A version of GOMS developed by John in the 1980s that explicitly joined GOMS to the model human processor. It included perceptual and motor operators as well as cognitive operators. Perceptual, cognitive, and motor operators could run in parallel, subject to resource and information dependencies. More information can be found in Gray, John, & Atwood, 1993; John 1988, 1990; John & Gray, 1992, 1994, 1995.
The path through subtasks (operators) in a PERT chart that determines the length of the total task. Used in CPM-GOMS.
See computer-supported cooperative work.