I showed you a video not long ago about an experiment using marshmallows to test deferred gratification in children. E.T. (Expressionable Thought) then sent me a link to the blog 'Mind Ova Matter' where there is a video of the same test being carried out elsewhere. It's so cute I had to share it with you.
The concept is that a child is left in a room with a marshmallow for 20 minutes with the promise that if they don't eat it, they will be brought another marshmallow after that time. You can imagine how that would be tough for a child, although there is plenty of comedy value in watching it.