Quiz - can we cahnage Certainty-Based marking grades

Quiz - can we cahnage Certainty-Based marking grades

Sudhir Singhal -
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Can we remove the negative marking/ grades in immediate feedback with CBM.
I found the following document for default values:

I want my students to choose CMB without any pressure of negative marks, to know their actual thinking about the answers, and not to detect marks if they are wrong.
Kindly guide how to change the default scoring and, if possible, the message of different scales also.

_Sudhir Singhal
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回复Sudhir Singhal

Re: Quiz - can we cahnage Certainty-Based marking grades

Sudhir Singhal -
This may be a basic question, but I cannot find the details for it.
Can anyone share some details or link for it?
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回复Sudhir Singhal

Re: Quiz - can we cahnage Certainty-Based marking grades

Sudhir Singhal -
Waiting for some reply for the above feature.
I will appreciate it if someone could share some tutorials of weblink to understand how to change the above settings.
I request if any member of the Moodle developer team can confirm whether this is possible to change it or not.
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回复Sudhir Singhal

Re: Quiz - can we cahnage Certainty-Based marking grades

Fanny Boitard -
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Hello, I have a similar request. The categories and the calculation of weightings do not conform to what education researchers seem to recommend today (see, for instance: https://sites.google.com/view/degres-de-certitude/fonctionnement/echelle-des-scores?authuser=0 ).
Is there a way to customize those categories and weights ?
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回复Fanny Boitard

Re: Quiz - can we cahnage Certainty-Based marking grades

Tim Hunt -
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The current categories and calculations were chosen by an education researcher many years ago, and are a very sensible sert of weights if you have 3 level of certanity.

Certainty-based-marking in Moodle is implemented in a plugin (that is part of the standard Moodle release). (If you want to see the code: https://github.com/moodle/moodle/tree/master/question/behaviour/deferredcbm)

The only way to customise the details of how CBM works would be to make a new similar plugin, e.g. deferredcbm5levels or whatever you want to call it.
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回复Tim Hunt

Re: Quiz - can we cahnage Certainty-Based marking grades

Marcus Green -
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Tim I am assuming that would not be a big project for an experienced Moodle developer. Do you agree.
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回复Marcus Green

Re: Quiz - can we cahnage Certainty-Based marking grades

Tim Hunt -
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Well, you need to allow time for understanding how question behaviours work, but it should not be too hard or two much work. Looking at the core plugin will give you and idea how much code it is.
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回复Tim Hunt

Re: Quiz - can we cahnage Certainty-Based marking grades

Fanny Boitard -
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OK, so maybe we will have a look at it but we have a "big moodle" where deploying a home-made plugin would probably not be agreed by the webmasters. Thank you again!
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回复Fanny Boitard

Re: Quiz - can we cahnage Certainty-Based marking grades

Marcus Green -
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If you could pay one of the Moodle Partners to do the development then it wouldn't be seen as "home made". For example anyone running any Moodle for the last 15 years or so will be running a huge amount of  core code written by the Moodle partner I work for, and probably some plugins as well.
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回复Marcus Green

Re: Quiz - can we cahnage Certainty-Based marking grades

Fanny Boitard -
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That's right ! 微笑
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回复Fanny Boitard

Re: Quiz - can we cahnage Certainty-Based marking grades

Tony Gardner-Medwin -
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I've only just seen this discussion. I would be happy to consider incorporating CBM variants or options into the Moodle code Tim Hunt and I developed for Moodle if there seemed good reason, but it would not be a trivial task. I would not go along with cutting out negative marks, because the whole point is that student marks should motivate them to be honest in reporting their confidence in an answer. Without negative marking, they would maximise their total scores by always expressing maximum confidence, right or wrong. If you want to use conventional scores for assessment (ignoring expressed confidence) then this is available as '% correct'. I don't much like the French scheme either, especially for self-tests, because though it is properly motivating like CBM, it seems too complex, especially for immediate feedback. Giving positive marks for wrong answers seems confusing. I would be pleased to discuss these issues. See: tmedwin.net/cbm , and do contact me at a.gardner-medwin@ucl.ac.uk .
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回复Tony Gardner-Medwin

Re: Quiz - can we cahnage Certainty-Based marking grades

Fanny Boitard -
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Thank you for answering!
My request follows a training we had on the subject and where the recommendations were those of the "french" research (I am in French-speaking Switzerland, there may be cultural preferences 微笑 ). A priori, like you, I would have thought that the negative weightings increased the sincerity of the students' self-assessment. But the scale proposed in the document is said to have the property of being optimal if the student is honest without using negative weightings...
We have left the project aside for this year, but we're planning :
1) to use the scale as it is, because it's already great
2) to practice developing a fork ourselves (as part of a more general strategy of learning the skill of writing plugins)
3) to pay an advanced moodler if need be.
Thanks for all the replies from this active and friendly community!
Fanny
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回复Marcus Green

Re: Quiz - can we cahnage Certainty-Based marking grades

Joseph Rézeau -
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"... an experienced Moodle developer" ... such as e.g. Marcus G.?😉

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回复Joseph Rézeau

Re: Quiz - can we cahnage Certainty-Based marking grades

Marcus Green -
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"... an experienced Moodle developer" ... such as e.g. Marcus G.?"

Yes that level of experience 微笑..

Whenever I see a thing I like that I feel like, I will just stop the current thing I am doing (An AI Marked Quiz question forked from Core Essay) and do that. And if I actually attempted that I would be like the tigers that chased their own tails until they turned into butter...
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