Tomorrow, Janice will be attending a party with a buffet. In anticipation of splurging on delicious food, she is eating very little today. Janice is using a ________ to help her estimate consumption over time and regulate her behavior.
A hot and thirsty customer buys a cool drink and finds it very satisfying. He then buys another drink even though he had not initially planned on buying two and even though he is no longer thirsty. This is an example of ________.