Quiz: Are you a sucker or a master? https://to.pbs.org/2QntlqB Watch more from Making Sen$e: https://bit.ly/2D8w9kc Read more economic news: https://to.pbs.org/2PNUx19 Asking for someone’s phone number in front of a flower shop will be more successful because the flowers prime us to think about romance. Small, subliminal cues change our willingness to be sold on a product, on ideas or even a date. Economics correspondent Paul Solman speaks with psychology professor Robert Cialdini about his book, “Pre-Suasion,” the crucial step before persuasion.