Social Proof

Other people’s behaviour can guide a choice.

01 / UNDERSTAND

The idea

When uncertain, people may look to others for evidence of what is useful or appropriate. Relevant, credible examples are more helpful than impressive but unrelated popularity claims.

Reviews, customer logos, activity counts, trusted experts and friends can all influence how someone evaluates a product. Specific, relevant evidence helps people judge whether it applies to them. Anonymous popularity and a recommendation from a known peer carry different meanings. Every testimonial, count and relationship should be genuine.

02 / RECOGNISE

See it in real products.

Examples of how the principle can appear in an interface.

MediumEXAMPLE 01

Match the evidence to the reader’s context

Medium adapts membership evidence around the article and relevant professional identities. The example makes the proof more specific than a generic popularity total.

Medium · Interface example
SnapchatEXAMPLE 02

Show a relevant social connection

Snapchat’s signup example refers to activity among a user’s contacts. Personal relevance can make a network’s value tangible, but contact access still needs appropriate permission.

Snapchat · Interface example
Review contributionEXAMPLE 03

Show contributors that their work matters

A review-view notification illustrates how evidence of an audience can give people a reason to contribute again.

Example source

03 / CONNECT

Why it matters.

Relevant evidence from peers can influence trust, perceived value and referrals. Popularity alone does not establish that a product is suitable for the individual.

Possible influences to investigate, rather than guaranteed outcomes for every product.

04 / APPLY

Put it into practice.

  1. 01

    Use authentic examples

  2. 02

    Match evidence to the audience and claim

  3. 03

    Show context and limitations

05 / EXPLORE WITH UPSLIDE

Apply it with Upslide.

Use a practical guide, read a deeper explanation.

Keep exploring

70 PRINCIPLES TO EXPLORE

The UX glossary

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THE UX GLOSSARY

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Reviewed by the Upslide team.