Leslie,

The only article that comes into my mind is

American Psychological Society, "Do science museum exhibits really teach?",
Observer 4/6, 1991: 1, 22-23.

Even if it is not the one you are looking for I think it's worth reading.

Fritz
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Dr. Friedrich Waidacher
Klosterwiesgasse 44, A-8010 Graz, Austria, Tel/Fax +43/316/826264
Moenchegg 34, A-8742 St. Wolfgang-Kienberg, Austria, Tel/Fax +43/3578/8216
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http://www.WebMuseen.de/Waidacher/
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