{"id":"https://openalex.org/W2129653061","doi":"https://doi.org/10.1073/pnas.0709884105","title":"Conceptual knowledge increases infants' memory capacity","display_name":"Conceptual knowledge increases infants' memory capacity","publication_year":2008,"publication_date":"2008-07-14","ids":{"openalex":"https://openalex.org/W2129653061","doi":"https://doi.org/10.1073/pnas.0709884105","mag":"2129653061","pmid":"https://pubmed.ncbi.nlm.nih.gov/18626025","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/2464616"},"language":"en","primary_location":{"id":"doi:10.1073/pnas.0709884105","doi":"https://doi.org/10.1073/pnas.0709884105","is_oa":true,"landing_page_url":"https://doi.org/10.1073/pnas.0709884105","pdf_url":"https://www.pnas.org/content/pnas/105/29/9926.full.pdf","source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.pnas.org/content/pnas/105/29/9926.full.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5037363226","display_name":"Lisa Feigenson","orcid":"https://orcid.org/0000-0002-9015-7065","observed_orcids":["https://orcid.org/0000-0002-9015-7065"]},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Lisa Feigenson","raw_affiliation_strings":["Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218","Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045387345","display_name":"Justin Halberda","orcid":"https://orcid.org/0000-0002-5619-3249","observed_orcids":["https://orcid.org/0000-0002-5619-3249"]},"institutions":[{"id":"https://openalex.org/I102322142","display_name":"Rutgers, The State University of New Jersey","ror":"https://ror.org/05vt9qd57","country_code":"US","type":"education","lineage":["https://openalex.org/I102322142"]},{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Justin Halberda","raw_affiliation_strings":["Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218","Rutgers, The State University of New Jersey, Piscataway, NJ,"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Psychological and Brain Sciences, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Rutgers, The State University of New Jersey, Piscataway, NJ,","institution_ids":["https://openalex.org/I102322142"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":10.2171,"has_fulltext":true,"cited_by_count":143,"citation_normalized_percentile":{"value":0.98007278,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"105","issue":"29","first_page":"9926","last_page":"9930"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10656","display_name":"Child and Animal Learning Development","score":0.9063000082969666,"subfield":{"id":"https://openalex.org/subfields/3204","display_name":"Developmental and Educational Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10656","display_name":"Child and Animal Learning Development","score":0.9063000082969666,"subfield":{"id":"https://openalex.org/subfields/3204","display_name":"Developmental and Educational Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11577","display_name":"Cognitive Abilities and Testing","score":0.04540000110864639,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11345","display_name":"Cognitive and developmental aspects of mathematical skills","score":0.019500000402331352,"subfield":{"id":"https://openalex.org/subfields/3204","display_name":"Developmental and Educational Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/working-memory","display_name":"working memory","score":0.6449999809265137},{"id":"https://openalex.org/keywords/chunking","display_name":"chunking","score":0.6660000085830688},{"id":"https://openalex.org/keywords/conceptual-knowledge","display_name":"conceptual knowledge","score":0.9020000100135803},{"id":"https://openalex.org/keywords/infants","display_name":"infants","score":0.7480000257492065},{"id":"https://openalex.org/keywords/memory-capacity","display_name":"memory capacity","score":0.7179999947547913},{"id":"https://openalex.org/keywords/hidden-object-task","display_name":"hidden object task","score":0.656000018119812},{"id":"https://openalex.org/keywords/metamemory","display_name":"metamemory","score":0.6309999823570251},{"id":"https://openalex.org/keywords/memory-expansion","display_name":"memory expansion","score":0.49000000953674316},{"id":"https://openalex.org/keywords/perceptual-cues","display_name":"perceptual cues","score":0.47099998593330383},{"id":"https://openalex.org/keywords/spatial-cues","display_name":"spatial cues","score":0.7490000128746033},{"id":"https://openalex.org/keywords/linguistic-cues","display_name":"linguistic cues","score":0.5379999876022339}],"concepts":[{"id":"https://openalex.org/C203357204","wikidata":"https://www.wikidata.org/wiki/Q1089605","display_name":"Chunking (psychology)","level":2,"score":0.9364327788352966},{"id":"https://openalex.org/C186644900","wikidata":"https://www.wikidata.org/wiki/Q194152","display_name":"Parsing","level":2,"score":0.7130253314971924},{"id":"https://openalex.org/C21963081","wikidata":"https://www.wikidata.org/wiki/Q11337567","display_name":"Working memory","level":3,"score":0.6490048170089722},{"id":"https://openalex.org/C180747234","wikidata":"https://www.wikidata.org/wiki/Q23373","display_name":"Cognitive psychology","level":1,"score":0.6315006613731384},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6267528533935547},{"id":"https://openalex.org/C26760741","wikidata":"https://www.wikidata.org/wiki/Q160402","display_name":"Perception","level":2,"score":0.48938268423080444},{"id":"https://openalex.org/C157486923","wikidata":"https://www.wikidata.org/wiki/Q1376436","display_name":"String (physics)","level":2,"score":0.4813840687274933},{"id":"https://openalex.org/C188147891","wikidata":"https://www.wikidata.org/wiki/Q147638","display_name":"Cognitive science","level":1,"score":0.4112674295902252},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.3784429430961609},{"id":"https://openalex.org/C169900460","wikidata":"https://www.wikidata.org/wiki/Q2200417","display_name":"Cognition","level":2,"score":0.37071114778518677},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.32312747836112976},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.09448695182800293},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D000367","descriptor_name":"Age Factors","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":"D007223","descriptor_name":"Infant","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008568","descriptor_name":"Memory","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D011581","descriptor_name":"Psychological Tests","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014796","descriptor_name":"Visual Perception","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D019359","descriptor_name":"Knowledge","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":3,"locations":[{"id":"doi:10.1073/pnas.0709884105","doi":"https://doi.org/10.1073/pnas.0709884105","is_oa":true,"landing_page_url":"https://doi.org/10.1073/pnas.0709884105","pdf_url":"https://www.pnas.org/content/pnas/105/29/9926.full.pdf","source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},{"id":"pmh:oai:pubmedcentral.nih.gov:2464616","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2464616","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"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":"Proc Natl Acad Sci U S A","raw_type":"Text"},{"id":"pmid:18626025","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/18626025","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":"Proceedings of the National Academy of Sciences of the United States of America","raw_type":"Journal Article"}],"best_oa_location":{"id":"doi:10.1073/pnas.0709884105","doi":"https://doi.org/10.1073/pnas.0709884105","is_oa":true,"landing_page_url":"https://doi.org/10.1073/pnas.0709884105","pdf_url":"https://www.pnas.org/content/pnas/105/29/9926.full.pdf","source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G6271763553","display_name":"Development of short-term memory: Chunking in infancy","funder_award_id":"R03HD054416","funder_id":"https://openalex.org/F4320337611","funder_display_name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development"}],"funders":[{"id":"https://openalex.org/F4320306183","display_name":"James S. McDonnell Foundation","ror":"https://ror.org/03dy4aq19"},{"id":"https://openalex.org/F4320337364","display_name":"National Institute of Child Health and Human Development","ror":"https://ror.org/04byxyr05"},{"id":"https://openalex.org/F4320337611","display_name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","ror":"https://ror.org/04byxyr05"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2129653061.pdf","grobid_xml":"https://content.openalex.org/works/W2129653061.grobid-xml"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W1747565446","https://openalex.org/W1964216298","https://openalex.org/W1968623092","https://openalex.org/W1980614523","https://openalex.org/W1984314602","https://openalex.org/W1996356415","https://openalex.org/W2008448568","https://openalex.org/W2015307982","https://openalex.org/W2015516368","https://openalex.org/W2015634454","https://openalex.org/W2021019052","https://openalex.org/W2021253200","https://openalex.org/W2023078830","https://openalex.org/W2049950466","https://openalex.org/W2052444715","https://openalex.org/W2053566542","https://openalex.org/W2061874720","https://openalex.org/W2068805221","https://openalex.org/W2085886084","https://openalex.org/W2091785129","https://openalex.org/W2101981010","https://openalex.org/W2106750301","https://openalex.org/W2108071403","https://openalex.org/W2108661970","https://openalex.org/W2115628111","https://openalex.org/W2118525872","https://openalex.org/W2119238414","https://openalex.org/W2126034220","https://openalex.org/W2132018551","https://openalex.org/W2137094971","https://openalex.org/W2142535778","https://openalex.org/W2143556801","https://openalex.org/W2158679981","https://openalex.org/W2160556050","https://openalex.org/W2166352203","https://openalex.org/W2166667242","https://openalex.org/W2170794361","https://openalex.org/W2171259058","https://openalex.org/W2171600528","https://openalex.org/W2240086165","https://openalex.org/W2579555219","https://openalex.org/W4207080468","https://openalex.org/W4210416677"],"related_works":["https://openalex.org/W2770261299","https://openalex.org/W2004738513","https://openalex.org/W2161080928","https://openalex.org/W2796366652","https://openalex.org/W4247099254","https://openalex.org/W3209285820","https://openalex.org/W4388277808","https://openalex.org/W1972445725","https://openalex.org/W1778035282","https://openalex.org/W2913982371"],"abstract_inverted_index":{"Adults":[0],"can":[1,65,81,103],"expand":[2],"their":[3],"limited":[4],"working":[5,94],"memory":[6,134,159],"capacity":[7],"by":[8,60],"using":[9],"stored":[10,126],"conceptual":[11,67,138],"knowledge":[12,68,139],"to":[13,69,115],"chunk":[14],"items":[15],"into":[16,33,119],"interrelated":[17],"units.":[18],"For":[19],"example,":[20],"adults":[21],"are":[22,123],"better":[23],"at":[24,87],"remembering":[25],"the":[26,37,55,73,90,152,164,168],"letter":[27],"string":[28],"PBSBBCCNN":[29],"after":[30],"parsing":[31],"it":[32],"three":[34,84],"smaller":[35,120],"units:":[36],"television":[38],"acronyms":[39],"PBS,":[40],"BBC,":[41],"and":[42,150],"CNN.":[43],"Is":[44],"this":[45,58,105],"chunking":[46],"a":[47,157],"learned":[48],"strategy":[49],"acquired":[50],"through":[51],"instruction?":[52],"We":[53],"explored":[54],"origins":[56],"of":[57,75,93,133,154,170],"ability":[59],"asking":[61],"whether":[62],"untrained":[63],"infants":[64,80,102],"use":[66],"increase":[70],"memory.":[71,95,128],"In":[72,96],"absence":[74,153],"any":[76],"grouping":[77],"cues,":[78],"14-month-old":[79],"track":[82],"only":[83],"hidden":[85],"objects":[86],"once,":[88],"demonstrating":[89],"standard":[91],"limit":[92,106],"four":[97],"experiments":[98],"we":[99],"show":[100],"that":[101,122,147],"surpass":[104],"when":[107],"given":[108],"perceptual,":[109],"conceptual,":[110],"linguistic,":[111],"or":[112],"spatial":[113],"cues":[114],"parse":[116],"larger":[117],"arrays":[118],"units":[121],"more":[124],"efficiently":[125],"in":[127,140,151],"This":[129],"work":[130],"offers":[131],"evidence":[132],"expansion":[135],"based":[136],"on":[137],"untrained,":[141],"preverbal":[142],"subjects.":[143],"Our":[144],"findings":[145],"demonstrate":[146],"without":[148],"instruction,":[149],"robust":[155],"language,":[156],"fundamental":[158],"computation":[160],"is":[161],"available":[162],"throughout":[163],"lifespan,":[165],"years":[166],"before":[167],"development":[169],"explicit":[171],"metamemorial":[172],"strategies.":[173]},"counts_by_year":[{"year":2026,"cited_by_count":6},{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":9},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":18},{"year":2018,"cited_by_count":6},{"year":2017,"cited_by_count":8},{"year":2016,"cited_by_count":15},{"year":2015,"cited_by_count":7},{"year":2014,"cited_by_count":9},{"year":2013,"cited_by_count":9},{"year":2012,"cited_by_count":6}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}