"Criteria for an ethnographically adequate description of concerted activities"
by
Ray McDermott
in Semiotica 24: 245-275. 1978 p. 247:
(1) Members usually reference or in some way
formulate some of the contexts for their behavior. p. 248: (2) Members usually organize
their postures to form a configuration or positioning which signals the contexts for
behavior. p. 249: (3) Members behaviorally orient to the order in their conerted behavior
and accordingly constitute and signal their contexts for each other. p. 250: (4) Members
susually hold each other accountable for proceedings in ways consistent with the context
for their concerted activities. 
see also my introductory discussion of the concept of "positioning"
Last revision: November 25, 1997