Cognitive biases & decision-making · law 072
Halo Effect
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
what it means
One positive trait — like looks, fame, or a single success — makes people judge everything else about a person or brand more favourably.
How Halo Effect works
A strong first impression spreads to unrelated judgements. A well-dressed candidate seems more competent; a profitable company's strategy seems brilliant; a beautiful product seems reliable.
Brands benefit from halos, but leaders and investors must be careful not to let them cloud judgement.
where it comes from
Psychologist Edward Thorndike named it in 1920 after finding military officers rated soldiers' traits in suspiciously consistent ways. Phil Rosenzweig's 2007 book The Halo Effect showed how it distorts business analysis.
Halo Effect examples in business
Brands
A trusted brand launches a new category and customers assume it is good quality.
Hiring
A candidate from a famous college is assumed to be strong across all skills.
Business press
When a company is doing well, its culture and CEO are praised; when it struggles, the same traits are blamed.
How to apply it
- 1Build a strong positive first impression for your brand.
- 2When judging people, rate each trait separately with evidence.
- 3Use structured interviews and scorecards.
- 4Look past a company's results when studying its strategy.
common misreading
The halo can be negative too (the ‘horns effect’) — one flaw can colour everything.
ask yourself
Where might a first impression be distorting how you judge someone on your team?
put it into practice
Frequently asked questions
What is Halo Effect?
One positive trait — like looks, fame, or a single success — makes people judge everything else about a person or brand more favourably. A strong first impression spreads to unrelated judgements. A well-dressed candidate seems more competent; a profitable company's strategy seems brilliant; a beautiful product seems reliable.
Who came up with Halo Effect?
Psychologist Edward Thorndike named it in 1920 after finding military officers rated soldiers' traits in suspiciously consistent ways. Phil Rosenzweig's 2007 book The Halo Effect showed how it distorts business analysis.
How do you apply Halo Effect in business?
1. Build a strong positive first impression for your brand. 2. When judging people, rate each trait separately with evidence. 3. Use structured interviews and scorecards. 4. Look past a company's results when studying its strategy.
What is a common misunderstanding of Halo Effect?
The halo can be negative too (the ‘horns effect’) — one flaw can colour everything.