Background: Given the significant gap in tailored assessment tools, this research seeks to adapt the Self-concept (Form 5-AF5) questionnaire for young students with intellectual disabilities, employing an inclusive approach. Method: Twenty-three disability experts initially assessed questionnaire suitability, leading to revisions for clarity.…

Advocacy has long been heralded as a way to create change for individuals with intellectual and developmental disabilities (IDD) and their families. However, without an established measure, it is difficult to accurately characterize advocacy activities. Drawing from extant research, the Advocacy Activities Scale was developed to assess three…

Background: To assess epistemic trust in people with intellectual disabilities, we adapted the Questionnaire Epistemic Trust (QET) for people with mild to moderate intellectual disabilities or borderline intellectual functioning (MMID/BIF). Method: We investigated the factor structure, the reliability and construct validity in 147 adults. Results:…

Background: Behavioural problems in individuals with intellectual disabilities have a negative impact on them. Limited assessment measures exist in Spain. This study aimed to validate the Behavior Problems Inventory--Short Form (BPI-S) in the Spanish population by examining its psychometric properties and factorial structures. Method: This study…

Background: The study focuses on the need to optimise assessment scales for support needs in individuals with intellectual and developmental disabilities. Current scales are often lengthy and redundant, leading to exhaustion and response burden. The goal is to use machine learning techniques, specifically item-reduction methods and selection…

Background: A measure to provide insight regarding health-related quality of life of adults with severe motor and intellectual disabilities was lacking. For this reason, the CPADULT was developed. This measure includes domains relating to an individual's physical, mental, and social functioning. The purpose of this study was to assess the…

This paper describes methods and findings from student cognitive labs, teacher cognitive labs, and test administration observations as evidence evaluated in a validity argument for a computer-based alternate assessment for students with significant cognitive disabilities. Validity of score interpretations and uses for alternate assessments based…

The purpose of this study was to examine the effectiveness of providing extra time as an accommodation to students with learning disabilities (LD) in higher education institutions. The results, which are based in the setting of a South African accountancy programme, provides a unique context where time, in time-constrained assessments, are often…

Background: Walk tests are common gait speed and endurance assessments. Shorter test versions could benefit adults with intellectual disability. Thus, the concurrent validity of shorter tests was studied. Methods: Thirty-five adults with mild to moderate intellectual disability, aged 21-64 years, were assessed with the 4-m walk test, 10-m walk…

With this quantitative study we aimed to develop a scale that could be used to assess the attitudes of special education needs (SEN) teachers towards students with multiple disabilities. The scale was tested in 2 stages using 2 different samples. Firstly, the scale was administered to a convenience sample of 215 teachers. For the first study, the…

Children with developmental disabilities have different feeding and swallowing problems. The purposes of the present study were to develop an Arabic version of the FHI-C and to evaluate its validity, consistency, and reliability in Arabic children with developmental disabilities for assessing how feeding and swallowing problems impair the…

Timely diagnosis of dysphagia is important for people with an intellectual disability. Periodic screening of each individual by speech-language therapists is barely feasible with respect to limited resources. Therefore, preselection of individuals with an increased dysphagia risk through screening by caregivers is crucial. This study aimed to…

The current study aimed to develop an adaptive behavior construct using National Longitudinal Transition Study-2 (NLTS2) data. The parent survey data gathered at Wave 1 was used to create an adaptive behavior construct. A bifactor model with three subdomains of conceptual, social, and practical skills with a total of 21 items was developed using…

Background: For families with adolescent children, the transition to adulthood is usually challenging. This period may be extra demanding for families with a child with profound intellectual and multiple disabilities due to the child's strong and persistent support needs. To support these families during this phase and to facilitate the transition…

This study was conducted to collect validity evidence to support the use of an observation instrument to evaluate the performance of special education teachers (SETs) of students with significant disabilities (SWSD). In the study, a purposive sample of 49 SETs of SWSD, who were appropriately credentialed and experienced, evaluated the content of…