Incentive-Caused Bias

Definition

Incentives don't just change what people choose to do — they change what people are able to see. Munger: "You must have the confidence to override people with more credentials than you whose cognition is impaired by incentive-caused bias." The bias is genuine and often unconscious: the person isn't lying, their judgment is warped by what they're paid to conclude.

In the Book

Chapter 80, "Incentives," gives the book's clearest mechanism story: Federal Express couldn't get its night sorting hub to run on time despite "moral suasion, threats, you name it," until management stopped paying workers by the hour and started paying by the shift — with the reward being that workers could go home once the job was done. The compensation structure, not exhortation, fixed the problem overnight. Chapter 116, "Incentive-Caused Bias," gives the inverse case: a CEO couldn't understand why his newer, cheaper, better-designed product wasn't outselling the older model, until he discovered the sales commission was higher on the old one — his own sales force was unconsciously steering customers away from the better product. The book generalizes this to any salesperson — "a surgical center peddling a surgery, a tire company selling tires, a real estate company selling houses" — recommending skepticism and, when the bias is visible but you lack the expertise to correct for it yourself, a second or third outside opinion.

Why It Matters

This concept explains why "just find honest, competent people" is an insufficient fix for a broken system — competence and honesty don't neutralize a misaligned reward structure, because the distortion happens upstream of conscious intent. It gives a diagnostic question usable in any domain: before trusting an expert's or an employee's judgment, ask what they are actually being paid to conclude, and redesign the compensation before trying to redesign the behavior.