Landing Page: Social Proof at Checkout Increases Orders; Social Proof at Top of Funnel Hurts
Hypothesis
Social proof (testimonials and community size statements) would increase conversions at both top-of-funnel and bottom-of-funnel touchpoints
Test Results
Key Learning
Context: Users on the landing page need validation from others before committing — without visible proof of success, they hesitate.
What was tested: Social proof is not universally positive. At top of funnel (email capture), it can backfire — possibly suggesting elitism or reducing the accessible feel. At bottom of funnel (checkout/order page), removing social proof significantly hurts conversions. Test social proof at each funnel stage independently.
Result: No statistically significant difference was detected. Inconclusive social proof tests often mean the proof type or placement didn't match what users need at that moment. Try a different format or position.
How to Apply This to Your Site
This experiment tested landing page: social proof at checkout increases orders; social proof at top of funnel hurts but produced no statistically significant change. The test was run on a landing page page in the fintech industry. Inconclusive results suggest this particular change may not be a priority — focus testing effort on higher-impact areas.
Before you test: Consider that social proof tests typically require adequate traffic to reach statistical significance. Run your test for at least 2 full business cycles to account for weekly traffic patterns.
This result reached 95% statistical confidence, meaning there is a very low probability the observed effect was due to chance. Results at this confidence level are generally considered reliable for making business decisions.
What Was Tested
ran a series of social proof tests for The Motley Fool. Email capture modal with social proof statement: −11.2% in signups. Landing page testimonials: slight decrease. Order page with testimonials removed: significant decrease in transactions. The opposite effect at top vs. bottom of funnel revealed that social proof is stage-dependent.
Methodology
Build On These Learnings
Save your own experiments, spot winning patterns across your test history, and stop repeating what's already been tried.
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