Which pair of social influence techniques are both based on the principle of reciprocation?

Question

Quizplus · Accepted Answer

Both the door-in-the-face and that's not all techniques rely on the principle of reciprocity. The door-in-the-face technique involves making a large request that the person is likely to refuse, but then following it up with a smaller request that they are more likely to comply with. This works because the person feels obligated to reciprocate after the first request. Similarly, the that's not all technique involves offering an initial price or offer, but then sweetening the deal by adding additional benefits or discounts. This also creates a sense of obligation to reciprocate and accept the offer.

Which Pair of Social Influence Techniques Are Both Based on the Principle