Background: According to Self-Determination Theory (SDT), motivation is inherently present in every individual, growing from amotivation via controlled to autonomous motivation, through fulfilment of the basic psychological needs for autonomy, competence and relatedness. Peer relatedness has been found to influence motivation multimodally.…

Introduction: Family members are often the main provider of informal support to people with mild intellectual disabilities. In the current study, we explored whether their family-based social capital is prospectively associated with their wellbeing and emotional and behavioral problems. Methods: Sixty-nine participants with mild intellectual…

Studies on the impact of the COVID-19 pandemic on autistic children's psychosocial outcomes have shown mixed results. In the current study we aimed to gain a better insight into the effect of the COVID-19 pandemic by comparing psychosocial outcomes collected pre-pandemic with data collected during the pandemic. We used the Strengths and…

Obsessive-compulsive disorder (OCD) and autism are characterized by the presence of repetitive behaviors. Differentiating between repetitive behaviors attributable to a diagnosis of autism, and those attributable to OCD, poses challenges for differential and co-occurring diagnosis. Differentiation is important to inform appropriate supports and…

Introduction: Children of parents with mental health concerns are at-risk for social-emotional problems. In this study, we assessed whether children with a mild intellectual disability and parents with mental health concerns are particularly at-risk. Method: Strengths and Difficulties Questionnaire (SDQ) reports of children with a mild…

Acknowledging that the parent-child attachment is a dyadic relationship, we investigated differences between pairs of parents and preschool children based on gender configurations in the association between attachment and problem behavior. We looked at mother-daughter, mother-son, father-daughter, and father-son dyads, but also compared mothers…

Background: The Family Network Method -- Intellectual Disability (FNM-ID) was used to compare perspectives of people with mild intellectual disability and their support workers on family networks of people with intellectual disability. Method: 138 participants with mild intellectual disability and support workers were interviewed, using the…

This study investigated associations of the Incredible Years (IY) parenting program with children's DNA methylation. Participants were 289 Dutch children aged 3-9 years (75% European ancestry, 48% female) with above-average conduct problems. Saliva was collected 2.5 years after families were randomized to IY or care as usual (CAU). Using an…

Background: Children with mild intellectual disabilities and emotional and behavioural problems whose parents have mental health concerns are at an increased risk of developing problems themselves. This study analysed the effectiveness of the 'You are Okay'-program aimed to support these children and parents and to reduce the risk of problem…

There has been an increased focus on listening to students' voices in inclusive education in the last decade. To ensure the right of students to be heard and educational needs can be met in the Dutch education system, we set up a qualitative study to gain more insight into: 1) the problems that students experience at school, 2) how and from whom…

Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in…

Introduction: Adults with intellectual disabilities have an increased vulnerability to mental health problems and challenging behaviour. In addition to psychotherapeutic or psychoeducational methods, off-label pharmacotherapy, is a commonly used treatment modality. Objective: The aim of this study was to establish evidence-based guideline…

Children with autism spectrum disorder are at risk of developing internalizing and externalizing problems. However, information on early development of behavior problems and the contributing role of emotional functioning in preschool children with autism spectrum disorder is scarce. This study collected data of boys with and without autism…

There has been little attention to personality in research on school refusal (SR). This study examined personality traits among 41 adolescents receiving cognitive-behavioral therapy (CBT) during participation in a School Refusal Program in the Netherlands. Traits were examined via clinical scales and 2-point code types derived from the Minnesota…

Objective: This cross-sectional study investigated social opportunities in children at risk for ADHD in regular primary education classrooms. First, we aimed to compare social preference of children at risk for ADHD and of their unilateral friends, with their classmates. Second, we hypothesized that for the at risk-group higher levels of problem…