One of the best ways to get someone to like you is to ask them to do a favor for you. In one study conducted in both the U.S. and Japan, people who thought they were working on a joint project ended up reporting liking someone more when that person asked for their help with the task. This is called the Benjamin Franklin effect. The phenomenon is named for the way the founding father used this tactic to appeal to a political rival, by asking the man to lend him a book from his library.
