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: 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…

While environmental problems are urgent in modern society, they are especially difficult to tackle because of their normative and politically controversial nature. Universities may choose different theoretical paradigms for the teaching of environmental problems. However, limited theoretical and/or practical analysis has been undertaken of the…

Autism spectrum disorder and anxiety are highly comorbid conditions. Understanding the underlying traits of anxiety in autism spectrum disorder is crucial to prevent and treat it efficiently. Hence, this study determined whether social communication difficulties or restricted repetitive behaviors are stronger risk factors for anxiety symptoms in…

This study aimed to assess physiological arousal and behavioral regulation of emotion in the context of frustration in 29 children with Autism Spectrum Disorders (ASD) and 45 typically developing children (41-81 months). Heart rate was continuously measured and emotion strategies were coded, during a locked-box task. Results revealed increases in…

Teaching children with psychiatric disorders can be a challenging task. The purpose of this study was to examine the impact of the Good Behavior Game (GBG) in children with psychiatric disorders, and their teachers, in special education. Teachers were trained by licensed school consultants to implement positive behavior support strategies to…

Background: Changing demographics in societies through international migration have led to an increasing number of bi-ethnic individuals. The focus of this study is on bi-ethnic students with one parent with an ethnic majority background and one parent with an ethnic minority background. Most studies worldwide have grouped these bi-ethnic students…

Children with autism spectrum disorder (ASD) have particular difficulty with behavioral flexibility, but the knowledge base on behavioral flexibility in children with a diagnosis of ASD plus intellectual disability (ID) compared to children with ID only is still scarce. The aim of the present study was to assess behavioral flexibility in 111…

Background: People with intellectual disabilities face barriers that affect their sexual health. Sex education programmes have been developed by professionals working in the field of intellectual disabilities with the aim to overcome these barriers. The aim of this study was to explore the development of these programmes. Methods: Sex education…

This study reports on the development and validation of an abridged version of the 50-item Autism-Spectrum Quotient (AQ), a self-report measure of autistic traits. We aimed to reduce the number of items whilst retaining high validity and a meaningful factor structure. The item reduction procedure was performed on data from 1,263 Dutch students and…

To determine maternal stress and child variables predicting maternal stress, 104 mothers of children with autism spectrum disorder (ASD) and intellectual disability (ID) completed the Dutch version of the Parental Stress Index (PSI; De Brock, Vermulst, Gerris, & Abidin, 1992) every six months over a period of two years. The level of maternal…

The present study examines the validity of the Dutch Children's Communication Checklist (CCC) for children in kindergarten in a community sample, in order to assess the feasibility of using it as a screening instrument in the general population. Teachers completed the CCC for a representative sample of 1396 children at kindergarten level, taken…

Analysis of parent and teacher Developmental Behavior Checklist (DBC) ratings on a combined sample of 1,536 Dutch and Australian children (ages 3-22) with mild to profound intellectual disabilities produced five subscales: Disruptive/Antisocial, Self-Absorbed, Communication Disturbance, Anxiety, and Social Relating. Internal consistency of the…

Offers a conceptual model based on two encompassing perspectives: (1) negotiating as a set of dilemmas that are derived from the "cooperation-fighting" polarity and (2) negotiating as a composition of four kinds of activities, each connected to a different intention. (Author)

In a survey study, we investigated teacher attitudes toward acceleration and accelerated students in the Netherlands. Teachers (N = 334) from 31 secondary schools gave their opinion about gifted education and acceleration, and evaluated statements about accelerated students. Most teachers considered a special approach for gifted students advisable…