Describe two different techniques for gaining compliance that rest on Cialdini's

1) The foot-in-the-door technique: make a small request. Once compliance is gained, make a larger request (the one that was originally desired). This works because refusal of the larger request is inconsistent with granting the initial request.
2) The lowball procedure: offer a very advantageous deal to someone. Once they have accepted, change the terms so that they are less advantageous. The initial commitment makes it more difficult to refuse the modified deal because subsequent refusal would be inconsistent with the initial acceptance.