EDIT:
The key is to focus on what the experimental subjects observe, not the rules the experimenters intend to follow. The kid is promised another marshmallow, he doesn’t know that he is going to get one, and he doesn’t know that the one he has now won’t be taken away. With priors associated with abuse, the kid should eat the marshmallow as soon as possible.
I’m not so trusting, and it occurred to me.
EDIT: The key is to focus on what the experimental subjects observe, not the rules the experimenters intend to follow. The kid is promised another marshmallow, he doesn’t know that he is going to get one, and he doesn’t know that the one he has now won’t be taken away. With priors associated with abuse, the kid should eat the marshmallow as soon as possible.