Biases › Social
Social
Authority
We lean on experts and badges when we can't judge for ourselves.
We defer to signals of expertise or official endorsement.
Milgram (1963), Behavioral study of obedience.
What is Authority?
Authority is a behavioural bias (social family): we defer to signals of expertise or official endorsement. Cues of expertise (a 'Recommended' badge from the seller, an expert, a credential) lower the effort of deciding: someone who knows more has already chosen. Nudgeswipe rates the evidence as strong. Source: Milgram (1963), Behavioral study of obedience.
The original study
Milgram (1963), Behavioral study of obedience.
- Method
- Lab study at Yale: 40 men were told to give increasing "electric shocks" to a learner (an actor) when instructed by an experimenter.
- What it found
- 26 of the 40 (65%) continued to the maximum 450-volt level.
Replications and critiques
The research
Cues of expertise (a 'Recommended' badge from the seller, an expert, a credential) lower the effort of deciding: someone who knows more has already chosen. The classic evidence comes from obedience studies; marketing uses mild versions.
● Strong evidence
Source: doi.org/10.1037/h0040525
Key takeaways
- Honest nudge
Recommend the option that genuinely fits most buyers, and explain why.
Example: The Guardian asks readers to give back for journalism they already read free → - Dark-pattern line
Badging the most expensive plan regardless of fit.
Grey-area example: ZOE leads with first-name member quotes and "world-leading science" →
Use it
Apply this with your agent
The prompt carries this bias, its evidence rating and the honest-vs-dark line.
ChatGPT, Claude, Grok and Cursor open with the prompt filled in (it is also copied, in case the prefill doesn't load). Gemini and Codex don't support prefilled links, so the prompt is copied and the app opens; paste it in.
Frequently asked questions
What is Authority?
Authority is a behavioural bias: we defer to signals of expertise or official endorsement.
How does Authority work?
Cues of expertise (a 'Recommended' badge from the seller, an expert, a credential) lower the effort of deciding: someone who knows more has already chosen. The classic evidence comes from obedience studies; marketing uses mild versions.
How strong is the evidence for Authority?
Nudgeswipe rates it strong evidence. Original source: Milgram (1963), Behavioral study of obedience.
How can you use Authority honestly?
Recommend the option that genuinely fits most buyers, and explain why.
When does Authority become a dark pattern?
Badging the most expensive plan regardless of fit.
Which brands use Authority?
Nudgeswipe has 19 teardowns of brands using it, including Notion, The Guardian, Octopus Energy, Duolingo, Dropbox. Whether it lifted their results is not public unless a teardown cites it.
In the wild
19 real examples
Notion labels one plan "Recommended" and leads with logos
Notion · Pricing · $ as captured
The Guardian asks readers to give back for journalism they already read free
The Guardian · Pricing · £ as captured
Octopus leads with Which? and 891,063 reviews
Octopus Energy · Homepage
Duolingo puts one giant "Get started" in front of everything
Duolingo · Homepage
Notion lets named founders and leaders make its case
Notion · Homepage
Dropbox badges its team plan "Best value" and defaults to yearly billing
Dropbox · Pricing page · $ as captured
GitHub opens its pricing page with a "risk-free" 30-day trial
GitHub · Pricing page
GitHub Copilot labels its $100 Max plan "BEST VALUE" by multiples of Pro credits
GitHub Copilot · Pricing page · $ as captured
Wise sells against hidden exchange-rate markups with "the mid-market rate"
Wise · Pricing page
Chip leads with app-store ratings and the FSCS protection limit
Chip · Homepage · £ as captured
Klarna leads with "120m users" and a Trustpilot score
Klarna · Homepage
Noom asks "See if you qualify" rather than "Buy"
Noom · Homepage
ZOE leads with first-name member quotes and "world-leading science"
ZOE · Homepage
Jet2holidays leads with a "£60pp deposit" and lists what is included
Jet2holidays · Homepage · £ as captured
EE prints each future price rise in pounds and pence under the headline monthly price
EE · Homepage · £ as captured
Suno's free plan is a list of "No…" lines; Pro is "MOST POPULAR", Premier "BEST VALUE"
Suno · Pricing page · $ as captured
Zopa lines up "14 times winner at the British Bank Awards" above its app features
Zopa · Homepage
Freetrade repeats "FREE" three times and leans on FCA and IG Group
Freetrade · Homepage
Anything we can help you with?
Evelyn & Bobbie sends the abandoned cart from a named fit expert
Evelyn & Bobbie · Email
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