When using the tool interferes with doing the task

The machine inside the machine: users' models of pocket calculators

Richard M. Young · International Journal of Man-Machine Studies · 1981 · 138 citations

Computing, Educational Technology, Human-computer Interaction +5

Getting into a system

Thomas P. Moran · 1983 · 111 citations · Full text

Computing, Computer Science, Computer Systems +10

The Nature of Device Models: The Yoked State Space Hypothesis and Some Experiments With Text Editors

Stephen A. Payne, Helen Ruth Squibb, Andrew Howes · Human-Computer Interaction · 1990 · 59 citations

Computing, Computer Science, Psychology +17