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We use this “age heaping” to measure cognitive ability in quantitative reasoning, or “numeracy”. We construct a database of age heaping-based estimates of basic numeracy with exceptional geographic and temporal coverage"},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2013-12-26"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Arts and Humanities"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"numerancy"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"ABBC"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"Dataset constructed with the help of several coauthors, without implying any responsibility to them for potential mistakes (Valeria Prayon, Dorothee Crayen, Dácil Juif, Ralph Hippe, Christina Mumme and many others) \n\nPlease consult the working paper for a description of the data and sources."},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"van Leeuwen, Bas"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2015-12-14"}]},"dansDataVaultMetadata":{"displayName":"Data Vault Metadata","name":"dansDataVaultMetadata","fields":[{"typeName":"dansDataversePid","multiple":false,"typeClass":"primitive","value":"doi:10.34894/I0L2TH"},{"typeName":"dansDataversePidVersion","multiple":false,"typeClass":"primitive","value":"1.1"},{"typeName":"dansBagId","multiple":false,"typeClass":"primitive","value":"urn:uuid:49fb8a87-bd40-4053-9acc-4f0c248eaef9"},{"typeName":"dansNbn","multiple":false,"typeClass":"primitive","value":"urn:nbn:nl:ui:13-be3fa808-3570-448e-a6f4-41bf49d28ec7"}]}},"files":[{"description":"","label":"Numeracy(Total).doc","restricted":false,"version":1,"datasetVersionId":35378,"dataFile":{"id":575995,"persistentId":"","filename":"Numeracy(Total).doc","contentType":"application/msword","friendlyType":"MS Word","filesize":367616,"description":"","storageIdentifier":"surf://store:19b9ee938a1-a43cbcdca7bc","rootDataFileId":-1,"checksum":{"type":"SHA-1","value":"a7792c4a2cdd56940aa1f42185a359d0ab696961"},"tabularData":false,"creationDate":"2026-01-08","publicationDate":"2026-01-08","lastUpdateTime":"2026-09-19T21:19:01Z","fileAccessRequest":true}},{"description":"","label":"Numeracy(Total)-historical.xlsx","restricted":false,"version":1,"datasetVersionId":35378,"dataFile":{"id":575996,"persistentId":"","filename":"Numeracy(Total)-historical.xlsx","contentType":"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet","friendlyType":"MS Excel Spreadsheet","filesize":77321,"description":"","storageIdentifier":"surf://store:19b9ee939c1-e0eb72412d3b","rootDataFileId":-1,"checksum":{"type":"SHA-1","value":"fb3b10c452599e53d7087f0e8de3341fb109c788"},"tabularData":false,"creationDate":"2026-01-08","publicationDate":"2026-01-08","lastUpdateTime":"2026-09-19T21:19:01Z","fileAccessRequest":true}}]}}}