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I am trying to require a correct response to a free-response type question (i.e., a math problem). I understand how to skip to give "correct" feedback, but I can't figure out how to require a correct response without moving on to the next problem. Is this possible to do with free-response using the incorrect.txt function?
Take a look at the revision I've attached of [I]retention1.csv[/I] from:
[I]C:\DirectRT\Samples\6 v2006\open ended response contingencies[/I]
It's not a very efficient solution, but it does allow you to require as many re-tries as you like. In the attached revision, the subject gets two attempts to get the question correct. But you could repeat the sequence within each trial to allow for as many re-tries as you like.