How to get more of what you want. In this podcast episode, we discuss the common mistakes people make during high stakes. Webwhich persuasion tactics are most effective? How do you know if someone is starting to be swayed by your reasoning, and what else might you try to win their full. Webrobert cialdini, a renowned psychologist, identified six key principles of persuasion: Reciprocity, commitment, social proof, authority, liking, and scarcity. Hbr staff/getty images/glasshouse images. When i first began working at hbr around four years ago, one of the first articles i edited — and one of my.