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The first task aimed at obtaining a structural measure of the representation of the arm, specifically the two segments that compose it: the forearm and the hand. Participants were asked to localize three landmarks (elbow, wrist, and tip of the middle finger) while blindfolded and upon tactile stimulation of the three landmarks. The second task required a functional estimation of the represented length of the arm. Participants judged whether their arm fully outstretched would be long enough to touch an object presented at seven different distances without being allowed to perform the movement. The two tasks revealed opposite patterns of (mis\u2010)representation. At the structural level, the hand length was underestimated, while the forearm representation matched the actual size. This resulted in an underestimation of total arm length in the structural task. At the functional level, total arm length was overestimated across all age groups. Moreover, there was no relationship between estimates on the structural and functional tasks. These results support the coexistence of multiple, independent body representations in children.<\/jats:p>","DOI":"10.1111\/desc.70035","type":"journal-article","created":{"date-parts":[[2025,6,3]],"date-time":"2025-06-03T08:04:45Z","timestamp":1748937885000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Underestimation and Overestimation of Hand and Arm Length Coexist in Children"],"prefix":"10.1111","volume":"28","author":[{"given":"Lucilla","family":"Cardinali","sequence":"first","affiliation":[{"name":"Department of Cognition, Motion and Neuroscience Istituto Italiano di Tecnologia  Genoa Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristina","family":"Becchio","sequence":"additional","affiliation":[{"name":"Department of Cognition, Motion and Neuroscience Istituto Italiano di Tecnologia  Genoa Italy"},{"name":"Department of Neurology University Medical Center Hamburg\u2010Eppendorf  Hamburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9172-8838","authenticated-orcid":false,"given":"Lara","family":"Coelho","sequence":"additional","affiliation":[{"name":"U\u2010VIP (Unit for Visually Impaired People) Istituto Italiano di Tecnologia  Genoa Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monica","family":"Gori","sequence":"additional","affiliation":[{"name":"U\u2010VIP (Unit for Visually Impaired People) Istituto Italiano di Tecnologia  Genoa Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,6,3]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuropsychologia.2008.11.001"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tics.2022.09.010"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuropsychologia.2014.11.028"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/13803395.2020.1843603"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1207\/S15327078IN0102_1"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuropsychologia.2011.09.033"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-019-49500-7"},{"key":"e_1_2_9_9_1","first-page":"1","article-title":"Growing Into Your Hand: The Developmental Trajectory of the Body Model","author":"Coelho L. 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