The Art of Persuasion

Summary of “Influence: The Psychology of Persuasion” by Robert B. Cialdini

Unraveling the Science Behind Why People Say “Yes”

Moe Barbar
2 min readOct 11, 2023


“Influence: The Psychology of Persuasion” by Dr. Robert B. Cialdini is a foundational text that delves into the psychology behind why people comply with requests. Drawing from extensive research and real-world examples, Cialdini identifies six universal principles of persuasion. This summary provides an overview of these principles and the tactics that can both employ and combat them.


People tend to return favors. When someone does something for us, we naturally want to repay them. This principle is often used in marketing, such as when companies give out free samples, expecting that consumers will feel obliged to make a purchase in return.

Commitment and Consistency

Once people commit to something, they are more likely to go through with it to remain consistent with their earlier decision. For instance, if someone agrees to a small request, they’re more likely to comply with a larger, related request later on.

Social Proof

People look to others to determine what is correct behavior. If everyone else is doing it, it must be right. This is why advertisers often use phrases like “best-selling” or show testimonials from other customers.


People tend to obey authority figures, even if they are asked to perform objectionable acts. Symbols of authority, such as titles, clothing, and even accessories (like a car or briefcase), can increase compliance.


People are more likely to be persuaded by people they like. Factors that contribute to liking include physical attractiveness, similarity, compliments, and cooperative efforts.


Opportunities seem more valuable when they are less available. This principle is behind the effectiveness of limited-time offers or exclusive deals.


“Influence: The Psychology of Persuasion” offers a deep dive into the mechanisms that drive compliance and the tactics that can exploit or defend against them. Dr. Robert B. Cialdini’s insights are invaluable for anyone looking to understand the intricacies of persuasion, whether to enhance their persuasive abilities or to guard against manipulation.

Thank you for reading this summary. If you’re keen on mastering the art and science of persuasion or wish to be more discerning in the face of persuasive tactics, “Influence” is a must-read.



Moe Barbar

Entrepreneur, Learner, Writer, and Digital Marketer. and I read books and summarize them for you.