{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T07:20:48Z","timestamp":1783063248595,"version":"3.54.6"},"reference-count":106,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T00:00:00Z","timestamp":1780358400000},"content-version":"vor","delay-in-days":32,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:00:00Z","timestamp":1777593600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","award":["2018\/30\/E\/HS6\/00214"],"award-info":[{"award-number":["2018\/30\/E\/HS6\/00214"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","award":["2022\/47\/B\/HS6\/02565"],"award-info":[{"award-number":["2022\/47\/B\/HS6\/02565"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004281","name":"Narodowe Centrum Nauki","doi-asserted-by":"publisher","award":["2022\/45\/N\/HS6\/02085"],"award-info":[{"award-number":["2022\/45\/N\/HS6\/02085"]}],"id":[{"id":"10.13039\/501100004281","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014434","name":"Narodowa Agencja Wymiany Akademickiej","doi-asserted-by":"publisher","award":["BPI\/STE\/2021\/1\/00030\/U\/00001"],"award-info":[{"award-number":["BPI\/STE\/2021\/1\/00030\/U\/00001"]}],"id":[{"id":"10.13039\/501100014434","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000913","name":"James S. McDonnell Foundation","doi-asserted-by":"publisher","award":["doi.org\/10.37717\/2022\u20103711"],"award-info":[{"award-number":["doi.org\/10.37717\/2022\u20103711"]}],"id":[{"id":"10.13039\/100000913","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100014013","name":"UK Research and Innovation","doi-asserted-by":"publisher","award":["MR\/X032922\/1"],"award-info":[{"award-number":["MR\/X032922\/1"]}],"id":[{"id":"10.13039\/100014013","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Infancy"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Infants manually contact objects differently depending on their body position and the physical properties of objects. Previous studies have examined these factors separately, in structured laboratory settings, and laid the foundation for the investigation of the interaction of these elements. The current study revisits ideas from structured research in less controlled conditions by investigating how body position and the type of object shape manual contact with objects during free\u2010flowing play. Nine\u2010month\u2010old infants (\n                    <jats:italic>N<\/jats:italic>\n                    \u00a0=\u00a080) participated in a semi\u2010structured dyadic play session with their caregiver, interacting with four objects of two different kinds \u2010 two small and graspable objects; and two larger and stationary objects requiring specific actions to elicit an outcome (e.g.,\u00a0button pressing to make balls spin). The dyad was not constrained in terms of positioning, location on the floor, or movement around the room. We examined how the duration and frequency of infants' manual contact with objects varied based on the real\u2010time interaction between object type and body position. The results indicate that infants contacted objects more frequently while sitting independently compared to other positions. Stationary objects were contacted more frequently but for shorter durations than graspable objects, regardless of the body position. Infants contacted graspable objects longer while sitting independently (compared to other positions), however, stationary objects were contacted with similar durations for all body positions. We found that durations of object contact depend on the interaction between object type and body position, which is more complex than what could be predicted by studies that examined these factors in isolation. These results highlight the need to study multiple interacting elements in less controlled settings.\n                  <\/jats:p>","DOI":"10.1111\/infa.70091","type":"journal-article","created":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T02:44:26Z","timestamp":1780454666000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Toward Understanding Free\u2010Flowing Manual Object Contact: Real\u2010Time Interaction Between Body Position and Object Type in 9\u2010Month\u2010Olds"],"prefix":"10.1111","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6469-4107","authenticated-orcid":false,"given":"Agata","family":"Kozio\u0142","sequence":"first","affiliation":[{"name":"Neurocognitive Development Lab Institute of Psychology Polish Academy of Sciences  Warsaw Poland"},{"name":"Graduate School for Social Research Polish Academy of Sciences  Warsaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6790-9559","authenticated-orcid":false,"given":"Zuzanna","family":"Lauda\u0144ska","sequence":"additional","affiliation":[{"name":"Neurocognitive Development Lab Institute of Psychology Polish Academy of Sciences  Warsaw Poland"},{"name":"Department of Child and Adolescent Psychiatry Heidelberg University Hospital Heidelberg University  Heidelberg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2002-5371","authenticated-orcid":false,"given":"Karolina","family":"Babis","sequence":"additional","affiliation":[{"name":"Neurocognitive Development Lab Institute of Psychology Polish Academy of Sciences  Warsaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8841-8644","authenticated-orcid":false,"given":"Hana","family":"D\u2019Souza","sequence":"additional","affiliation":[{"name":"Centre for Human Developmental Science School of Psychology Cardiff University  Cardiff UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0390-5759","authenticated-orcid":false,"given":"Przemys\u0142aw","family":"Tomalski","sequence":"additional","affiliation":[{"name":"Neurocognitive Development Lab Institute of Psychology Polish Academy of Sciences  Warsaw Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,2]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1037\/0096\u20101523.26.3.1148"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/0956797612446346"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.2307\/1131332"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.4324\/9781003387145-8"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdep.12085"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00221\u2010005\u20100169\u20109"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2005.03.001"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0166-4115(08)60959-0"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.32614\/RJ\u20102017\u2010066"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.2307\/1131323"},{"key":"e_1_2_12_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2006.07.006"},{"key":"e_1_2_12_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/001316446002000104"},{"key":"e_1_2_12_14_1","volume-title":"Statistical Power Analysis for the Behavioral Sciences","author":"Cohen J.","year":"1988"},{"key":"e_1_2_12_15_1","doi-asserted-by":"publisher","DOI":"10.1037\/0096\u20101523.22.2.502"},{"key":"e_1_2_12_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2015.06.003"},{"key":"e_1_2_12_17_1","doi-asserted-by":"publisher","DOI":"10.1590\/S1413\u201035552013005000099"},{"key":"e_1_2_12_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdev.12464"},{"key":"e_1_2_12_19_1","doi-asserted-by":"publisher","DOI":"10.1098\/rsos.180191"},{"key":"e_1_2_12_20_1","doi-asserted-by":"publisher","DOI":"10.1017\/S030500091700006X"},{"key":"e_1_2_12_21_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12409"},{"key":"e_1_2_12_22_1","volume-title":"The Oxford Handbook of down syndrome and Development","author":"D\u2019Souza H.","year":"2020"},{"key":"e_1_2_12_23_1","first-page":"233","volume-title":"Advances in Child Development and Behavior","author":"D\u2019Souza H.","year":"2024"},{"key":"e_1_2_12_24_1","doi-asserted-by":"publisher","DOI":"10.1080\/00222899709600835"},{"key":"e_1_2_12_25_1","doi-asserted-by":"publisher","DOI":"10.1080\/00222895.1987.10735405"},{"key":"e_1_2_12_26_1","doi-asserted-by":"publisher","DOI":"10.2307\/2287039"},{"key":"e_1_2_12_27_1","doi-asserted-by":"publisher","DOI":"10.3390\/bs13060440"},{"key":"e_1_2_12_28_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2023.1278774"},{"key":"e_1_2_12_29_1","doi-asserted-by":"publisher","DOI":"10.1111\/infa.12272"},{"key":"e_1_2_12_30_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12626"},{"key":"e_1_2_12_31_1","first-page":"454","volume-title":"Proceedings of the 35th Annual Meeting of the Cognitive Science Society","author":"Frank M. C.","year":"2013"},{"key":"e_1_2_12_32_1","doi-asserted-by":"publisher","DOI":"10.2307\/1129956"},{"key":"e_1_2_12_33_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.ps.39.020188.000245"},{"key":"e_1_2_12_34_1","volume-title":"The Ecological Approach to Visual Perception","author":"Gibson J.","year":"1979"},{"key":"e_1_2_12_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sapharm.2012.04.004"},{"key":"e_1_2_12_36_1","doi-asserted-by":"publisher","DOI":"10.1002\/9780470752180.ch1"},{"key":"e_1_2_12_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2013.09.009"},{"key":"e_1_2_12_38_1","doi-asserted-by":"publisher","DOI":"10.1111\/2041\u2010210X.12504"},{"key":"e_1_2_12_39_1","doi-asserted-by":"publisher","DOI":"10.1155\/NP.2005.99"},{"key":"e_1_2_12_40_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.earlhumdev.2008.09.002"},{"key":"e_1_2_12_41_1","doi-asserted-by":"publisher","DOI":"10.2522\/ptj.20100006"},{"key":"e_1_2_12_42_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010020\u20102649\u20102"},{"key":"e_1_2_12_43_1","doi-asserted-by":"publisher","DOI":"10.1111\/infa.12289"},{"key":"e_1_2_12_44_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdev.13669"},{"key":"e_1_2_12_45_1","doi-asserted-by":"publisher","DOI":"10.3758\/s13428\u2010014\u20100506\u20107"},{"key":"e_1_2_12_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jecp.2013.09.003"},{"key":"e_1_2_12_47_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dcn.2010.07.003"},{"key":"e_1_2_12_48_1","doi-asserted-by":"publisher","DOI":"10.1177\/0022022115593803"},{"key":"e_1_2_12_49_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467\u20108624.2011.01595.x"},{"key":"e_1_2_12_50_1","doi-asserted-by":"publisher","DOI":"10.3390\/s23052653"},{"key":"e_1_2_12_51_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.22233"},{"key":"e_1_2_12_52_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.13318"},{"key":"e_1_2_12_53_1","doi-asserted-by":"publisher","DOI":"10.1093\/acprof:oso\/9780195333169.001.0001"},{"key":"e_1_2_12_54_1","doi-asserted-by":"publisher","DOI":"10.3390\/e24040552"},{"key":"e_1_2_12_55_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2022.896319"},{"key":"e_1_2_12_56_1","doi-asserted-by":"publisher","DOI":"10.1016\/0010\u20100285(87)90008\u20109"},{"key":"e_1_2_12_57_1","doi-asserted-by":"crossref","unstructured":"Lenth R. V.2017.Emmeans: Estimated Marginal Means Aka Least\u2010Squares Means (P.\u00a01.11.2\u20108) [R Package].https:\/\/doi.org\/10.32614\/CRAN.package.emmeans.","DOI":"10.32614\/CRAN.package.emmeans"},{"key":"e_1_2_12_58_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12370"},{"key":"e_1_2_12_59_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2016.00475"},{"key":"e_1_2_12_60_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2012.09.003"},{"key":"e_1_2_12_61_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ridd.2013.02.010"},{"key":"e_1_2_12_62_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2014.05.003"},{"key":"e_1_2_12_63_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.21854"},{"key":"e_1_2_12_64_1","doi-asserted-by":"publisher","DOI":"10.18637\/jss.v112.i01"},{"key":"e_1_2_12_65_1","doi-asserted-by":"crossref","unstructured":"McKinney W.2010.Data Structures for Statistical Computing in Python 56\u201361.https:\/\/doi.org\/10.25080\/Majora\u201092bf1922\u201000a.","DOI":"10.25080\/Majora-92bf1922-00a"},{"key":"e_1_2_12_66_1","doi-asserted-by":"publisher","DOI":"10.1080\/01942638.2022.2027845"},{"key":"e_1_2_12_67_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2041\u2010210x.2012.00261.x"},{"key":"e_1_2_12_68_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.420220806"},{"key":"e_1_2_12_69_1","doi-asserted-by":"publisher","DOI":"10.1037\/0012\u20101649.37.4.561"},{"key":"e_1_2_12_70_1","doi-asserted-by":"publisher","DOI":"10.1109\/DevLrn.2012.6400819"},{"key":"e_1_2_12_71_1","first-page":"839","volume-title":"Proceedings of the 31st Annual Meeting of the Cognitive Science Society","author":"Pereira A.","year":"2009"},{"key":"e_1_2_12_72_1","unstructured":"R Core Team.2021.R (Version 4.4.1). R: A Language and Environment for Statistical Computing. [Computer software] R Foundation for Statistical Computing.https:\/\/www.R\u2010project.org\/."},{"key":"e_1_2_12_73_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2023.04.004"},{"key":"e_1_2_12_74_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00221\u2010013\u20103544\u2010y"},{"key":"e_1_2_12_75_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.21571"},{"key":"e_1_2_12_76_1","doi-asserted-by":"publisher","DOI":"10.2307\/1129334"},{"key":"e_1_2_12_77_1","doi-asserted-by":"publisher","DOI":"10.1037\/0012\u20101649.25.6.871"},{"key":"e_1_2_12_78_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022\u20100965(69)90025\u20103"},{"key":"e_1_2_12_79_1","doi-asserted-by":"publisher","DOI":"10.1037\/0012\u20101649.28.5.851"},{"key":"e_1_2_12_80_1","doi-asserted-by":"publisher","DOI":"10.1152\/jn.01193.2011"},{"key":"e_1_2_12_81_1","doi-asserted-by":"publisher","DOI":"10.1006\/jecp.1994.1047"},{"key":"e_1_2_12_82_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.13239"},{"key":"e_1_2_12_83_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jenvp.2025.102867"},{"key":"e_1_2_12_84_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.13281"},{"key":"e_1_2_12_85_1","article-title":"Annotation by category\u2010ELAN and ISO DCR","author":"Sloetjes H.","year":"2008","journal-title":"European Language Resources Association (ELRA)"},{"key":"e_1_2_12_86_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1364\u20106613(03)00156\u20106"},{"key":"e_1_2_12_87_1","doi-asserted-by":"publisher","DOI":"10.1111\/infa.12039"},{"key":"e_1_2_12_88_1","doi-asserted-by":"publisher","DOI":"10.1002\/dev.20595"},{"key":"e_1_2_12_89_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12205"},{"key":"e_1_2_12_90_1","doi-asserted-by":"publisher","DOI":"10.1201\/9780429092060"},{"key":"e_1_2_12_91_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.infbeh.2022.101712"},{"key":"e_1_2_12_92_1","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12456"},{"key":"e_1_2_12_93_1","doi-asserted-by":"publisher","DOI":"10.1037\/0003\u2010066X.50.2.79"},{"key":"e_1_2_12_94_1","doi-asserted-by":"publisher","DOI":"10.1080\/10481881509348831"},{"key":"e_1_2_12_95_1","unstructured":"The MathWorks Inc.2021.MATLAB Version: 9.10.0 (R2021a). [Computer software] MathWorks Inc.https:\/\/www.mathworks.com."},{"key":"e_1_2_12_96_1","doi-asserted-by":"publisher","DOI":"10.1037\/dev0000328"},{"key":"e_1_2_12_97_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1750\u20108606.2011.00197.x"},{"key":"e_1_2_12_98_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41592\u2010019\u20100686\u20102"},{"key":"e_1_2_12_99_1","doi-asserted-by":"publisher","DOI":"10.1037\/0012\u20101649.18.3.450"},{"key":"e_1_2_12_100_1","doi-asserted-by":"publisher","DOI":"10.1037\/0012\u20101649.20.3.378"},{"key":"e_1_2_12_101_1","doi-asserted-by":"publisher","DOI":"10.1016\/0022\u20100965(79)90109\u20107"},{"key":"e_1_2_12_102_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0010\u20100277(99)00035\u20109"},{"key":"e_1_2_12_103_1","doi-asserted-by":"publisher","DOI":"10.1006\/cogp.1998.0690"},{"key":"e_1_2_12_104_1","doi-asserted-by":"publisher","DOI":"10.1111\/1467\u20107687.00019"},{"key":"e_1_2_12_105_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyg.2016.00587"},{"key":"e_1_2_12_106_1","doi-asserted-by":"publisher","DOI":"10.1145\/1978942.1978963"},{"key":"e_1_2_12_107_1","doi-asserted-by":"publisher","DOI":"10.1111\/cdev.12730"}],"container-title":["Infancy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/infa.70091","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/infa.70091","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/infa.70091","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T07:01:21Z","timestamp":1783062081000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/infa.70091"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5]]},"references-count":106,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,5]]}},"alternative-id":["10.1111\/infa.70091"],"URL":"https:\/\/doi.org\/10.1111\/infa.70091","archive":["Portico"],"relation":{},"ISSN":["1525-0008","1532-7078"],"issn-type":[{"value":"1525-0008","type":"print"},{"value":"1532-7078","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5]]},"assertion":[{"value":"2025-07-08","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-05","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-06-02","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70091"}}