Sleep duration and chronotype are known to have an influence on inhibitory control in adolescents. To date, there are no studies that have looked into this relationship in in school age children ....Show moreSleep duration and chronotype are known to have an influence on inhibitory control in adolescents. To date, there are no studies that have looked into this relationship in in school age children . The question in this research is, is the relationship between chronotype and inhibition mediated by sleep duration in children between the age of 9 and 11 years old? The sample included 594 children between 9 and 11 years old (M=10.48, SD=.82). There were 227 boys and 263 girls (from 104 children gender was unknown). Three instruments have been used; the first instrument was the Children's ChronoType Questionnaire (CCTQ). This questionnaire measures whether the child would a morning type or an evening type. The second instrument was a sleep diary. This sleep diary measures different elements of sleep, for this study the average sleep duration was used. The last instrument that was used, was the inhibition Psychomotor Vigilance Task GoNogo (PVT GoNogo). This instrument measures inhibition with the percentage of correct Nogo's. In this study, chronotype did not serve as a significant predictor for inhibition. In addition, chronotype did not serve as a significant predictor for sleep duration. However, sleep duration did serve as a significant predictor for inhibition (β =.12, t(459) = 2.48, p =.014). Longer duration of sleep was correlated to better inhibition. There was no evidence for sleep duration as a mediator between chronotype and inhibition in children between the age of 9 and 11 years old. Information on the influence of sleep on inhibition problems can be valuable to both professionals and parents. Sleeping problems should also be considered, when there are inhibition problems.Show less
Vrijwel alle jongens vertonen weleens dwars, opstandig of agressief gedrag. Een klein deel van deze jongens vertoont dit gedrag echter zo vaak dat er sprake is van een oppositioneel opstandige- of...Show moreVrijwel alle jongens vertonen weleens dwars, opstandig of agressief gedrag. Een klein deel van deze jongens vertoont dit gedrag echter zo vaak dat er sprake is van een oppositioneel opstandige- of antisociale gedragsstoornis (ODD of CD). In dit onderzoek werd nagegaan in hoeverre er een verband is tussen ODD/CD en prosociaal gedrag en tussen ODD/CD en taalvaardigheid bij jongens tussen de acht en twaalf jaar. Daarnaast is onderzocht in hoeverre de samenhang tussen de taalvaardigheid en het prosociale gedrag beïnvloed wordt door het wel of niet hebben van ODD/CD. In totaal zijn 38 jongens onderzocht: 21 jongens zonder ODD/CD en 17 met ODD/CD. De jongens waren tussen de 7.8 en 12.4 jaar oud, met een gemiddelde leeftijd van 10,0. Taalvaardigheid werd in dit onderzoek gemeten met de CELF- woordassociaties, de CELF- zinnen formuleren, de CELF - begrippen en aanwijzingen volgen en de NEPSY-IINL. De mate van prosociaal gedrag werd gemeten met de SSRS (Social Skills Rating System).Show less
