Go on then, I'll mention it.
en.wikipedia.org/wiki/Hawthorne_effect
The trouble is it wears off.
I've seen at least two costly initiatives rolled out after an apparently successful pilot, with the outperformance reverting to the mean some time afterwards.
The early success was put down (with hindsight) to this effect in both cases, but I wasn't totally convinced. With new stuff, everything tends to get thrown at it. The best, most enthusiastic managers, extra staff, new equipment, new and novel promotional support, and training of course. Everybody knows it will mess up the analysis but they can't help themselves.
What effect or influence McDonnell has been subject to I can't imagine.
Last edited by: Manatee on Mon 23 Sep 19 at 23:07
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