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Jan Hense  26 Aug 2004 - 07:40  Impact  Interne Validität  Textsammlung   

Original Message -------- Subject: history threats Date: Wed, 25 Aug 2004 13:57:31 -0400 From: Diana Silver Reply-To: American Evaluation Association Discussion List To: EVALTALK@BAMA.UA.EDU

I am looking for cases I can cite in which evaluators of a program, using a quasi-experimental design, have noted history threats in attempting to

 
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