Influence book
Six principles of compliance and persuasion, with experimental evidence. Read it to recognize the techniques used on you.
Six principles of compliance and persuasion, with experimental evidence. Read it to recognize the techniques used on you.
why it matters
Cialdini wrote the book on why we say yes when we shouldn't. The six principles (reciprocity, commitment, social proof, authority, liking, scarcity) describe most of how influence actually works — in sales, in management, in design reviews. Reading it doesn't make you immune; it makes you slower to comply, which is most of the value.
key ideas
- Reciprocity: even unrequested favors create obligation; this is industrially exploited
- Commitment + consistency: once people commit publicly to a small thing, they'll commit to bigger consistent things
- Social proof: when uncertain, we copy similar others, even when they're wrong
- Authority: titles and trappings trigger deference, often when they shouldn't
- Liking: we say yes to people we like, including for arbitrary reasons (similarity, attractiveness)
- Scarcity: perceived rarity raises perceived value
memorable framings
- 'A well-known principle of human behavior says that when we ask someone to do us a favor, we will be more successful if we provide a reason.'
who should read it
Read once early. The 30th-anniversary edition is the latest.