{"@context":"https://schema.org","@type":"Dataset","@id":"https://doi.org/10.55157/csd.tool.nor.2026.001","url":"https://conductscience.org/data/records/tool-novel-object-recognition-calculator","name":"ConductScience NOR Discrimination Index Calculator: method and validation record","description":"Method and validation record for the free NOR Discrimination Index Calculator at conductscience.com/tools/novel-object-recognition-calculator. From the time each animal explores the novel and the familiar object, the tool computes the discrimination index (N − F) / (N + F) and the preference index N / (N + F), with group means, SDs and SEMs. Three hand-worked examples, on the discrimination index of Ennaceur and Delacour (1988), cover a novel-object preference, a familiar-object preference, and an animal that explored neither object, which has no index. 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