Yes! 50 Scientifically Proven Ways to Be Persuasive

The Applied Science of Saying Yes

Robert Cialdini’s Influence is the theory; Yes! — co-written with behavioral scientists Noah Goldstein and Steve Martin — is the practice. Where Influence explains the six principles that drive human compliance, Yes! presents fifty specific, research-backed techniques for applying those principles in real situations: the exact wording of a request, the precise arrangement of options, the specific social proof that works in each context.

Each chapter is short — rarely more than five pages — and follows a consistent structure: a real-world problem, an experimental finding, and a practical application. The brevity is a feature: this is a reference book as much as a reading experience, organized so that you can locate the relevant technique for your specific situation without rereading the whole.

Experiments in Persuasion

The book’s most valuable quality is its evidential discipline. Every claim is backed by an actual experiment, usually a field study rather than a laboratory one — real hotels, real hospitals, real workplaces, real negotiations. The famous finding that hotel guests who are told “most guests in this room reuse their towels” comply more readily than those given an environmental appeal is here, along with dozens of equally specific and surprising results.

This specificity is important. Persuasion advice based on principle alone requires the practitioner to figure out application themselves; the experimental findings in Yes! are already applied. The finding that a fundraiser who says “even a penny would help” dramatically increases donation rates — by removing the implicit excuse that any contribution is too small — can be directly adopted.

Best Read as a Companion

Readers who have not read Influence first will find Yes! useful but somewhat rootless — the techniques are real, but without the conceptual framework of the six principles they can feel like a bag of tricks rather than a coherent system. Read after Influence, it is an excellent practical companion that extends and applies the theory with impressive evidence.

Our rating: 4.3/5 — A practical, evidence-based companion to Influence, delivering fifty research-backed persuasion techniques that can be applied immediately in professional and personal contexts.