Dirk Kraijer
University of Groningen
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Journal of Autism and Developmental Disorders | 2000
Dirk Kraijer
A review is presented of the investigations carried out concerning the adaptive behavior of persons with the dual disability of mental retardation and autism/PDD. A close correspondence is found between the results obtained by means of a Dutch set of scales, the SRZ, SGZ, and SMZ, and those obtained by means of the Vineland Adaptive Behavior Scales. Compared with matched nonautistic persons, the performance of dually disabled persons is found to be particularly poor in the domain Social Skills/Socialization and somewhat less poor in the domain Communication. Performance of the two categories does not differ in the domains Self Help/Daily Living Skills and Gross Motor Skills/Motor Skills. As a net result, persons of the dually disabled category are found to obtain comparatively low total scores for social competency, the SRZ-Total/Adaptive Behavior Composite. In addition, autistic mentally retarded persons are found to display more maladaptive behavior. For comparative studies in the mental retardation field the use of level of Self Help/Daily Living Skills and, to a lesser extent, level of Gross Motor Skills/Motor Skills are recommended as suitable matching variables.
Kind En Adolescent | 2007
Annelies de Bildt; Dirk Kraijer
AbstractDe Bildt, A. A., & Kraijer, D. W. (2007). Pervasive developmental disorders in children and adolescents with mild intellectual disabilities, Kind en Adolescent, 28 (3), 171-181.Pervasive developmental disorders (pdds) frequently occur in children with mild intellectual disabilities (mid): the most recent Dutch percentages report almost 1 in 10, 15 times higher than the 0.6% in the general population. The co-occurrence of pdd with mid significantly affects the development and behaviour of the child, also with respect to adaptive skills and indirectly the level of education that can be attained. The high prevalence and the severe consequences of pdd in mid justify an early and thorough diagnostic process. Instruments, such as the pdd-mrs, the adi-r and the ados may be of help in this process. Keywords: mild intellectual disability (mid); Pervasive Developmental Disorders (pdd); diagnostic instruments.SamenvattingPervasieve ontwikkelingsstoornissen (pdd’s) komen vaak voor bij kinderen met een lichte verstandelijke beperking (lvb): de recentste Nederlandse cijfers wijzen op bijna 1 op 10, ruim 15 maal hoger dan de 0,6% in de algemene populatie. Het hebben van een pdd naast een lvb heeft zeer beperkende gevolgen voor de ontwikkeling en het gedrag van het kind, en daarmee ook voor de sociale redzaamheid en indirect voor het haalbare schoolniveau. Vanwege de hoge prevalentie en de ernstige gevolgen van pdd bij een lvb is het van belang dat diagnostiek vroegtijdig en zorgvuldig wordt ingezet. Instrumenten als de avz-r, adi-r en ados kunnen hierbij behulpzaam zijn.
Journal of Autism and Developmental Disorders | 2004
Annelies de Bildt; Sjoerd Sytema; Cees Ketelaars; Dirk Kraijer; Erik J. Mulder; Fred R. Volkmar; Ruud B. Minderaa
Journal of Child Psychology and Psychiatry | 2005
Annelies de Bildt; Sjoerd Sytema; Dirk Kraijer; Ruud B. Minderaa
Journal of Autism and Developmental Disorders | 2005
Annelies de Bildt; Dirk Kraijer; Sjoerd Sytema; Ruud B. Minderaa
Journal of Intellectual Disability Research | 2005
A de Bildt; Sjoerd Sytema; Dirk Kraijer; Sara S. Sparrow; Ruud B. Minderaa
Journal of Child Psychology and Psychiatry | 2006
Natasja D. J. van Lang; Anne Boomsma; Sjoerd Sytema; Annelies de Bildt; Dirk Kraijer; Cees Ketelaars; Ruud B. Minderaa
Journal of Intellectual Disability Research | 2005
A de Bildt; M. Serra; Ellen Luteijn; Dirk Kraijer; Sjoerd Sytema; Ruud B. Minderaa
Journal of Autism and Developmental Disorders | 2005
Dirk Kraijer; Annelies de Bildt
Journal of Autism and Developmental Disorders | 2003
A de Bildt; Sjoerd Sytema; Cees Ketelaars; Dirk Kraijer; Fred R. Volkmar; Ruud B. Minderaa