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Influence book cover

Cover: Open Library

ThinkingIntermediate

Influence

by Robert B. Cialdini

★★★★★ 5/5 · Poornadnyan rating

The big idea

A handful of psychological principles – like reciprocity, social proof, authority and scarcity – quietly drive most of our "yes" decisions.

Read it if…

Marketers, sales people, founders – and every consumer who wants to resist manipulation.

Skip it if…

You only want quick tips; the book explains the research in detail.

Key ideas in 2 minutes

  1. Reciprocity: we feel we must return favours, even small unasked ones.
  2. Scarcity: "only 2 left" makes us want something more.
  3. Knowing these principles helps you use them ethically and spot when they are used on you.

Our review

After reading this, you will never look at a sale, an ad or a "limited offer" the same way. It is a marketing classic because it explains why things work, not just what to do.

Essential for anyone who sells anything – including ideas.

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