{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T10:57:25Z","timestamp":1775645845943,"version":"3.50.1"},"reference-count":51,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2022,10,14]],"date-time":"2022-10-14T00:00:00Z","timestamp":1665705600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FCT\u2014Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (Foundation for Science and Technology)","award":["UIDB\/04345\/2020"],"award-info":[{"award-number":["UIDB\/04345\/2020"]}]},{"name":"Psychology Research Centre (CIP) of Universidade Aut\u00f3noma de Lisboa\/Universidade do Algarve","award":["UIDB\/04345\/2020"],"award-info":[{"award-number":["UIDB\/04345\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>The aim of this study is to examine the relationship between chronotype, classroom behaviour and school performance in 140 healthy school-age children attending various levels of education during the 1st cycle during 2021 in Portugal. In this cross-sectional and quantitative study, the Chronotype Questionnaire for Children (to assess the chronotype) and the Conners Scale\u2014a reduced version was presented to the teachers (to assess behaviours such as excessive movement, inattention and oppositional behaviours)\u2014were used. The methodology of this study followed a comparative method since the independent variables were not controlled, and therefore, it was still possible to compare the differences between the morning and evening groups. Statistical methods were used such as multivariate analyses, inter-item correlations and reliability tests, and descriptive tests were used for the percentile analysis. The sample was divided into three groups based on the identification of the chronotype\u2014morning, intermediate and evening types\u2014to further study the relationship between these chronotypes, their academic performance and classroom behaviour were studied. A multivariate analysis of variance revealed that there was a higher rate of oppositional behaviour in the morning type and no differences in the school performance during the two semesters (covering all of the school periods) regarding the chronotype effect, even with the analysis of regression parameters and covariates. On the other hand, the morning-type children showed a greater amount of motor agitation and impulsivity after controlling for the gender covariate. Age had an effect on the chronotype, after controlling for the covariate parental education. This study highlights the need for further research on the chronotype of the morning children in order to regulate their behaviour. The data that were obtained raise questions that have not been yet considered in the literature in the area of education and infant development.<\/jats:p>","DOI":"10.3390\/ijerph192013233","type":"journal-article","created":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T00:04:55Z","timestamp":1665965095000},"page":"13233","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["The Effect of Chronotype on Oppositional Behaviour and Psychomotor Agitation of School-Age Children: A Cross-Sectional Study"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5152-4467","authenticated-orcid":false,"given":"Sandra","family":"Figueiredo","sequence":"first","affiliation":[{"name":"Department of Psychology of Universidade Aut\u00f3noma de Lisboa, Coordinator Researcher in Psychology Research Centre (CIP) and of Foundation for Science and Technology, 1169-023 Lisbon, Portugal"}]},{"given":"Rayane","family":"Vieira","sequence":"additional","affiliation":[{"name":"Department of Psychology, Universidade Aut\u00f3noma de Lisboa, 1169-023 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,14]]},"reference":[{"key":"ref_1","first-page":"37","article-title":"Chronotype and time-of-day effects on mood during school day","volume":"32","author":"Escribano","year":"2014","journal-title":"Chronobiol. Int."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Gowen, R., Filipowicz, A., and Ingram, K.K. (2019). Chronotype mediates gender differences in risk propensity and risk-taking. PLoS ONE, 14.","DOI":"10.1371\/journal.pone.0216619"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"113722","DOI":"10.1016\/j.psychres.2021.113722","article-title":"The effect of age and chronotype on seasonality, sleep problems, and mood","volume":"297","author":"Heimisson","year":"2021","journal-title":"Psychiatry Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"e20161406","DOI":"10.1542\/peds.2016-1406","article-title":"Self-Regulation and Sleep Duration, Sleepiness, and Chronotype in Adolescents","volume":"138","author":"Owens","year":"2016","journal-title":"Pediatrics"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1267","DOI":"10.1080\/14756366.2020.1772249","article-title":"Recent advances in modulators of circadian rhythms: An update and perspective","volume":"35","author":"Huang","year":"2020","journal-title":"J. Enzym. Inhib. Med. Chem."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Mazri, F.H., Manaf, Z.A., Shahar, S., and Mat Ludin, A.F. (2019). The Association between Chronotype and Dietary Pattern among Adults: A Scoping Review. Int. J. Environ. Res. Public Health, 17.","DOI":"10.3390\/ijerph17010068"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1016\/j.smrv.2016.06.007","article-title":"Chronotype and circadian rhythm in bipolar disorder: A systematic review","volume":"34","author":"Melo","year":"2017","journal-title":"Sleep Med. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1177","DOI":"10.1158\/1055-9965.EPI-18-1018","article-title":"Shift Work, Chronotype, and Melatonin Rhythm in Nurses","volume":"28","author":"Razavi","year":"2019","journal-title":"Cancer Epidemiol. Biomark. Prev."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"408","DOI":"10.1111\/j.1467-7687.2012.01137.x","article-title":"Circadian rhythms in executive function during the transition to adolescence: The effect of synchrony between chronotype and time of day","volume":"15","author":"Hahn","year":"2012","journal-title":"Dev. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4672","DOI":"10.1038\/s41467-021-24885-0","article-title":"Cognitive functions and underlying parameters of human brain physiology are associated with chronotype","volume":"12","author":"Salehinejad","year":"2021","journal-title":"Nat. Commun."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3109\/07420528.2013.829846","article-title":"Chronotype-related differences in childhood and adolescent aggression and antisocial behaviour\u2013A review of the literature","volume":"31","author":"Schlarb","year":"2014","journal-title":"Chronobiol. Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"863","DOI":"10.1080\/07420528.2016.1176927","article-title":"Chronotype, gender and general health","volume":"33","author":"Fabbian","year":"2016","journal-title":"Chronobiol. Int."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"680","DOI":"10.1016\/j.sleep.2010.12.017","article-title":"Relation between morningness\u2013eveningness score and depressive symptoms among patients with delayed sleep phase syndrome","volume":"12","author":"Abe","year":"2011","journal-title":"Sleep Med."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"646","DOI":"10.1590\/S0004-282X2008000500008","article-title":"Control of psychomotor agitation and aggressive behaviour in patients with autistic disorder: A retrospective chart review","volume":"66","author":"Novaes","year":"2008","journal-title":"Arq. De Neuro-Psiquiatr."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"752","DOI":"10.1097\/01.chi.0000121065.29744.d3","article-title":"Generalized Anxiety Disorder in Referred Children and Adolescents","volume":"43","author":"Masi","year":"2004","journal-title":"J. Am. Acad. Child Adolesc. Psychiatry"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/j.arcped.2022.02.005","article-title":"Sleep, chronotype, and behavior in adolescents with attention-deficit\/hyperactivity disorder","volume":"29","author":"Pozo","year":"2022","journal-title":"Archives De P\u00e9diatrie"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"113988","DOI":"10.1016\/j.psychres.2021.113988","article-title":"Beyond motor hyperactivity: Racing thoughts are an integral symptom of adult attention deficit hyperactivity disorder","volume":"301","author":"Martz","year":"2021","journal-title":"Psychiatry Res."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1248","DOI":"10.1080\/07420528.2018.1470531","article-title":"Chronotype and depressive symptoms in students: An investigation of possible mechanisms","volume":"35","author":"Berg","year":"2018","journal-title":"Chronobiol. Int."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1049","DOI":"10.1001\/jamapediatrics.2019.3089","article-title":"Chronotype, Social Jet Lag, and Cardiometabolic Risk Factors in Early Adolescence","volume":"173","author":"Feliciano","year":"2019","journal-title":"JAMA Pediatr."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"987","DOI":"10.1016\/j.biopsych.2017.11.035","article-title":"Impact of Sleep and Circadian Rhythms on Addiction Vulnerability in Adolescents","volume":"83","author":"Logan","year":"2018","journal-title":"Biol. Psychiatry"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"387","DOI":"10.1038\/s41562-020-0820-2","article-title":"Interplay of chronotype and school timing predicts school performance","volume":"4","author":"Goldin","year":"2020","journal-title":"Nat. Hum. Behav."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"497","DOI":"10.1080\/07420520500545979","article-title":"Social Jetlag: Misalignment of Biological and Social Time","volume":"23","author":"Wittmann","year":"2006","journal-title":"Chronobiol. Int."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1002\/pchj.178","article-title":"Time to learn: How chronotype impacts education","volume":"6","author":"Zerbini","year":"2017","journal-title":"PsyCh J."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"e13401","DOI":"10.1111\/jsr.13401","article-title":"Adolescents\u2019 preference for later school start times","volume":"31","author":"Werner","year":"2021","journal-title":"J. Sleep Res."},{"key":"ref_25","unstructured":"Couto, D.A. (2007). Chronotype Questionnaire for Children: Portuguese Adaptation of the Children\u2019s Chronotype Questionnaire. [Master\u2019s Thesis, University of Aveiro]."},{"key":"ref_26","first-page":"160","article-title":"The European Portuguese version of the Children ChronoType Questionnaire (CCTQ): Reliability and raw scores in a large continental sample","volume":"23","author":"Couto","year":"2014","journal-title":"J. Sleep Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1016\/j.smrv.2007.07.005","article-title":"Epidemiology of the human circadian clock","volume":"11","author":"Roenneberg","year":"2007","journal-title":"Sleep Med. Rev."},{"key":"ref_28","first-page":"367","article-title":"Validation of the French version of Children\u2019s Chronotype Questionnaire in school-aged children: A study in Luxembourgish population","volume":"27","author":"Figueiredo","year":"2018","journal-title":"J. Sleep Res."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1023\/A:1022602400621","article-title":"The Revised Conners\u2019 Parent Rating Scale (CPRS-R): Factor Structure, Reliability, and Criterion Validity","volume":"26","author":"Conners","year":"1998","journal-title":"J. Abnorm. Child Psychol."},{"key":"ref_30","first-page":"71","article-title":"Contributes for the utilization of the Conners Scales (1997) in the evaluation process of PHDA\u2014(Part I)","volume":"12","author":"Rodrigues","year":"2005","journal-title":"Revista de Educa\u00e7\u00e3o Especial e Reabilita\u00e7\u00e3o"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"607","DOI":"10.1080\/07420520600650646","article-title":"Morning-Evening Preference: Sleep Pattern Spectrum and Lifestyle Habits Among Japanese Junior High School Pupils","volume":"23","author":"Gaina","year":"2006","journal-title":"Chronobiol. Int."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1083","DOI":"10.1016\/S0191-8869(01)00214-8","article-title":"Children\u2019s time of day preference: Age, gender and ethnic differences","volume":"33","author":"Kim","year":"2022","journal-title":"Personal. Individ. Differ."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"16747","DOI":"10.1038\/s41598-020-73297-5","article-title":"Evening types have social jet lag and metabolic alterations in school-age children","volume":"10","author":"Barraco","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1016\/j.sleep.2016.11.015","article-title":"The association between chronotype and sleep problems in preschool children","volume":"30","author":"Jafar","year":"2016","journal-title":"Sleep Med."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"94","DOI":"10.1007\/s40675-018-0113-8","article-title":"Chronotype and Psychiatric Disorders","volume":"4","author":"Papadopoulos","year":"2018","journal-title":"Curr. Sleep Med. Rep."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"431","DOI":"10.1016\/j.paid.2006.07.008","article-title":"Time of day, intellectual performance, and behavioural problems in morning versus evening type adolescents: Is there a synchrony effect?","volume":"42","author":"Goldstein","year":"2007","journal-title":"Personal. Individ. Differ."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"836","DOI":"10.1016\/j.paid.2012.12.021","article-title":"The Chronotype-Academic Performance Model (CAM): Daytime sleepiness and learning motivation link chronotype and school performance in adolescents","volume":"54","author":"Roeser","year":"2013","journal-title":"Pers. Individ. Differ."},{"key":"ref_38","first-page":"480","article-title":"Morningness-eveningness is not associated with academic performance in the afternoon school shift: Preliminary findings","volume":"88","year":"2017","journal-title":"Br. J. Educ. Psychol."},{"key":"ref_39","first-page":"54","article-title":"Chronotype and Time of Day Do Not Influence Mathematical Achievement \u0130n Standardised Tests, But Impact on Affect\u2014Results from A Field Experiment","volume":"8","author":"Randler","year":"2016","journal-title":"Int. Online J. Educ. Sci."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"235","DOI":"10.3109\/07420528.2014.965313","article-title":"Circadian preference and trait impulsivity, sensation-seeking and response inhibition in healthy young adults","volume":"32","author":"Kang","year":"2014","journal-title":"Chronobiol. Int."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"213","DOI":"10.2466\/PMS.93.5.213-229","article-title":"Effects of acute sleep restriction on behaviour, sustained attention, and response inhibition in children","volume":"93","author":"Fallone","year":"2001","journal-title":"Percept. Mot. Ski."},{"key":"ref_42","first-page":"54","article-title":"Evaluation of the Relationship between Attention Deficit Hyperactivity Disorder Symptoms and Chronotype","volume":"55","author":"Tarakcioglu","year":"2017","journal-title":"Arch. Neuropsychiatry"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1207","DOI":"10.1080\/07420528.2020.1792485","article-title":"The relationship between chronotype, sleep, and autism symptom severity in children with ASD in COVID-19 home confinement period","volume":"37","author":"Tezcan","year":"2020","journal-title":"Chronobiol. Int."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.sleep.2018.08.028","article-title":"Excessive daytime sleepiness among children and adolescents: Prevalence, correlates, and pubertal effects","volume":"53","author":"Liu","year":"2018","journal-title":"Sleep Med."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"628","DOI":"10.1007\/s10964-021-01407-1","article-title":"Sleep\u2013Wake Timings in Adolescence: Chronotype Development and Associations with Adjustment","volume":"50","author":"Karan","year":"2021","journal-title":"J. Youth Adolesc."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"95","DOI":"10.3390\/adolescents1020008","article-title":"Role of Living Conditions and Socioenvironmental Factors on Chronotype in Adolescents","volume":"1","author":"Haldar","year":"2021","journal-title":"Adolescents"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"349","DOI":"10.3109\/07420528.2014.980508","article-title":"The influence of chronotype and intelligence on academic achievement in primary school is mediated by conscientiousness, midpoint of sleep and motivation","volume":"32","author":"Arbabi","year":"2014","journal-title":"Chronobiol. Int."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1016\/j.eurpsy.2014.01.004","article-title":"Composite Scale of Morningness: Psychometric properties, validity with Munich ChronoType Questionnaire and age\/sex differences in Poland","volume":"30","author":"Jankowski","year":"2015","journal-title":"Eur. Psychiatry"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1118","DOI":"10.1016\/j.jad.2021.08.095","article-title":"Chronotype changes with age; seven-year follow-up from the Netherlands study of depression and anxiety cohort","volume":"295","author":"Druiven","year":"2021","journal-title":"J. Affect. Disord."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"1236","DOI":"10.1177\/1359105317751618","article-title":"Chronotype is associated with psychological well-being depending on the composition of the study sample","volume":"25","author":"Dimitrov","year":"2018","journal-title":"J. Health Psychol."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1419","DOI":"10.1038\/s41598-020-58413-9","article-title":"Chronotype assessment via a large scale socio-demographic survey favours yearlong Standard time over Daylight Saving Time in central Europe","volume":"10","year":"2020","journal-title":"Sci. Rep."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/20\/13233\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:53:59Z","timestamp":1760144039000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/20\/13233"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,14]]},"references-count":51,"journal-issue":{"issue":"20","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["ijerph192013233"],"URL":"https:\/\/doi.org\/10.3390\/ijerph192013233","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,14]]}}}