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Assignment mechanisms

The questions ask you to meet an unfamiliar procedure and decide whether it is randomization at all, and to compare designs that look alike but license different conclusions. Recognising a named mechanism is not what has to survive the delay; judging an unfamiliar one is.

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Retrieval after a delay, which is what makes knowledge durable.

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What this covers

  • Read an assignment mechanism and state what it supports

    Given a description of how treatment was assigned, the learner can identify the mechanism, state whether it is known and independent of the potential outcomes, say what causal claim it supports, and explain why observed imbalance in a single realisation is not evidence against it.

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