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Narrative Similarity as Common Summary Kypridemou, Elektra Michael, Loizos narratives similarity common summary empirical study questionnaire The ability to identify similarities between narratives has been argued to be central in human interactions. Previous work that sought to formalize this task has hypothesized that narrative similarity can be equated to the existence of a common summary between the narratives involved. We offer tangible psychological evidence in support of this hypothesis. Human participants in our empirical study were presented with triples of stories, and were asked to rate: (i) the degree of similarity between story A and story B; (ii) the appropriateness of story C as a summary of story A; (iii) the appropriateness of story C as a summary of story B. The story triples were selected systematically to span the space of their possible interrelations. Empirical evidence gathered from this study overwhelmingly supports the position that the higher the latter two ratings are, the higher the first rating also is. Thus, while this work does not purport to formally define either of the two tasks involved, it does argue that one can be meaningfully reduced to the other. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Elektra Kypridemou and Loizos Michael 2013 Is Part Of OASIcs, Volume 32, 2013 Workshop on Computational Models of Narrative InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.CMN.2013.129 urn:nbn:de:0030-drops-41528 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.CMN.2013.129 eng https://creativecommons.org/licenses/by/3.0/legalcode