Several of the design factors that must be considered in linking compu
ters together into networks are also relevant to the ways in which ind
ividual human memory systems are linked into group memory systems. The
se factors include directory updating (learning who knows what in the
group), information allocation (assigning memory items to group member
s), and retrieval coordination (planning how to find items in a way th
at takes advantage of who knows what). When these processes operate ef
fectively in a group, the group's transactive memory is likely to be e
ffective.