{"id":"https://openalex.org/W1998350076","doi":"https://doi.org/10.1038/scientificamerican1101-78","title":"Does Class Size Matter?","display_name":"Does Class Size Matter?","publication_year":2001,"publication_date":"2001-11-01","ids":{"openalex":"https://openalex.org/W1998350076","doi":"https://doi.org/10.1038/scientificamerican1101-78","mag":"1998350076","pmid":"https://pubmed.ncbi.nlm.nih.gov/11681178"},"language":"en","primary_location":{"id":"doi:10.1038/scientificamerican1101-78","doi":"https://doi.org/10.1038/scientificamerican1101-78","is_oa":false,"landing_page_url":"https://doi.org/10.1038/scientificamerican1101-78","pdf_url":null,"source":{"id":"https://openalex.org/S100460328","display_name":"Scientific American","issn_l":"0036-8733","issn":["0036-8733","1946-7087"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["medline","norway-1","poland-70","russia-white-list-4"],"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scientific American","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5008503776","display_name":"Ronald G. Ehrenberg","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I205783295","display_name":"Cornell University","ror":"https://ror.org/05bnh6r87","country_code":"US","type":"education","lineage":["https://openalex.org/I205783295"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ronald G. Ehrenberg","raw_affiliation_strings":["Cornell University, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Cornell University, USA","institution_ids":["https://openalex.org/I205783295"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006303519","display_name":"Dominic J. Brewer","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Dominic J. Brewer","raw_affiliation_strings":["Applied Statistics, Social Science, and Humanities"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Applied Statistics, Social Science, and Humanities","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018467999","display_name":"Adam Gamoran","orcid":"https://orcid.org/0000-0003-0495-4883","observed_orcids":["https://orcid.org/0000-0003-0495-4883"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Adam Gamoran","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5109845656","display_name":"J. Douglas Willms","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. Douglas Willms","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":18.7952,"has_fulltext":false,"cited_by_count":45,"citation_normalized_percentile":{"value":0.98842068,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"285","issue":"5","first_page":"78","last_page":"85"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10674","display_name":"School Choice and Performance","score":0.5590999722480774,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10674","display_name":"School Choice and Performance","score":0.5590999722480774,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12950","display_name":"Educational Environments and Student Outcomes","score":0.3366999924182892,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10589","display_name":"Early Childhood Education and Development","score":0.013799999840557575,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/class-size","display_name":"class size","score":0.9909999966621399},{"id":"https://openalex.org/keywords/academic-achievement","display_name":"academic performance","score":0.6930000185966492}],"concepts":[{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6149810552597046},{"id":"https://openalex.org/C2776824051","wikidata":"https://www.wikidata.org/wiki/Q22907283","display_name":"Class size","level":2,"score":0.5257191061973572},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3888818025588989},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.24328267574310303},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.18908962607383728},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1118592917919159}],"mesh":[{"descriptor_ui":"D001519","descriptor_name":"Behavior","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D003365","descriptor_name":"Costs and Cost Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004493","descriptor_name":"Education","qualifier_ui":"Q000191","qualifier_name":"economics","is_major_topic":false},{"descriptor_ui":"D004493","descriptor_name":"Education","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D004521","descriptor_name":"Educational Measurement","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007858","descriptor_name":"Learning","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008913","descriptor_name":"Minority Groups","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D009622","descriptor_name":"Noise","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013332","descriptor_name":"Student Dropouts","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013334","descriptor_name":"Students","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013663","descriptor_name":"Teaching","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D014481","descriptor_name":"United States","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1038/scientificamerican1101-78","doi":"https://doi.org/10.1038/scientificamerican1101-78","is_oa":false,"landing_page_url":"https://doi.org/10.1038/scientificamerican1101-78","pdf_url":null,"source":{"id":"https://openalex.org/S100460328","display_name":"Scientific American","issn_l":"0036-8733","issn":["0036-8733","1946-7087"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["medline","norway-1","poland-70","russia-white-list-4"],"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scientific American","raw_type":"journal-article"},{"id":"pmid:11681178","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/11681178","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scientific American","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4233585862","https://openalex.org/W268395114","https://openalex.org/W4213458944","https://openalex.org/W2014274180","https://openalex.org/W283446102","https://openalex.org/W7096820470","https://openalex.org/W4250772940","https://openalex.org/W274991304","https://openalex.org/W2090198778","https://openalex.org/W4396794700"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}