Personal Information

Born 1945
Nationality American

Professional Background

Published Books 1 books

Biography

Robert B. Cialdini is an American social psychologist and author, widely recognized as a leading expert in the fields of persuasion, compliance, and negotiation. He is often referred to as the "Godfather of Influence" due to his extensive research into why people say "yes" to requests and how these findings can be ethically applied.

Robert B. Cialdini: The Authority on Influence

Robert B. Cialdini is a distinguished social psychologist and author, renowned globally for his groundbreaking research on the science of persuasion. His seminal work, Influence: The Psychology of Persuasion, has become a cornerstone for understanding human behavior and compliance.

The Genesis of Influence

Cialdini’s interest in influence stemmed from a desire to understand why people say “yes”. He spent three years undercover, immersing himself in various professions that rely heavily on compliance—including car sales, fundraising organizations, and telemarketing firms. This immersive research allowed him to observe and categorize the most effective persuasion tactics in real-world settings.

The Six (and now Seven) Principles of Influence

His research culminated in the identification of six universal principles of influence, which he later expanded to seven:

  1. Reciprocity (การตอบแทน): The obligation to give back when you receive.
  2. Commitment and Consistency (ความมุ่งมั่นและความสม่ำเสมอ): The desire to be consistent with what we have already said or done.
  3. Social Proof (หลักฐานทางสังคม): The tendency to follow the lead of similar others.
  4. Liking (ความชอบ): The inclination to say “yes” to people we know and like.
  5. Authority (อำนาจ): The tendency to obey credible experts.
  6. Scarcity (ความขาดแคลน): The desire for things that are limited in availability.
  7. Unity (ความเป็นหนึ่งเดียว): (Added in later editions) The tendency to be influenced by those with whom we share a sense of identity or belonging.

Ethical Application and Defense

Cialdini emphasizes that these principles are powerful tools that can be used ethically to build genuine relationships and achieve mutually beneficial outcomes. Crucially, he also provides strategies for how individuals can recognize and resist manipulative or unethical influence attempts, empowering them to make informed decisions.

Impact and Legacy

Cialdini’s work has had a profound impact across various fields, including marketing, sales, negotiation, and leadership. His books have sold millions of copies worldwide and are widely used in academic and professional settings. He is a sought-after speaker and consultant, helping organizations apply the science of persuasion to improve their communication and effectiveness.

Conclusion

Robert Cialdini’s contributions have demystified the art of persuasion, transforming it into a science. His principles provide a clear framework for understanding human behavior and offer practical guidance for anyone seeking to influence others ethically and effectively, while also protecting themselves from unwanted influence. His legacy is one of empowering individuals with knowledge about the subtle yet powerful forces that shape our decisions.

Books by Robert B. Cialdini

Featured

Influence, New and Expanded: The Psychology of Persuasion

Published 2025

The classic book on persuasion, explains the psychology of why people say yes—and how to apply these understandings.

ISBN: 9780063136822