High-Powered Tests Debunk Rounded Shapes' Click-Through Rate Boost
Research Paper#A/B Testing, Experimental Design, Statistical Power🔬 Research|Analyzed: Jan 3, 2026 09:23•
Published: Dec 30, 2025 23:46
•1 min read
•ArXivAnalysis
This paper highlights the importance of power analysis in A/B testing and the potential for misleading results from underpowered studies. It challenges a previously published study claiming a significant click-through rate increase from rounded button corners. The authors conducted high-powered replications and found negligible effects, emphasizing the need for rigorous experimental design and the dangers of the 'winner's curse'.
Key Takeaways
- •Underpowered A/B tests can produce exaggerated effect sizes.
- •High-powered replications are crucial for validating findings.
- •Power analysis and rigorous experimental design are essential for reliable results.
- •Rounded shapes may not significantly impact click-through rates as previously claimed.
Reference / Citation
View Original"The original study's claim of a 55% increase in click-through rate was found to be implausibly large, with high-powered replications showing negligible effects."