Models of Interaction What are They? . I. Scott MacKenzie. What is a Model?. A model is… a simplification of reality A model is… useful only if it helps in designing, evaluating, or otherwise providing a basis for understanding the behaviour of a complex artifact such as a computer system
I. Scott MacKenzie
between variablesA Model of Models 1
1 First attempt. Can you think of a way to improve this model?
While these empirical results are of direct use in selecting an Interaction technique,1 it would obviously be of greater benefit if a theoretical account of the results could be made. For one thing, the need for some experiments might be obviated; for another, ways of improving interaction1 might be suggested.
Card, English, and Burr (1978, p. 608)
1 Edited to recast in general termsCard, Moran, and Newell (1978)
A pretty picture might help (next slide)
Thank you Microsoft (next slide)
ORKey-Action Model (KAM)
The desktop interface is biased for left-handed users!