Recent evidence indicates
that memory representations for large spaces are viewpoint dependent
when observers are restricted to a single view. The purpose of
the present study was to determine whether two views of a space
would provide a single viewpoint-independent representation or
two viewpoint-dependent representations. Participants learned
the locations of objects in a room from two viewpoints, and then
made judgments of relative direction from imagined headings either
aligned or misaligned with the studied views. The results indicated
that mental representations of room sized spaces were viewpoint-dependent,
and that two views of a spatial layout produced two viewpoint-dependent
representations in memory. Imagined headings aligned with the
study views were more accessible than novel headings, and the
difficulty of retrieving a novel heading was a linear function
of the angular distance to the nearest study view.