If anyone (with scripting experience) is interested in adding a feature to [Double-Check] to catch reading-instead-of-meaning errors, I’d be happy to merge the changes and post an update. I would implement the changes myself if I had time.
The check for reading-instead-of-meaning (or visa versa) would go in the 'first_submit' section of the script. I think you’d just need to call the following line twice:
answer = old_answer_checker(qtype, $("#user-response").val());
And just change the qtype (i.e. question type) in between the two calls, and see if the answer comes back as correct after changing the qtype. Then add a new message to the set_answer_state() function to tell the user what happened.