Influence, New and Expanded: The Essential Guide to the Psychology of Influence and Persuasion in Everyday Life

Name: Influence, New and Expanded: The Essential Guide to the Psychology of Influence and Persuasion in Everyday Life
Price: 21.99 USD
Availability: InStock
Rating: 4.7 (7495 reviews)
Author: Robert B. Cialdini PhD

by Robert B. Cialdini PhD

Nonfiction Business

4.7 (7,495)

4.7 stars from 7,495 reviews. One of the highest rated Nonfiction books we track.

592 pages~9.9 hr readPublished by Harper BusinessPublished 2021-01-01

$21.99At peak price

Last checked: Feb 21, 2026

Must ReadHighly rated with thousands of reviews. A proven favourite.

Price history: $1.99 – $21.99

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Price range: $1.99 – $21.99

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Perfect for you if...

You work in sales, marketing, or negotiations and want to understand the mechanics behind what actually moves people to decide.
You're curious about your own decision-making and want to spot when you're being influenced (and how to do it ethically yourself).
You've noticed certain tactics work everywhere from restaurants to politics and want to know the underlying science instead of just the tricks.

Maybe not for you if...

You're looking for manipulative shortcuts to trick people into doing what you want without earning their trust.
You prefer narrative-driven storytelling over research-backed analysis and case studies.
You want a quick read. This is thorough and dense, not a breezy 100-page summary.

About this book

An examination of the psychological principles that guide human behavior and decision-making. The work explores six key principles of influence: reciprocity, commitment and consistency, social proof, authority, liking, and scarcity. Through research and real-world examples, Cialdini demonstrates how these principles operate in sales, marketing, and everyday interactions. The expanded edition includes additional material on ethical applications and modern contexts.

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Price History

Kindle price over time. Green zones = periods when the book was free.

$1.99 – $21.99

Price has dropped 12 times over the last 5 years. Goes on sale roughly every 147 days. Typically stays discounted for 3 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently #4,694 in the Kindle store — a top-10K bestseller.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.7★ from 7,495 reviews

Gaining approximately 115 new reviews per month. Reader interest is accelerating. Rating has remained stable at 4.7 over the tracking period.

Sale Prediction

Actual Predicted

Based on past patterns, a price drop could happen soon. It typically goes on sale every 147 days and the last drop was 139 days ago. Typical discount: 91% off.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.