[Edu-sig] looking for references

Daniel Ajoy da.ajoy at gmail.com
Sat Jul 26 17:11:39 CEST 2008

> I am looking for a study I used to know which demonstrated that
> the introduction of a grading scheme had a damaging effect on the
> ability of educators to actually teach students.  Anybody got
> some references lying around?
> Laura

Punished by rewards


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