ABSTRACT
There is general agreement that for Ergonomics, and in particular for Cognitive Ergonomics (CE)—the concern here-‘work’ is the primary concept, expressing its scope. Ergonomics was originally derived from two Greek words: ‘ergos’ meaning work and ‘nomos’ meaning (natural) laws, and so ‘laws of work’ (Murrell, 1971). Work, domain, environment etc. reflect Ergonomics’ and so CE’s concern with work (Murrell, 1971; Card et al, 1983; Long 1987; Galer, 1989; Carroll, 1991; Pheasant, 1991; Dix et al., 1993; and Oborne, 1994). There is also agreement as to the other primary concepts of CE, for example users, technology and performance etc. (Flach, 1998; Vicente, 1998; and Long 2001). However, there is little or no agreement as to how the domain of work should be modelled for CE design and research. Two contrasting approaches can be discerned.
