[Edu-sig] looking for references

[Laura Creighton]

In a message of Sat, 26 Jul 2008 10:11:39 CDT, "Daniel Ajoy" writes:
>> 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
>
>
>Daniel

Thank you!

Laura