I reported viewing time measures
and overall usage in exhibitions at a number of museums
conducted by a number of different investigators.
Visitors spent less than 20 minutes in 82% of
the 110 total exhibitions included in the study. Many
of these exhibitions were large, which didn’t seem to
make a lot of difference. The median stops in these
exhibitions was 33.9% of the total possible exhibit
elements. These findings can be easily interpreted
as support for the limited capacity of attention.