1. Help advance someone's goals to get them to do you a favor." It's a bit calculating, but it's right out of Zig Ziglar: “You will get all you want in life, if you help enough other people get what they want.”
2. "Tweak the environment to get people to act less selfishly." Asking favors in a social setting rather than a business setting makes people more inclined to act like a friend than a business rival.
3. "Use a decoy option to get people to buy your product." Trying to get people to buy a more expensive version of your product? Introduce a third option—one that's the same price, but less effective.
4. "Focus on what your bargaining partner is gaining, not losing." Sounds fair, but if you're hiding that you're offering someone a bad deal, I hope you're doing something else to balance out your karma.
5. "Mimic people's body language to get them to like you." Research suggests if copy their body language, others are more likely to identify with you subconsciously. And that makes them more likely to do what you want.
6. "Display an image of eyes to get people to behave ethically." When we see eyes, we feel like we're being watched, and we feel whatever we do will be observed and judged.
7. Appealing to Insecurities."Use nouns instead of verbs to get people to change their behavior." People think about their self-identities when they hear nouns. When they hear verbs, they think of behavior. Nouns win.
8. Speak quickly to get an argument opponent to agree with you." Overwhelm people your speed, and wear them down. They'll sometimes agree because they can't process what you're saying—and they don't want to admit it.
9. Ask people for favors when they're tired to get them to cooperate." Similar to a few other ideas on the list, when people are worn down they're more likely to agree. Car dealers use this tactic—it's why it's so hard to simply show up and get a quote.
10. Scare people to get them to give you what you need." This is the core of most advertising—make people fear something, and then sell them the antidote. That doesn't make it less evil. It is however, quite effective.
11."Confuse people to get them to comply with your request." People don't want to admit they don't understand things, so they agree. The example given is to describe the price of something in pennies, rather than dollars, since it takes longer to process.
I think that 1, 2, 5, 7, 8, 10 are the most effective techniques. What do you think?