The OU Multi-response question type

This is a multiple-choice, multiple-response question type that was created by Mahmound Kassaei and Tim Hunt at the Open University (http://www.open.ac.uk/).

This version of this question type is compatible with Moodle 2.5+. There are other versions available for Moodle 2.1+.

To install using git, type these commands in the root of your Moodle install

git clone git://github.com/moodleou/moodle-qtype_oumultiresponse.git question/type/oumultiresponse
echo '/question/type/oumultiresponse/' >> .git/info/exclude

Alternatively, download the zip from https://github.com/moodleou/moodle-qtype_oumultiresponse/zipball/master (Moodle 2.5 or later) unzip it into the question/type folder, and then rename the new folder to oumultiresponse.

The main difference from the standard Moodle multiple choice question type is in the way that grading works. When creating the question, the teacher just indicates which choices are correct. If there are n correct choices, then the student scores 1/n for each correct choice, and loses 1/n for each incorrect choice. So for example, suppose the question is:

Which of these animals are mammals?
    A. Dog
    B. Frog
    C. Toad
    D. Cat
    E. Cow
    F. Newt
    G. Lion

Then ADEG (4 right out of 4) scores 100%. D (1 right) scores 25%. ADEGF (4 right, 1 wrong) scores 75%. ADEBC (3 right, 2 wrong) scores 25%. In interactive mode, the student is given more credit for choices that are selected correctly on the first try, even if it takes more tries to get some of the other choices correct.