Manipulation tricks

Manipulation isn't a good way to accomplish a goal . But you can use it for good purpose and to detect the manipulators

Reciprocity

We have helped or asked for favor to people we know . When they did that favor . We will feel that we have to repay him somehow . That's how we use this technique. We you do them a favor  asked them this  " Oh! Wouldn't you do the same for me or help me when needed ?" After that they will have a deep rooted feeling to help you in situations.

Scarcity 

When something is scare it is valued . Like "limited time or edition " etc.. we can use this as a trick to position to ourselves to other that this is scare or rare . They will ten to act with greater sense and take immediate action .

Commitment and Consistency

Get people to do what you want them to do by getting them to commit. It is easy to do this trick make a public declaration of them doing the thing for you and have their word. Once they give their word in front of other people they tend to do that no matter what happens. Because people don't like going back on their words or seen as someone who doesn't live up to their commitments.