• praktisch vak

• nuttig

• later mee te maken

Waarom koos je dit vak?

• vorig jaar: interessant

• iets anders

• ik weet er niet veel van

• MMI

• MOP, PENO: GUI - of juist niet

• nuttig

• nog niet aan bod gekomen

• belangrijk: moet er mee kunnen werken

• het geheim van de goede GUI

• kan je echt gebruiken

Bad day…

http://www.web42.com/badday/

Doelstelling• Begrijpen

• trade-off factoren

• Diversiteit gebruikers en taken

• Beperkingen van methodes

• Bijdragen verschillende disciplines

• Kunnen

• Ontwerpen, “implementeren” en evalueren

There is a conflict of interest in the world of software development because the people who build it are also the people who design it.If carpenters designed houses, they would certainly be easier or more interesting to build, but not necessarily better to live in. The architect, besides being trained in the art of what works and what doesn't, is an advocate for the client, for the user.

Alan Cooper. About Face, 1995(http://www.chesco.com/~cmarion/Design/UIDesign.html)

Niet onbelangrijk…

•http://www.boston.com/campaign2000/vote/florida_voters.htm

http://www.ntk.net/nielsen2004/

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.

GUI - probleem uit jouw leven?

• 7: word auto-opmaak moeilijk weg te krijgen

• 12: vlc media player versies (macos-xp)

• 5: vista, te veel kaders rond tekst

• 9: kul web site - sport info

• 3: dvd recorder taalfout (ja<>neen)

• 4: visual paradigm - lifeline in lus via menu

• 1: evolution email - wissen zoekveld of email boodschap?

• 11: toledo - onoverzichtelijk wanneer iets toegevoegd is

• 2: startmenu vista: lange scrollvensters

• 6=9

• 8: deredactie.be te druk

• 10: outlook versus express - accounts instellen (ook: eclips)

GUI - probleem uit jouw leven?

• apotheker-site: registratie -> telefoon

• uurrooster onbeschikbaar -> back-up lijst

• lessenrooster vinden -> kuleuven googlen

• PC-lab -> numlock standaard af

• ADSL helpdesk -> laat iemand terugbellen die er iets van kent

• download uit mail -> beveiligde map, overschrijving

• delijn.be

• toledo -> assignment indienen

• laserprinter -> r0x32 boodschap

• SMIL -> “error”

Human-computer interaction

“a discipline concerned with the design evaluation and implementationof interactive computing systems for human use and with the study of major phenomena surrounding them." [ACM]

technology

task

user

organisational & social

CHI

Human Factors

Human factors

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

Dank!

Vragen?http://www.cs.kuleuven.ac.be/~erikd