Imagine the setup  a person is told to sit in a chair with wires attached to their skin and a button that will deliver a harmless but uncomfortable shock, and they are told to just sit there and entertain themselves with their thoughts, she said.

Imagine  a person is told to sit in a chair with wires attached to their skin and a button that will give them a harmless but uncomfortable shock, and they are told to just sit there with their thoughts, she said.
