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:…

Increasingly, teacher learning groups (TLGs) are being deployed as a way to realise high-quality educational designs. There is a need for monitoring and for insights into the development of TLGs. Therefore, in the present study, the 'Dimensions of Social Learning Questionnaire' (DSL-Q) is developed that can be used to map the social configuration…

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…

Background: Gaining insight into sleep-wake patterns of persons with intellectual disabilities is commonly done using wrist actigraphy. For some people, contactless alternatives are needed. This study compares a contactless bed sensor with wrist actigraphy to monitor sleep-wake patterns of people with moderate to profound intellectual…

This study aimed to review the validity and/or reliability of light-intensity physical activity (LPA) questionnaires and identify the most suitable questionnaires for measurement of LPA in adults. Following the PRISMA-P 2020 guidelines, we searched MEDLINE, PsycINFO, CINAHL, Scopus, Embase, and MedNar. Only studies that targeted adults [greater…

Purpose: This paper aims to measure the extent to which students possess the necessary competences of an employable graduate, the authors explored the development and validation of a questionnaire that measures employability competences of students in higher education through combining insights from higher education and workplace learning…

Prospective graduate students are usually required to have attained an undergraduate degree in a related field and high prior grades to gain admission. There is consensus that some relatedness between the students' undergraduate and graduate programs is required for admission. We propose a new measurement for this relatedness using cosine…

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…

Background: There are no psychometrically validated instruments available to measure motor skills of children with profound intellectual and multiple disabilities (PIMD). In this study, the construct validity and reliability (Rho) of the Motor Development List for children with PIMD (MDL-PIMD), a proxy-reported measure, was investigated. Methods:…

It is necessary to supply proof regarding the construct validity of the scales. Especially, when new scales are developed the construct validity is researched by the Exploratory Factor Analysis (EFA). Generally, factor extraction is performed via the Principal Component Analysis (PCA) which is not exactly factor analysis and the Principal Axis…

Adaptive teacher support (i.e., support that is tailored to students' understanding) is considered crucial for students' learning. Previous research examined support adaptivity mostly in small-scale, observational studies without distinguishing between theory-based facets of support adaptivity. Yet, students' perceptions of different aspects of…

For autism spectrum disorder (ASD) in adults there are several diagnostic instruments available with a need for consideration of the psychometric properties. This study aimed to conduct a first psychometric evaluation of a new diagnostic ASD instrument, the NIDA (Dutch Interview for Diagnostic assessment of ASD in adults) in 90 adult males without…

Academic self-efficacy (ASE) refers to a student's global belief in his/her ability to master the various academic challenges at university and is an essential antecedent of wellbeing and performance. The five-item General Academic Self-Efficacy Scale (GASE) showed promise as a short and concise measure for overall ASE. However, of its validity…