The underlying premise of this paper is that the defining constraint in the
design of technology to enable people in different physical spaces to work
together is the essential corporeality of human cognition. Its empirical b
asis is a long-term field study of cooperative design in a small distribute
d company. The paper is not a descriptive account of the work practices of
the designers but instead structures the results of a field study in such a
way that they might bridge, or reduce, the gap between the description of
the work and the design of technology to support that work. The central con
clusion from the held study was that the cooperative design of a software p
roduct was enabled and achieved by the work the designers did communicating
with each other. The basic argument of this paper is that what needs to be
supported, mediated and enabled by CSCW technology used to support coopera
tive design over distance is the mutual perception, for the actor and other
s, of the embodied actions of the participants in the process,These actions
are considered as classes of cognitive practices that are simultaneously a
vailable to perceptions of the actor and others in a shared physical worksp
ace. The public availability of these actions to the perceptions of the par
ticipants in a cooperative process enables their communicative functions. A
taxonomy of embodied actions is defined that identifies and describes the
embodied actions of the designers that enabled a cooperative design process
. It is presented as a bridging structure between the field study of cooper
ative work and the design of technology that might support that work over d
istance. (C) 2000 Academic Press.