Today I read an interesting story or technique that could certainly be useful to teachers. Telling a lie is easy, drawing a lie?
Psychology Today reports
The main reason drawing seems to be effective in identifying liars is that they have less time to work out the details. Someone who is telling the truth already has a visual image of where they were and what happened (even if it’s not perfect, which of course it never is), but liars have to manufacture the details. It’s easier to concoct something verbally than to first visualize and then create it on paper.
The advice is very simple, if you think that you are being lied to, stop and just have them draw it instead.