Door-in-the-Face — The Big Ask Before the Real One

A reciprocity-based technique studied by Cialdini and colleagues. The door-in-the-face technique is the mirror image of foot-in-the-door. It starts with a request so large it’s almost guaranteed to be refused, then follows up with a smaller request that suddenly feels reasonable by comparison. The “real” ask was the second one all along. How It Works … Read more

Foot-in-the-Door — How Small Yeses Lead to Big Ones

Tied to Cialdini’s commitment and consistency principle. The foot-in-the-door technique starts with a tiny, easy request and gradually escalates. Once you’ve said “yes” to something small, you’re far more likely to say “yes” to something bigger — even if you’d have refused the bigger ask if it had come first. How It Works A salesperson … Read more

Unity — “We’re the Same Kind of People”

Robert Cialdini’s seventh principle of persuasion, introduced in Pre-Suasion (2016). Unity goes further than the older “Liking” principle. Liking is about feeling friendly toward someone like you. Unity is about feeling someone is you — part of the same family, region, profession, generation, or movement. Shared identity is a stronger persuader than mere similarity. How … Read more

Liking and Mirroring — Why You Buy from People Who Feel Like Friends

Robert Cialdini’s fifth principle of persuasion. Liking is Cialdini’s fifth principle of persuasion: you’re far more likely to say yes to people you like. Marketers and salespeople invest enormous effort in being likable — through similarity, flattery, attractiveness, and small social mirroring tactics — because liking translates directly into compliance. How It Works People say … Read more

Authority — Why “Doctors Recommend” Sells So Well

Robert Cialdini’s fourth principle of persuasion. Authority is one of Robert Cialdini’s six principles of persuasion: humans defer to people who appear to be experts. Marketers exploit this by surrounding products with the symbols of expertise — lab coats, titles, uniforms, official-looking certifications — even when no real expertise is involved. How It Works The … Read more

Commitment and Consistency — Why Once You Say Yes, You Keep Saying Yes

The second of Cialdini’s six original principles of influence (1984), drawing on Festinger’s cognitive dissonance theory and decades of consistency research. Once a person commits to a position — verbally, in writing, in public, or through action — they feel a strong internal pressure to remain consistent with that commitment. The pressure is psychologically uncomfortable … Read more

Social Proof and the Bandwagon Effect — Why “10,000 People Bought This” Works

Robert Cialdini’s third principle of persuasion, rooted in Solomon Asch’s conformity studies. The bandwagon effect is the same principle in motion: not just “others picked this” but “everyone is joining.” Social proof is the use of other people’s actions or opinions to convince you that a choice is correct. Star ratings, customer counts, “best-seller” badges, … Read more