I have received an email from Mike asking about selfishness within WebPA. Can anyone help to answer his question (see the email text below)
Thanks
Nic
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Nicola Wilkinson
eLearning Systems Developer
WebPA Project, engCETL
Web: http://webpaproject.lboro.ac.uk/
JISCmail: http://www.jiscmail.ac.uk/lists/webpa.html
Project Blog: http://webpa-tec.blogspot.com/
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Hi there.
I'm very interested in the WebPA system but I have been looking over the
documentation and I can't see any way of preventing students from selfishly
manipulating marks to boost there own scores. Is there a mechanism that you
haven't explained in the demonstrations, or is the only solution to prevent
students from assessing themselves (something I don't want to do)?
What I mean is, say a report for a 4-person group got 80%, and I had
decided to use a 40% PA weighting. Therefore, each student effectively
controls a 10% stake of their 80% mark. What is to prevent one of them from
marking themselves 5/5 on every criterion and their peers 1/5? Assuming the
other scores were completely even, this would give them a webPA score of
1.375. 1.375 x 40% = 55%, giving a total score for the selfish student of
95% and scores for the others of 0.875 x 40% + 40% = 75%. Essentially, the
selfish student has taken 5% from each of the others. Is there a flag to
alert the assessor of this? In this example it would be fairly obvious, but
I imagine that when the other numbers vary it would be easy to miss that.
Thanks,
Mike
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