Be. John et al., TOWARDS REAL-TIME GOMS - A MODEL OF EXPERT BEHAVIOR IN A HIGHLY INTERACTIVE TASK, Behaviour & information technology, 13(4), 1994, pp. 255-267
Citations number
23
Categorie Soggetti
Ergonomics,"Information Science & Library Science","Computer Sciences, Special Topics
We present an analysis of an expert performing a highly interactive co
mputer task. The analysis uses GOMS models, specifying the Goals, Oper
ators, Methods, and Selection rules used by the expert. Two models are
presented, one with function-level1 operators which perform high-leve
l functions in the domain, and one with keystroke-level operators whic
h describe hand movements. For a segment of behaviour in which the exp
ert accomplished about 30 functions in about 30 s, the function-level
model predicted the observed behaviour well, while the keystroke-level
model predicted only about half of the observed hand movements. These
results, including the discrepancy between the models, are discussed.