The Glow That Distorts

An attractive person walks into a room, and before they speak a single word, your brain has already decided they are probably smart, kind, trustworthy, and competent.

The halo effect was first documented by psychologist Edward Thorndike in 1920. He noticed that military officers who rated a soldier high on physical appearance also rated them higher on intelligence, leadership, and character — even though these traits are largely independent. A glow from one attribute illuminated everything else.

The halo effect is not limited to looks, though that is its most studied form. Any positive first impression — a firm handshake, a prestigious university on a resume, an expensive suit — can create a halo that colors all later judgment.