Book Summary — Influence

Yannawut Kimnaruk
5 min readDec 22, 2022

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🎨 Impressions

This is a great book. It can be easily related. Many examples are given. It can be used as an influence tool directly or used to avoid being tricked by an influence tool.

📒 Summary + Notes

⚔️ Weapon of influence

  • Influencing tactics can be grouped into 6 categories: Reciprocation, Commitment and Consistency, Social Proof, Liking, Authority, and Scarcity.
  • Each category is governed by a fundamental psychological principle that directs human behavior.
  • Each tactic will try to make people say yes without thinking first.
  • Animals will have fixed-action patterns that will behave automatically and in the same order when there is a trigger feature.
  • The fixed-action patterns are necessary for us to live in a complicated environment. They work very well most of the time.
  • However, you can be tricked by using these automatic reactions.

🎁 Reciprocation

Give and Take…and Take

  • The rule of reciprocation is “we should repay what another person has provided us.”.
  • The chance that people will do what we wish will greatly increase when we provide them with a small favor prior to the request.
  • The favor can be small and even unwanted. It still has an effect.
  • We usually give back more than we have received due to internal discomfort and the possibility of external shame.
  • More subtle way, we make a concession to someone who has made a concession to us.
  • The rejection-then-retreat technique: First, you make a large request that is likely to be rejected. Then, after being refused, make the smaller request that you are really interested in all along.
  • The victim of the rejection-then-retreat technique will likely agree to further requests as well.
  • The reasons why the rejection-then-retreat technique is powerful: perceptual contrast, responsibility for concession, and satisfaction with the final agreement.
  • Examples: free sample marketing, Trying to sell an expensive product first and trying to sell a cheaper product later.
  • How to avoid this technic?
    Try to identify whether the request is a compliance device or a favor. If we know that it is just a compliance device, the reciprocation rule will have no effect.

⏩ Commitment and Consistency

Do as we used to commit

  • We are nearly obsessed to be consistent with what we have already done due to social norms.
  • After we made a choice, we will encounter personal and interpersonal pressure to behave consistently with that commitment.
  • The influence technic using consistency has a concept like this If I can get you to make a commitment, you will tend to behave in ways that are consistent with that commitment even if that action is not well-considered.
  • The “How are you feeling” technique is asking “How are you?” and after you say that you are fine, they will ask you a favor that you may find awkward to refuse.
  • The foot-in-the-door technique starts with a little request in order to gain eventual compliance with related larger requests.
  • When you set a goal and write it down or record it, it will feel like you make a commitment and you will likely follow that goal. The effect will be even greater if you publicize it.
  • Persons who go through a greater deal of trouble or pain to attain something tend to value it more highly.
  • Commitments will be effective in changing behavior when they are active, public, effortful, and chosen without outside pressure.
  • How to avoid this technic?
    We have to realize when such consistency is likely to lead to a poor choice. The signal is when we realize we are trapped in complying with a request we don’t want to perform.

👨‍👩‍👧‍👦 Social Proof

The truths are what most people think

  • We may determine what is correct by finding out what other people think is correct.
  • Social proof is powerful in an uncertain situation and when we are observing the behavior of people just like us.
  • A successful way to sell a product to ordinary customers is to demonstrate that other ordinary people use and like it.
  • Pluralistic ignorance is an event that an entire group of people does nothing under unexpected circumstances because they see other people do nothing. Its effect is the strongest among strangers.
  • Examples: canned laughter, putting money in a tip jar, Werther effect
  • How to avoid this technic?
    Recognize when the data are in error. We need to make a conscious decision to be alert to counterfeit social evidence.

❤️ Liking

Like, so say yes

  • We tend to say yes to someone we know and like.
  • Just mentioning the friend’s name is enough.
  • This technic can be used by first getting us to like them.
  • The factors that can make you “like” someone: physical attractiveness, similarity, compliment, contact and cooperation, and association with a positive thing/person.
  • A halo effect occurs when one positive characteristic of a person dominates the way that person is viewed by others. “good-looking equals good”
  • Praise doesn’t have to be accurate to make people like it.
  • People tend to dislike a person who brings us unpleasant information, even when that person didn’t cause the bad news.
  • The luncheon technique tells that people tend to like the people or things they experienced while they are eating.
  • How to avoid this technic?
    React protectively when we feel that we like a person more than we should under the circumstances. Separating the requester and the request.

👑 Authority

Obey the authority person

  • People usually obey people with high authority.
  • A multilayered authority allows the development of a sophisticated social structure.
  • We are trained from birth that obedience to proper authority is right and disobedience is wrong.
  • The authority can make people ignore other reasons.
  • We are often as vulnerable to the symbol of authority as to the substance.
  • The symbols of authority: title, clothes
  • People underestimate the effect of authority influence.
  • How to avoid this technic?
    Heighten awareness of authority power. Ask yourself 2 questions: “Is this authority truly an expert?” and “How truthful can we expect the expert to be here?”

💧 Scarcity

It is rare, so it is valuable

  • Things seem more valuable when their availability is limited.
  • People seem to be more motivated by the thought of losing something than by getting something of equal value.
  • People hate to lose the freedom they already have.
  • The “limited-number” tactic: Inform customers that a certain product is in short supply that cannot be guaranteed to last long.
  • The “deadline” tactic: Customers have limited time to accept the offer.
  • We tend to believe in information more when that information is limited in time or place.
  • We value more those things that have recently become less available to us than those things that have always been scarce.
  • How to avoid this technic?
    Flag the experience of heightening arousal in a scarcity situation and think more carefully. We need to recall that scarce cookies don’t taste any better.

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Yannawut Kimnaruk
Yannawut Kimnaruk

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