The "Door-in-the-Face" technique is a persuasion strategy where a person initially makes a large request that is expected to be rejected. After the rejection, they follow up with a smaller, more reasonable request. This method relies on the principle of reciprocity, as the second request seems more acceptable in comparison to the first. This technique is often used in negotiations and sales. For example, a charity might first ask for a large donation, knowing it will likely be turned down. Then, they ask for a smaller amount, which seems more manageable and increases the chances of getting a positive response.