The fact that knowledge-based systems (KBS) may have considerable impact wh
en introduced into an organisation is beyond dispute. The assessments of th
is impact in the literature, however, are not satisfactory. They overlook t
he main discriminating characteristic of KBS, i.e. the fact that KBS claim
to store and handle knowledge. The article explores ways for bringing 'know
ledge' into discussions of the impact of KBS. A knowledge perspective is de
veloped which does justice to the impact of KBS on both articulated and tac
it knowledge at the strategic, tactical and operational level. Possible app
lications of this perspective are explored with illustrations from an empir
ical investigation of KBS in 17 organisations. (C) 1999 Elsevier Science B.
V. All rights reserved.