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…

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…

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…

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…

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…

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…

To explore associations between autism traits and family functioning over time, we studied longitudinal data of a mixed group of 168 clinically referred autistic and non-autistic children. Cross-lagged models showed a significant association between fewer autism traits at the diagnostic assessment and better family functioning 1 year later for the…

The tacit practical knowledge of psychologists and support staff to foster a real connection between support staff and people with intellectual disabilities and challenging behaviour was explored. Therefore, six dyads comprising individuals with intellectual disabilities and challenging behaviour and their support staff were video recorded during…

This preregistered study examined whether child temperament and executive functions moderated the longitudinal association between early life stress (ELS) and behavior problems. In a Dutch population-based cohort (n = 2803), parents reported on multiple stressors (age 0-6 years), child temperament (age 5), and executive functions (age 4), and…

Background: Aggressive behaviour (AB) and non-suicidal self-injury (NSSI) are common in people with mild intellectual disability or borderline intellectual functioning, leading to adverse consequences for themselves and those around them. Method: We investigated the relationship between AB (both total and physical in particular) and NSSI and risk…