Mathijs P J Vervloed

Radboud University | RU · Behavioural Science Institute

Purpose: Participation in everyday life activities is important for the development of children and is an important topic in rehabilitation practices. This qualitative study aimed to unveil the perspectives and experiences of teenagers with vision impairments (VIs) or motor impairments (MIs) regarding their participation in leisure activities. Mate...

children with sensory disabilities; ASD; sleep disorders; play; touch

AAC; CCN; diversity; culturally sensitive care

In his inaugural lecture, Mathijs Vervloed discusses the challenges involved in research on Augmentative and Alternative Communication (AAC) in children with multiple disabilities. When speech fails and communication does not occur spontaneously, there are other ways to communicate. However, this requires providing support to both to the child and...

Communicatie voor iedereen inaugurelerede door prof. dr. mathijs vervloed Mathijs Vervloed bespreekt in zijn inaugurele rede de uitdagingen in het onderzoek naar ondersteunde communicatie bij kinderen met meervoudige beperkingen. Als spreken niet lukt zijn er andere manieren om te communiceren. Daarvoor is het wel nodig ondersteuning te bieden, zo...

Ratjetoe De taal van kinderen met een visuele beperking bestaat uit een mengelmoes van woorden die de kinderen wel, niet of een beetje begrijpen. Hoe dit komt, leggen we uit in dit programma. Een ander woord voor mengelmoes is ratjetoe. Bij de Radboud universiteit willen we graag onze kennis naar je toe brengen, vandaar de naam Ratjetoe voor ons pr...

To support vision rehabilitation workers, an intervention guideline for the rehabilitation of children with cerebral visual impairment (CVI) was developed. It combines currently available theoretical and practice-based knowledge in the domains of academic performance and mobility. The aim of this study was to evaluate the perceived value of the gu...

AAC; CCN; CMB; ISAAC-NF

This study identified the current state of knowledge about the Quality of Life (QoL) of siblings of children who are deaf and hard of hearing (DHH), have a vision impairment (VI) or motor impairment (MI). Additionally, factors associated with individual variation in QoL were examined. A scoping review was performed using PsycInfo, ERIC, Web of Scie...

blindness; vision impairment; play; smart toys

Poster presentation during the Vision 2022 conference in Dublin, Ireland.

In past comparative studies, children with vision impairment were often shown a developmental delay compared to sighted children in several developmental domains. Medical treatments of vision impairments and societal attitudes toward disabilities changed considerably. Besides, within the rehabilitation practices, a stronger integration of multiple...

A menudo, se consulta a los profesionales que prestan servicios educativos destinados a personas con discapacidad visual o sordoceguera sobre el comportamiento de este grupo de personas con discapacidades múltiples. Un ámbito de interés específico es la posible presencia de trastornos del espectro autista en esta población. Las características del...

DIPPSI is meant as a tool for parents and professionals who look for an early intervention program. The data on the intervention programs comes from student assignments in a course on developmental disabilities at Radboud University. The content is brief and for some topics affected by the subjective interpretation of the student. If you encounter...

We set up a questionnaire that is based the framework the family of Participation Related Constructs (fPRC, Imms et al., 2017). This framework assumes that various factors influence and are influenced by participation. We chose for this framework because participation is an important goal in rehabilitation. We asked professionals working with child...

Practice report of OASID. OASID is developed for the population of individuals with moderate to profound intellectual disabilities, combined with visual impairments or deafblindness. It is an elaboration of the Observation of Characteristics of Autism in Persons with Deafblindness of Hoevenaars-van den Boom et al. (2009) that was designed for peopl...

Background and Aims: Persons with combined sensory and intellectual disabilities are more sensitive to stress than people without disabilities, especially when they have an Autism Spectrum Disorder (ASD). Reversely, stress can also trigger ASD symptoms. The current study investigated the relationship between stress and ASD symptoms in this populati...

Background In persons with combined intellectual and sensory disabilities, mood disorders, stress reactions, and attachment problems are more prevalent. This study assessed the presence of these problems within this target population and the effects of an additional Autism Spectrum Disorder (ASD). Methods Participants were 60 persons with combined...

Background Although many studies report children with vision impairments (VIs) experience play difficulties compared to sighted peers, large variation is present within the population of children with VIs. Aims The present study investigated peer play variation in 70 elementary school-aged children with VIs (M age = 8;11 years, SD = 2.25) and asso...

Children with visual impairments (VIs) in mainstream education often experience social participation difficulties during peer play with sighted children. It was investigated whether augmented toys were effective to facilitate peer play and social interaction in 18 dyads of children with VIs and their sighted classmates. Eighteen children aged 4-to-...

Stereotyped and repetitive behaviours are characteristics of autism spectrum disorder (ASD) but also occur in individuals with combined intellectual and sensory disabilities. This article looked at the differences in type, frequency, and duration of stereotyped behaviours between individuals with and without ASD in this population. The study includ...

Lay Description What is already known about this topic: Game‐based learning is becoming more popular as educational context. Children with visual impairments are often unable to benefit from a predominantly visual learning context. Augmented environments encourage exploratory learning by enhancing physical materials with technology. Sound‐augmented...

Overzicht van de ontwikkeling van en de hulpverlening aan kinderen die slechtzeind, blind of doofblind zijn en hun ouders.

Visual impairment in childhood often has life-long implications. To aim for the highest levels of functioning, participation, and quality of life and to ensure children's well-being, children should be entitled to the most effective rehabilitation programs. We review evidence for the effectiveness of rehabilitation interventions for children with v...

Observation of Autism spectrum disorder in people with sensory and intellectual disabilities, OASID, was developed as part of the PhD research project of Gitta de Vaan. This study was aimed at finding differentiating characteristics of Autism Spectrum Disorder (ASD) and intellectual disabilities combined with sensory impairments. This research was...

Observation of Autism spectrum disorder in people with Sensory and Intellectual Disabilities, ofwel OASID, is tot stand gekomen in het kader van het promotie onderzoek van Gitta de Vaan. Het onderzoek richtte zich op onderscheidende kenmerken van Autisme Spectrum Stoornis (ASS) en verstandelijke beperkingen in combinatie met zintuiglijke beperkinge...

A presumed setback in development between 16 and 27 months of age was studied by reviewing the literature on setback in development and longitudinal studies of children with blindness or visual impairment. The results showed that the period around the second year of life is a vulnerable period for these children, in which about 25–33% of the childr...

Probleemstelling Spelen is een belangrijke manier voor kinderen om te oefenen met sociale interactie. Voor veel kinderen met een visuele beperking is samen spelen met leeftijdsgenoten echter een uitdaging die ook hun participatie in de samenleving beperkt. De spelontwikkeling is vaak vertraagd en speelgoed is weinig betekenisvol. Smart toys kunnen...

Onderzoeksvragen aanvullen en prioriteren in co-creatie met ouders en medewerkers van Visio en Bartiméus, waarna projectplan definitief wordt. • Opvoeding en gezinsfunctioneren staan in beide cohorten centraal. • We onderscheiden in beide cohorten een intensief (N= 20) en extensief (n=80) te volgen groep. • Jaarlijkse en halfjaarlijkse metingen bij...

Background: Children with visual impairments (VIs) face challenges in social play activities, which limits their opportunities to practice social skills. Aims: We investigated whether augmented toys were effective to facilitate play in 52 children with VIs who attended special schools for students with visual impairments and blindness. Methods and...

Kinderen gebruiken hun zintuigen om indrukken op te doen van de wereld om hen heen. Met deze indrukken bouwen zij concepten op. Een concept is een heel scala aan informatie dat schuilgaat achter een woord. Het opbouwen van concepten verloopt anders bij kinderen met een ernstige visuele beperking (Linders, 1998)1). Zij missen de visuele informatie....

De behoeftes van ouders bij het opvoeden van hun kind met een progressieve aandoening Marleen de Velde & Mathijs Vervloed the needs of Parents while raising their Child with a Progressive disease Orthopedagogiek: Onderzoek en Praktijk, 57(9-10), 226-239 © Garant | ISSN 2211-6273 | september-oktober 2018 SAMENVATTING Ouders van een kind met een prog...

People with sensory impairments combined with intellectual disabilities show behaviours that are similar to Autism Spectrum Disorder (ASD). The instrument Observation of Autism in people with Sensory and Intellectual Disabilities (OASID) was developed to diagnose ASD in this target group. The current study focuses on the psychometric properties of...

concet development in children with visual impairment

The development of language and communication in people who are deafblind requires child rearing, interaction, and teaching methods that match each individual's cognitive development, level of functioning, and interest; that can be perceived on a sensory level; that provoke responses that match the individual's linguistic and motoric level; and tha...

Teachers’ beliefs are crucial to the success of inclusion programmes and reform efforts for children with special educational needs (SEN). Based on this evidence, one hundred and thirty-nine primary pre-service teachers from one training institution in the Netherlands completed an adapted version of a measure of beliefs towards inclusive education....

Instruments that are used for diagnosing of, or screening for, autism spectrum disorder (ASD) may not be applicable to people with sensory disabilities in addition to intellectual disabilities. First, because they do not account for equifinality, the possibility that different conditions may lead to the same outcome. Second, because they do not hav...

Teachers’ beliefs are crucial to the success of inclusion programmes and reform efforts for children with special educational needs (SEN). Based on this evidence, one hundred and thirty-nine primary pre-service teachers from one training institution in the Netherlands completed an adapted version of a measure of beliefs towards inclusive education....

It is difficult to diagnose autism spectrum disorder (ASD) in people with a combination of intellectual and sensory disabilities because of overlap in behaviour. The ASD typical behaviours of people with combined intellectual and sensory disabilities are often caused by their disabilities and not by ASD. Current diagnostic tools are inadequate to d...

Semantic development of six toddlers with visual impairment was trained. Each child was taught 10 new words by their mothers, who in turn were coached by early interventionists, in a five week training program. All six children showed improvement in word knowledge after training.

This article reviews the consequences of Retinitis Pigmentosa, a retinal degenerative disease with progressive reduction of the visual field, visual acuity, contrast sensitivity, and night blindness. Retinitis Pigmentosa is addressed from both a psychological and an educational standpoint, focusing on the impact on learning, emotional well-being, a...

Generally, deaf and hard of hearing (D/HH) children have fewer friends than hearing peers and their friendships are of a lower quality. The research hypothesis was that using the computer to communicate with new online friends through social network sites or playing games with offline friends is associated with D/HH friendship qualities, because it...

The study examined exploratory procedures (EPs) of congenitally blind and sighted children and adults on a haptic match-to-sample task. The aim was to examine the influence of age, visual status, and familiarity on the use of EPs when people haptically examine the object properties of weight, size, exact shape, and texture. EPs in the first and las...

There is evidence that blind people may strengthen their memory skills to compensate for absence of vision. However, which aspects of memory are involved is open to debate and a developmental perspective is generally lacking. In the present study, we compared the short term memory (STM) and working memory (WM) of 10-year-old blind children and sigh...

This study aimed to explore Dutch students' attitudes toward deaf, blind, paralyzed or intellectually disabled persons and to determine whether age, self-esteem, gender, religion and familiarity with a disabled person have a significant effect on these attitudes. The attitudes of 200 high school and 144 university students were determined with two...

Children with congenital visual impairment have been reported to be delayed in theory of mind development. So far, research focused on first-order theory of mind, and included mainly blind children, whereas the majority of visually impaired children is not totally blind. The present study set out to explore whether children with a broader range of...

The present study describes a tactual object matching task based on the study of Lederman and Klatzky (1987) for the dimensions Exact shape, Weight, Volume and Texture. Participants were congenitally blind children and their sighted classmates, congenitally blind adults and sighted adults. To study a possible effect of familiarity the task was perf...

Face processing development is negatively affected when infants have not been exposed to faces for some time because of congenital cataract blocking all vision (Le Grand, Mondloch, Maurer, & Brent, 2001). It is not clear, however, whether more subtle differences in face exposure may also have an influence. The present study looked at the effect of...

In this study a haptic object matching task is used to examine the accuracy of identification of the object dimensions: texture, weight, volume and exact shape in four different participant groups: congenitally blind adults, sighted adults, congenitally blind children, and sighted children. The results show that age is more influential for the accu...

This study of 48 children with congenital blindness who attended mainstream schools focused on the tactile and haptic skills they needed in typical academic and everyday tasks. The results showed that, in general, the children mastered such tactile tasks, but some items posed special problems.

The Oxford Handbook of Deaf Studies, Language, and Education, Volume 1, is here an updated edition. A range of international experts present a comprehensive overview of the field of deaf studies, language, and education. This area has grown dramatically over the past forty years. From work on the linguistics of sign language and parent-child intera...

The Tactual Profile assesses tactual functioning of children with severe visual impairments between 0 and 16 years of age. The Tactual Profile consists of 430 items, measuring tactile skills required for performing everyday tasks at home and in school. Items are graded according to age level and divided into three domains: tactual sensory, tactual...

In persons with deafblindness, it is hard to distinguish autism spectrum disorders from several deafblind specific behaviours caused by the dual sensory impairments, especially when these persons are also intellectually disabled. As a result, there is an over-diagnosis of autism in persons who are deafblind leading to unsuitable interventions. Auti...

Visual rehabilitation, consisting of visual stimulation and visual training, is a common practice in the education of children with visual impairments. Ferrell and Muir have stated that scientific research into the effects of visual stimulation and training is ambiguous and that therefore stimulation and training should be abandoned. The support fo...

The behaviors and medical problems in 27 persons with CHARGE syndrome were studied, because it was hypothesized that their behavior might be partly dependent on the heterogeneous medical status. With the exception of more tics, cardiac surgery was associated with positive behaviors: less withdrawn behavior, better mood, and a more easy temperament....

In this article, the authors compare the reading behavior of students with low vision to that of two groups of students with normal vision (reading-match and age-match students). In Experiment 1, students identified the first letter in words and nonwords and the researchers measured latency and accuracy. No group differences were found for latency,...

Empirical data on the development of interaction, communication, and language in deafblind children is very rare. To fill this gap, a case study was conducted in which the interaction between a teacher and a deafblind boy age 3 years 4 months was analyzed. Sequential analysis of their interaction confirmed some general clinical impressions about in...

Four experiments examined the utility of real-time text in supporting deaf students' learning from lectures in postsecondary (Experiments 1 and 2) and secondary classrooms (Experiments 3 and 4). Experiment 1 compared the effects on learning of sign language interpreting, real-time text (C-Print), and both. Real-time text alone led to significantly...

Tactual Profile is an instrument that provides a procedure to assess tactual functioning in children who are blind or who have a severe visual impairment, from birth up to 15 years of age. The instrument concentrates on the tactual requirements that the everyday environment places on perception. Tactual Profile is based on practical experience chec...

Tactual Profile is an observation instrument for charting the tactual functioning of children (age 0–16) with a severe visual impairment. In the period 2002–2004, a study was executed to determine basic psychometric qualities of Tactual Profile: difficulty level, test–retest reliability, inter-rater reliability and construct validity. The results o...

At the Royal Institute for the Education of the Visually Impaired and Blind, an assessment procedure, called In–Sight, has been developed to screen higher levels of visual functioning related to educational process. In–Sight is meant to be used for visually impaired children, 6 to 12 years of age, with normal learning capacities. The instrument has...

The Radboud Sensis program is intended to promote language, speech, and communication in children with visual impairments and their caregivers. Starting-point has been that such an intervention program can be a useful tool, not only for language and communication itself, but also for attachment, social and cognitive development. The program is dire...

The current poster describes the Tactual Profile. This is an instrument which has been provides a procedure to assess the tactual functioning in children, from birth up to 15 years of age, who are blind of who have a severe visual impairment. The development, the aims, the contents and the framework of the instrument are described.

In children with visual impairment sleep problems occur frequently. Sleep problems are also a quite common side effect of normal growth and development. When parents cannot cope with growth and developmental changes appropriately their parenting practices are easily challenged, which can easily lead to sleep problems. In this study treatment focuse...

Many deaf children have multiple disabilities. In this chapter the concept 'multiple disabilities' is explained. Subsequently etiology is discussed, followed by information about deafblindness, deafness and autism and deafness and intellectual disabilities. Educational accommodations, including assessment, access to communication and language (incl...

The Sonksen Picture Guide to Visual Function (SPGVF) assesses a person's ability to discriminate pictures of everyday objects. Sonksen added the SPGVF to tests of visual acuity, because real objects, miniatures, and pictures are the main learning medium for young children. In earlier studies correlations have been found between visual acuity and re...

The purpose of this article was a dual one: first, to provide a comprehensive literature review, and second, to report one study to extend that literature. That study investigated whether signs from the Sign Language of the Netherlands would facilitate word recognition by deaf children. Participants were 6-to 10-year-old deaf children who attended...

Slaapproblemen en visuele stoornissen 1 Mathijs P. J. Vervloed Orthopedagogiek: Leren en Ontwikkeling Katholieke Universiteit Nijmegen, Postbus 9104, 6500 HE Nijmegen Inleiding In haar boek " Insights from the blind " beschreef Selma Fraiberg (1977) het jongetje Peter. Peter is blind en vertoont slaapproblemen. Hij slaapt meestal pas tegen midderna...

This article describes new developmental age levels and some psychometric properties for the Reynell-Zinkin scales for young children with visual impairments. Besides the standard error of measurement, psychometric properties are available on item variation, scale reproducibility, and internal consistency. The usefulness of age levels of the Reynel...

HANDLEIDING Herziene uitgave van de Reynell-Zinkin ontwikkelingsschalen voor kinderen met een visuele beperking Voorzien van referentiewaarden voor Nederlandse kinderen die slecht zien van 0 tot 48 maanden M.P.J. Vervloed • H. Timmer-van de Vosse • • M.M. van Mens-Weisz • • J.H.M. Hamers • • • • Vakgroep Orthopedagogiek: Ontwikkeling en Leren, Kath...