- Attention Deficit Hyperactivity Disorder
- Neural and Behavioral Psychology Studies
- Cognitive Abilities and Testing
- Cognitive and developmental aspects of mathematical skills
- Children's Physical and Motor Development
- Educational and Psychological Assessments
- Reading and Literacy Development
- Child and Adolescent Psychosocial and Emotional Development
- Behavioral and Psychological Studies
- Traumatic Brain Injury Research
- Infant Development and Preterm Care
- Autism Spectrum Disorder Research
- Neurobiology of Language and Bilingualism
- Pregnancy and preeclampsia studies
- Cognitive Functions and Memory
- Early Childhood Education and Development
- Family and Disability Support Research
- Language Development and Disorders
- Cerebral Palsy and Movement Disorders
- Hemispheric Asymmetry in Neuroscience
- Child and Animal Learning Development
- Behavioral Health and Interventions
- Noise Effects and Management
- Neurological Complications and Syndromes
- Neuroscience and Music Perception
Maastricht University
2016-2025
Brain Innovation (Netherlands)
2024
Kempenhaeghe
2024
Maastricht University Medical Centre
2005-2022
National Pension Service
2016-2022
Chicago Neuropsychology Group
2013-2022
Bohn Stafleu van Loghum (Netherlands)
2021
Japan External Trade Organization
2011-2014
European Graduate School of Neuroscience
2009
The relation between cognitive and motor performance was studied in a sample of 378 children aged 5-6. Half these had no behavior problems; the others were selected for externalizing (38%) or internalizing problems (12%). Quantitative qualitative aspects related to several cognition, after controlling influence attention. No global found. Specific positive relations found both performance, visual integration working memory, quantitative fluency. These findings reveal interesting parallels...
We investigated age-related improvement in semantic category verbal fluency (VF) 309 Dutch schoolchildren attending first to ninth grade. Quantitative analyses of number correct responses as a function time well qualitative clustering and switching were conducted. Overall, VF task performance, i.e., over 60 seconds, was not established before mid-adolescence. This is line with previously published studies, using seconds the main outcome measure examining performance across other cultures...
Verbal fluency was operationalized as the number of words produced in a restricted category (i.e., semantic [SCF] and beginning with given letter [ILF]) 60 seconds. Word production first 15 seconds either type task defined measure automatic information processing, whereas word remaining 45 (in 15-second periods) taken controlled processing. Data revealed that over healthy children aged 8.4–9.7 years (n = 91) significantly more less incorrect responses on SCF than ILF task. Although function...
In this study, the authors aimed to examine 4 domains of executive functioning in adults with attention-deficit/hyperactivity disorder (ADHD)-namely interference control, concept shifting, verbal fluency, and working memory.Four groups participants were included: (a) diagnosed ADHD (ADHD Ϫ ; n ϭ 20), (b) both 1 or more comorbid disorder(s) ϩ 22), (c) referred for because symptomatology but not as such (non-ADHD; 34), (d) healthy controls (n 136).ADHD-related deficits (independent...
Abstract The Animal Verbal Fluency (AVF) and Design (DF) structured unstructured test versions were administered to N = 294 healthy native Dutch-speaking children who aged between 6.56 15.85 years. AVF DF scores increased linearly as a function of age, whilst the relation age score was curvilinear (i.e., improvement in much more pronounced for younger than older children). A higher mean level parental education associated with significantly scores. Sex not any outcomes. Demographically...
Introduction Sensory hypersensitivity (SHS) refers to an increased sensitivity sensory stimuli, often leading overload and adversely affecting daily functioning well-being. This study examined the effects of three situational triggers – noise, time pressure, cognitive load on task performance, overload, fatigue. Additionally, we sought explore associations between these SHS, while accounting for other influencing factors such as personality, coping mechanisms, anxiety.
This study explores the relationship between children's academic performance and their results on cognitive function tests. Traditionally, test scores often reflect overall accuracy or speed. Yet, these are influenced by both diverse executive functions (EF) non-EF processes. To isolate specific functions, alternative scoring methods have been developed, which aim to measure one more purely. We investigated whether combining traditional with claiming strategy use improves prediction of...
Importance Microdosing psychedelics, including lysergic acid diethylamide (LSD), has gained attention for its potential benefits in several psychiatric disorders, attention-deficit/hyperactivity disorder (ADHD). However, LSD’s efficacy reducing ADHD symptoms remains unknown. Objective To determine the safety and of repeated low doses LSD compared with placebo. Design, Setting, Participants This was a 6-week, multicenter, double-blind, placebo-controlled, parallel-group phase 2A randomized...
The scant research on the characteristics of Attention-Deficit/Hyperactivity Disorder (ADHD) in kindergarten years curtails progress early assessment ADHD.By screening a general population sample 1317 five- to six-year-old children, four groups children were selected. performance 30 later diagnosed with ADHD was compared 74 'borderline ADHD' (children exhibiting all symptoms but without disruptions two situations), 113 other psychopathology, and 126 healthy controls computerised motor...
The early assessment of Attention-Deficit/Hyperactivity Disorder (ADHD) children has mainly focused on the behavioral, social, and pre-academic impairments. This study examined whether 5 to 6-year-old at risk ADHD are characterized by information-processing deficits. By screening 1,317 in Southern Limburg (the Netherlands) with Child Behavior Checklist, 363 were selected underwent a computerized examination. Eighteen months later, standardized psychiatric information was obtained....
Objective: To examine the specificity of deficits in focused attention and sustained adults with ADHD to evaluate effect comorbidity. Method: Twenty-eight without comorbidity were compared 28 outpatients Two control groups used: 68 referred for but another psychopathology rather than (non-ADHD) healthy controls. All participants completed tests Amsterdam Neuropsychological Tasks program. Results: Both demonstrated a deficit relative groups, as indicated by disproportionate deterioration...
Objective:The main aim of the study was to examine blood oxygen level-dependent response during task switching in adults with attention-deficit/hyperactivity disorder (ADHD).Method: Fifteen male ADHD and 14 controls participated performed a task-switching paradigm.Results: Behaviorally, no specific executive control problems were observed participants, although they did display more errors general.The neuroimaging data show remarkable differences between adults: Adults engaged strongly...
Abstract Although mechanical combination results in more valid human performance predictions and decisions than holistic combination, existing publications suggest that is rarely used practice. Yet, these are either descriptions of anecdotal experiences or outdated surveys. Therefore, several Western countries, we conducted two surveys (total N = 323) focus groups to investigate (1) how decision makers psychological assessment resource practice combine information, (2) why they do (not) use...
The development of three aspects selective attention was studied in 451 Dutch schoolchildren attending second to sixth grade. Selective measured with the d2 Test attention. largest age differences were found for processing speed that continued improve until Impulsivity, as by percentage errors commission, decreased fourth Inattention, omission, stable all grades. Processing and impulsivity correlated score on Attention Problems subscale Child Behavior Checklist. These results imply continues...
Time estimation is believed to be an adaptive function in human life. In the present study, prospective and retrospective time are studied both clinical-referred school-aged children with ADHD-C healthy community control children, while examining more specifically effects of type task, length intervals (i.e., ranging from 3-90 s), continuous scaling main ADHD symptom clusters inattention vs. hyperactivity/impulsiveness). On a verbal test, showed significant overestimation compared controls....
The assessment of intellectual abilities is intensive, time-consuming, and might be considered burdensome for patients. We examined psychometric qualities short forms (SFs) the Wechsler Intelligence Scales Children (WISC-third edition) adults (WAIS-fourth edition), in children (n = 986; Mage 10.9) 324; 40.9) with neurological disorders. SF estimates were compared Full Scale IQ (FSIQ), obtained by a complete administration, entire sample subgroups FSIQ < 80 ≥ 80. was correctly identified...
A computer-based game, named Timo's Adventure, was developed to assess specific cognitive functions (eg, attention, planning, and working memory), time perception, reward mechanisms in young school-aged children. The game consists of 6 mini-games embedded a story line includes fantasy elements enhance motivation.The aim this study investigate the validity Adventure normally developing children with attention-deficit/hyperactivity disorder (ADHD).A total 96 aged 4-8 years 40 ADHD were...
Objective: To evaluate longitudinal associations between recreational screen time and sleep in early childhood, attention-deficit/hyperactivity disorder (ADHD) at age 8 to 10 years. Method: Questionnaires from 2,768 mother-child pairs the Dutch KOALA Birth Cohort Study were used. General estimating equation logistic regression analyses examined 2, 4, 6, ADHD 10. Linear analysis television time, CBCL/2-3 scores 2. Results: Longitudinally, neither nor associated with ADHD. Cross-sectionally,...