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We performed two studies (Study A and B), both using a within subjects, 2x2x2x2 design. We manipulated strategy choice, map size, strategy gap size and oracle accuracy. The gem layout (randomized for Study A, and spatial for study B) affected only the strategy choice factor—that is, the effect of the two primary strategies: call oracle first, or never call—shown in red and blue text above. See the main text for details.
