Advanced Articles — Atticus Li

Atticus Li

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Articles exploring advanced through the lens of behavioral science and experimentation. Practical frameworks for growth leaders who measure in revenue, not vanity metrics.

2 articles

a-b-testing Mar 28, 2026 1 min read

Bayesian vs. Frequentist A/B Testing: Which Approach Should You Use?

Compare Bayesian and Frequentist approaches to A/B testing. Understand the practical differences, when each excels, and why the debate matters less than your fundamentals.

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Bayesian vs. Frequentist A/B Testing: Which Approach Should You Use?

a-b-testing Mar 28, 2026 1 min read

External Validity Threats: Why Your A/B Test Results Might Not Hold

Understand why A/B test results might not hold in the real world. Learn about seasonality, selection bias, novelty effects, and how to protect your conclusions from external validity threats.

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External Validity Threats: Why Your A/B Test Results Might Not Hold

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