Principlev1

Use reversal designs (ABA or ABAB patterns) to strengthen

Use reversal designs (ABA or ABAB patterns) to strengthen causal claims in single-subject experiments by demonstrating that outcomes track the intervention across multiple on-off cycles.

Why This Is a Principle

This derives from Double-loop learning requires questioning the framework (learning from prediction error) and Learning occurs when outcomes differ from predictions, (prediction errors provide teaching signals). The principle prescribes a specific design pattern that follows from the axiom that confounds are increasingly unlikely to track an intervention through multiple reversals. It's actionable and applies broadly to personal experimentation.

Source Lessons

L-1111

N-of-one experiments

You are running experiments on yourself — sample size one — which means more variation is expected.

Connections

Derived From (2)

AxiomDouble-loop learning requires questioning the framework AxiomLearning occurs when outcomes differ from predictions,

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