Idea for Duolingo
I was thinking it would be a good idea to have a lesson type called "Find the mistake", where it would list the most common mistake(s) taken from the user base, for questions from lessons.
The general idea is that the learner has to correct the mistake, e.g give them a question such as "Ich heißen Tom", and they have to put in the correct version.
I reckon this could be pretty useful, especially since I make mistakes quite a lot ;)
Perhaps, but I reckon it should be built around common mistakes made in the Duolingo community - so early on it would ask for things based on their skill level. Although like you said it might be a bit complicated for new learners, so it could be made into a separate function, or even optional.
Yeah, I think they can be used in evaluation exercises, but not learning exercises.
Multiple exposures could lead to the brain mistaking them for knowledge.
Not exactly the same, but similar...