Halo Effect

What is the Halo Effect?

The halo effect occurs when an overall impression shapes judgments of a person's or thing's particular qualities. Someone makes a good impression, and suddenly their unrelated qualities look better too. An attractive person may seem more intelligent or capable, even when you have learned nothing about their intelligence or ability.

An example of the halo effect

In Nisbett and Wilson’s experiment (1977), participants watched the same instructor behave warmly or coldly in a filmed interview. The warm version received more favorable ratings of his appearance, mannerisms, and accent. Participants did not accurately recognize how the overall impression had shaped those ratings.

The halo effect in hiring

Imagine a candidate who is charming and easy to talk to. A hiring manager might let that impression carry over into judgments of technical skill or reliability. The problem is the jump between qualities: being pleasant in an interview does not establish that someone can do the job.

Assessing each job requirement against relevant evidence gives you a better basis for a decision. A structured interview scores each answer against written anchors for that reason. It does not make you immune to first impressions.

The horn effect is the corresponding pattern in which a negative impression shapes other judgments.