Randomized Controlled Trial / RCT
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
Randomly assign study subjects to groups, one group receives the intervention, another receives a placebo, while controlling all other variables. It is the gold standard for causal inference.
SCAFFOLDING EFFECT
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Touchstone of truth. Don't believe "my friend took it and it worked." Ask: Is there RCT evidence? Without controlled variables and randomization, experience may just be placebo effect or spontaneous recovery.
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A randomized controlled trial (RCT) randomly assigns participants to experimental and control groups, controls confounding variables, and thus enables reliable causal inference.
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- zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E9%9A%8F%E6%9C%BA%E5%AF%B9%E7%85%A7%E8%AF%95%E9%AA%8Cverified
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