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Direct linkMaanen, Annette; Dewald-Kaufmann, Julia F.; Oort, Frans J.; de Bruin, Eduard J.; Smits, Marcel G.; Short, Michelle A.; Gradisar, Michael; Kerkhof, Gerard A.; Meijer, Anne Marie – Child & Youth Care Forum, 2014
Background: Sleep reduction, resulting from insufficient or poor sleep, is a common phenomenon in adolescents. Due to its severe negative psychological and behavioral daytime consequences, it is important to have a short reliable and valid measure to assess symptoms of sleep reduction. Objective: This study aims to validate the Sleep Reduction…
Descriptors: Sleep, Adolescents, Measurement Techniques, Questionnaires
Maas, Anneke P. H. M.; Didden, Robert; Korzilius, Hubert; Braam, Wiebe; Collin, Philippe; Smits, Marcel G.; Curfs, Leopold M. G. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
We examined the psychometric properties of one part of the Sleep Questionnaire developed by Simonds and Parraga (SQ-SP; 1982), a questionnaire that is frequently used to explore sleep problems and behaviors related to sleep in individuals with intellectual disability (ID). The SQ-SP was completed for 345 individuals with ID (sleep clinic n = 146;…
Descriptors: Control Groups, Mental Retardation, Validity, Sleep
Braam, W.; van Geijlswijk, I.; Keijzer, Henry; Smits, Marcel G.; Didden, Robert; Curfs, Leopold M. G. – Journal of Intellectual Disability Research, 2010
Background: In some of our patients with intellectual disability (ID) and sleep problems, the initial good response to melatonin disappeared within a few weeks after starting treatment, while the good response returned only after considerable dose reduction. The cause for this loss of response to melatonin is yet unknown. We hypothesise that this…
Descriptors: Metabolism, Mental Retardation, Sleep, Older Adults
Braam, Wiebe; Smits, Marcel G.; Didden, Robert; Korzilius, Hubert; van Geijlswijk, Ingeborg M.; Curfs, Leopold M. G. – Developmental Medicine & Child Neurology, 2009
Recent meta-analyses on melatonin has raised doubts as to whether melatonin is effective in treating sleep problems in people without intellectual disabilities. This is in contrast to results of several trials on melatonin in treating sleep problems in individuals with intellectual disabilities. To investigate the efficacy of melatonin in treating…
Descriptors: Mental Retardation, Sleep, Meta Analysis, Drug Therapy
Maas, Anneke P. H. M.; Didden, Robert; Bouts, Lex; Smits, Marcel G.; Curfs, Leopold M. G. – Research in Developmental Disabilities: A Multidisciplinary Journal, 2009
Individuals with Prader-Willi syndrome (PWS) are at risk for excessive daytime sleepiness (EDS) and disruptive behavior. This pilot study explores temporal characteristics of EDS and severe disruptive behavior across time of day and day of week in seven individuals with PWS (aged between 33 and 49 years) of whom five were matched to controls.…
Descriptors: Mental Retardation, Risk, Sleep, Behavior Problems
Van der Heijden, Kristiaan B.; Smits, Marcel G.; Van Someren, Eus J. W.; Ridderinkhof, K. Richard; Gunning, W. Boudewijn – Journal of the American Academy of Child and Adolescent Psychiatry, 2007
Objective: To investigate the effect of melatonin treatment on sleep, behavior, cognition, and quality of life in children with attention-deficit/hyperactivity disorder (ADHD) and chronic sleep onset insomnia. Method: A total of 105 medication-free children, ages 6 to 12 years, with rigorously diagnosed ADHD and chronic sleep onset insomnia…
Descriptors: Quality of Life, Hyperactivity, Body Weight, Sleep
Didden, Robert; Korzilius, Hubert; Smits, Marcel G.; Curfs, Leopold M. G. – American Journal on Mental Retardation, 2004
Prevalence of severe sleep problems and its association with other variables were investigated with 109 individuals who have Angelman syndrome. Severe settling problems, frequent night waking, and early waking were found in 2%, 37%, and 10% of the individuals, respectively. Sleep problems were persistent in this sample. No statistically…
Descriptors: Sleep, Incidence, Behavior Problems, Neurological Impairments
