Are student evaluations worth the paper they are written on?

English: Widely regarded as an authoritative source on sound academic practice, the AAUP's Policy Documents and Reports, also known as the Redbook, contains the Association's major policy statements. (Photo credit: Wikipedia)

AAUP-sponsored study seems to say yes.
http://www.aaup.org/article/changing-practices-faculty-evaluation#.U3t1tLMU9Yc

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