Which two compliance techniques specifically involve reciprocity?

Question

Quizplus · Accepted Answer

Door-in-the-face and that's-not-all techniques both involve reciprocity. Door-in-the-face starts with a large request that is expected to be refused, followed by a smaller request (the actual goal), making the person feel obliged to comply. That's-not-all technique involves making an offer and then improving it before the person makes a decision, creating a sense of obligation to reciprocate the perceived extra value or concession.

Which Two Compliance Techniques Specifically Involve Reciprocity