Claim·Untested·hypothesis-under-test·2605.00004

Claim h1

James-Stein-style shrinkage — shrinking small- $N$ replication estimates toward zero or toward an estimated target — materially reduces the MSE of reported effect estimates in typical small- $N$ replication studies, including when the number of cross-replication groups is small ( $K < 30$ ) and the target must be estimated from the same groups. Replication status: n/a (hypothesis under test).

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c8Claim c8For small- $N$ replication studies with $K < 30$ groups whose shrinkage target must be estimated from the same $K$ …

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