Tell the person in both states that if he finds the coin an arbitrary dog is going to die and the subject will receive $100. Then just before the subject starts to hide the coin, show the a cute puppy to them. The subject will try to hide the coin very well, and then later, without the memory of the cute puppy, will try to find the coin. Incentives should work out, adjust the animal(child?) and dollar amount to suit the subject.
Tell the person in both states that if he finds the coin an arbitrary dog is going to die and the subject will receive $100. Then just before the subject starts to hide the coin, show the a cute puppy to them. The subject will try to hide the coin very well, and then later, without the memory of the cute puppy, will try to find the coin. Incentives should work out, adjust the animal(child?) and dollar amount to suit the subject.