Professor Kalkyl

The foundational and wildly popular go-to resource for influence and persuasion—a renowned international bestseller, with over 5 million copies sold—now revised adding: new research, new insights, new examples, and online applications. In the new edition of this highly acclaimed bestseller, Robert Cialdini—New York Times bestselling author of Pre-Suasion and the seminal expert in the fields of influence and persuasion—explains the psychology of why people say yes and how to apply these insights ethically in business and everyday settings. Using memorable stories and relatable examples, Cialdini makes this crucially important subject surprisingly easy. With Cialdini as a guide, you don’t have to be a scientist to learn how to use this science. You’ll learn Cialdini’s Universal Principles of Influence, including new research and new uses so you can become an even more skilled persuader—and just as importantly, you’ll learn how to defend yourself against unethical influence attempts. You may think you know these principles, but without understanding their intricacies, you may be ceding their power to someone else. Cialdini’s Principles of Persuasion: ReciprocationCommitment and ConsistencySocial Proof Liking AuthorityScarcityUnity, the newest principle for this editionUnderstanding and applying the principles ethically is cost-free and deceptively easy. Backed by Dr. Cialdini’s 35 years of evidence-based, peer-reviewed scientific research—including a three-year field study on what leads people to change—Influence is a comprehensive guide to using these principles to move others in your direction.

#1 NEW YORK TIMES BESTSELLER * 5 MILLION COPIES SOLD “Significant...The book is both instructive and surprisingly moving.” —The New York Times Ray Dalio, one of the world’s most successful investors and entrepreneurs, shares the unconventional principles that he’s developed, refined, and used over the past forty years to create unique results in both life and business—and which any person or organization can adopt to help achieve their goals. In 1975, Ray Dalio founded an investment firm, Bridgewater Associates, out of his two-bedroom apartment in New York City. Forty years later, Bridgewater has made more money for its clients than any other hedge fund in history and grown into the fifth most important private company in the United States, according to Fortune magazine. Dalio himself has been named to Time magazine’s list of the 100 most influential people in the world. Along the way, Dalio discovered a set of unique principles that have led to Bridgewater’s exceptionally effective culture, which he describes as “an idea meritocracy that strives to achieve meaningful work and meaningful relationships through radical transparency.” It is these principles, and not anything special about Dalio—who grew up an ordinary kid in a middle-class Long Island neighborhood—that he believes are the reason behind his success. In Principles, Dalio shares what he’s learned over the course of his remarkable career. He argues that life, management, economics, and investing can all be systemized into rules and understood like machines. The book’s hundreds of practical lessons, which are built around his cornerstones of “radical truth” and “radical transparency,” include Dalio laying out the most effective ways for individuals and organizations to make decisions, approach challenges, and build strong teams. He also describes the innovative tools the firm uses to bring an idea meritocracy to life, such as creating “baseball cards” for all employees that distill their strengths and weaknesses, and employing computerized decision-making systems to make believability-weighted decisions. While the book brims with novel ideas for organizations and institutions, Principles also offers a clear, straightforward approach to decision-making that Dalio believes anyone can apply, no matter what they’re seeking to achieve. Here, from a man who has been called both “the Steve Jobs of investing” and “the philosopher king of the financial universe” (CIO magazine), is a rare opportunity to gain proven advice unlike anything you’ll find in the conventional business press.

Robert G. Hagstrom is one of the best-known authors of investment books for general audiences. Turning his extensive experience as a portfolio manager at Legg Mason Capital Management into valuable guidance for professionals and nonprofessionals alike, he is the author of six successful books on investment, including The Warren Buffett Way, a New York Times best-seller that has sold more than a million copies. In this updated second edition of Investing: The Last Liberal Art, Hagstrom explores basic and fundamental investing concepts in a range of fields outside of economics, including physics, biology, sociology, psychology, philosophy, and literature. He discusses, for instance, how the theory of evolution disrupts the notion of the efficient market and how reading strategies for literature can be gainfully applied to investing research. Building on Charlie Munger's famous "latticework of mental models" concept, Hagstrom argues that it is impossible to make good investment decisions based solely on a strong knowledge of finance theory alone. He reinforces his concepts with additional data and a new chapter on mathematics, and updates his text throughout to reflect the developments of the past decade, particularly the seismic economic upheaval of 2008. He has also added a hundred new titles to the invaluable reading list concluding the book. Praise for the first edition: "I read this book in one sitting: I could not put it down."―Peter L. Bernstein, author of Against the Gods: The Remarkable Story of Risk "Elegant and irresistible. Robert G. Hagstrom makes the complex clear as he confidently crisscrosses through the disciplines of finance, biology, physics, and literature. The only way to understand investing better, [Investing] shows, is to understand the world better. Ideas spark off the page at every turn. This is simply a gem of a book."―James Surowiecki, New Yorker "Investing is a brisk and engaging read, and it is a pleasure to be in the presence of Hagstrom's agile mind."―International Herald Tribune