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. Author manuscript; available in PMC: 2008 Dec 3.
Published in final edited form as: Psychon Bull Rev. 2006 Aug;13(4):549–562. doi: 10.3758/bf03193962

Figure 2.

Figure 2

Utility functions and the corresponding expected utility of results below them. Left: The step function returns an expected value of prep, the probability of observing d2 > 0 in replication. The intersection of the curves with the criterion lines marks the first combination of n and d1 to achieve significance at α ≤ .05 (lower criterion) or α ≤ .01 (upper criterion). Right: A symmetric utility function yielding a set of expected values shown in panel B′ that are congruent with those in panel A′. Note the change of scale, with origin now at 0.