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A total of 138 adolescents (57 boys and 81 girls) aged 12\u201313\u2009years, who in addition to completing the Morningness\u2013Eveningness Scale for Children to determine their circadian typology wore a wrist activity device (Kronowise 3.0; Kronohealth SL) during school days and a weekend, participated. Circadian parameters, such as mesor, amplitude and acrophase, were estimated for skin temperature, light exposure and motor activity, as were sleep parameters, such as risetime, bedtime and social jetlag. The results indicated that during the weekend E\u2010type adolescents experienced later acrophases in temperature, light and activity than I\u2010type and M\u2010type adolescents did, whereas boys experienced earlier acrophases in temperature and activity. When school weekdays were compared with the weekend, there was a weekend delay in the acrophases of temperature (1:03), light exposure (2:03) and activity (3:15). The results obtained in this study provide external validity for applying the Morningness\u2013Eveningness Scale for Children in the naturalistic context of high school while considering sex and type\u2010of\u2010day differences as important variables in chronopsychological studies.<\/jats:p>","DOI":"10.1111\/jsr.14444","type":"journal-article","created":{"date-parts":[[2025,1,2]],"date-time":"2025-01-02T19:42:44Z","timestamp":1735846964000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Validation of the Morningness\u2013Eveningness Scale for Children (\n                    <scp>MESC<\/scp>\n                    ) with ambulatory circadian monitoring of temperature, light exposure and activity"],"prefix":"10.1111","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9936-4108","authenticated-orcid":false,"given":"Yaiza","family":"Puig\u2010Navarro","sequence":"first","affiliation":[{"name":"Individual Differences, Work and Social Psychology Department Complutense University of Madrid; R&amp;D department, Hogrefe TEA Ediciones  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3894-7908","authenticated-orcid":false,"given":"Juan F.","family":"D\u00edaz\u2010Morales","sequence":"additional","affiliation":[{"name":"Individual Differences, Work and Social Psychology Department Complutense University of Madrid  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,1,2]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.3109\/07420528.2012.719971"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/mbe.12059"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/07420528.2020.1798978"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/16.3.258"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1037\/14805-018"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2015-2775"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.paid.2015.07.027"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.6018\/analesps.30.3.167941"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.adolescence.2014.03.011"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10964-022-01708-z"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2869.1999.00183.x"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/jsr.13501"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/annweh\/wxaa004"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41562-020-0820-2"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2010.11.008"},{"key":"e_1_2_9_17_1","volume-title":"IBM SPSS statistics for windows, version 25.0","author":"IBM Corp","year":"2017"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1080\/07420528.2017.1299162"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpsychires.2022.04.024"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.3389\/fpsyt.2022.785079"},{"key":"e_1_2_9_21_1","volume-title":"CAT: Chronomics analysis toolkit","author":"Lee Gierke C.","year":"2013"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.3109\/07420528.2013.867864"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.3389\/fneur.2018.00157"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.3389\/fneur.2019.00356"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1177\/0748730415625510"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.3109\/07420528.2013.861845"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphys.2019.01396"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.3390\/biom11040487"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physbeh.2013.12.009"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1111\/jsr.13576"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleh.2017.07.011"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.3390\/children10050819"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.3109\/07420528.2010.516381"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.12775\/mbs.2014.016"},{"key":"e_1_2_9_35_1","volume-title":"The relevance of morning affect, eveningness and distinctness in regard to the mental health of adolescents","author":"Puig\u2010Navarro","year":"2024"},{"key":"e_1_2_9_36_1","volume-title":"R: A language and environment for statistical computing","author":"R Core Team","year":"2019"},{"key":"e_1_2_9_37_1","volume-title":"RStudio: Integrated Development for R. 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