The current study evaluated a brief, informant-based autism interview: the Developmental, Dimensional and Diagnostic Interview -- Adult Version (3Di-Adult). Feasibility, reliability and validity of the Dutch 3Di-Adult was tested amongst autistic participants (n = 62) and a non-autistic comparison group (n = 30) in the Netherlands. The 3Di-Adult…

Background: The Group Climate Inventory (GCI) was tested for measurement invariance across 332 adults with and 225 adults without mild intellectual disabilities in Dutch forensic treatment, and for latent mean differences on its "Support", "Growth", "Repression", and "Atmosphere" subscales. Method:…

This paper provides a detailed account of the development of an instrument to investigate the emerging concept of presence in teaching (PiT) on a larger scale, explaining how the transition from data and findings from qualitative studies to a survey instrument was accomplished. In order to ensure relevance for teachers, the instrument needed to do…

Assessment and monitoring of safety in special education schools is imperative to establish and maintain a safe environment in which students can develop academic and social-emotional skills. The present study describes the development of a student self-report measure, the Safe at School questionnaire. Factorial validity, reliability and…

Introduction: In persons with severe to moderate intellectual disability (SID), no valid and reliable diagnostic instrument is available to determine PTSD. In this study, a new instrument was evaluated: the Diagnostic Interview Trauma and Stressors -- Severe Intellectual Disability (DITS-SID). Methods: DITS-SID, Aberrant Behavior Checklist and…

This paper presents a cross validation study of four instruments commonly used to assess educator proficiency in technology integration. Data for the validation study were contributed by 357 teacher preparation candidates enrolled in university coursework in the Netherlands. Factor analysis, multidimensional scaling, reliability analyses and…

The goal of the study was to deliver and validate a new solution-focused instrument, the Focus Skills Questionnaire (FSQ), to assess the degree of executive functioning skills in the school context, for three different education levels (elementary, secondary, and tertiary education) and informant groups (students, teachers and parents) on a sample…

How parents value and address emotions with their children is essential for children's emotion socialization. This study developed and validated the short Parent-Child Emotion Communication questionnaire (PEC), which measures the extent to which parents appreciate emotions, consciously discuss their own and their child's emotions with their…

This study assessed the psychometric properties of the Dutch translation of the Prosocial Behavior Questionnaire (PBQ-NL), a self-report questionnaire that distinguishes altruistic, reactive, and proactive prosocial behaviours. Participants were 381 Dutch adolescents and young adults aged 13-30 (M[subscript age] = 18.62, SD = 2.59, 65.1% female).…