This study investigates what role diagnoses play in institutional decision-making in regards to provision of special educational support and in the referral of pupils from mainstream schooling to special needs schools or classes. During the past decades, many countries have witnessed a radical increase in the number of children receiving…

We estimated autism spectrum disorder (ASD) prevalence in 7-9 year-old children in 2015 using data from three nationwide health registry systems (Denmark, Finland, Iceland) and two French population-based regional registries. Prevalence ranged from 0.48% in South-East France to 3.13% in Iceland (South-West France: 0.73%, Finland: 0.77%, Denmark:…

Background: Individuals with intellectual disability respond differently to traumatic events, compared to the general population, which makes post-traumatic stress disorder (PTSD) symptoms difficult to recognize. The current study aims to examine the presence of undetected PTSD among individuals with intellectual disability and a known history of…

The prevalence of autism/autism spectrum disorder (ASD) has been increasing across the world. Previous studies in Norway reported, that the prevalence rate for 0-10-year-old children is 1 in 166, and in the case of 11-year-old children it is 1 in 125. Moreover, another nationwide study discovered that 1 in 192 males and 1 in 695 females between…

This study of institutional categorization reports an investigation of the practices, procedures and assumptions of psychiatric staff members when diagnosing ADHD. The main data upon which the study is based consist of transcribed audio recordings of meetings in the psychiatric clinic. Here children referred from primary schools on the suspicion…

From a purely educationist perspective, gaining a deeper understanding of several aspects related to the prevalence of autism/ASD in a given population is of great value in planning and improving educational and psychological intervention for treatment, training, and teaching of children with this disorder. In this article, I present and discuss…

We investigated whether there is an association between increased risk for autism spectrum disorders (ASD) and selective serotonin reuptake inhibitors (SSRIs) used during pregnancy. This study used Denmark's health and population registers to obtain information regarding prescription drugs, ASD diagnosis, and health and socioeconomic status. There…

Eight children between 7 and 11 years of age were interviewed about their understanding of their own diagnoses. The diagnoses in question were attention deficit hyperactivity disorder, autism and nonverbal learning disorder. They were from different special schools that are segregated from state schools. In addition to the interviews, a role play…

In parallel with a national school policy on an inclusive school with a marked reduction in the number of pupils who, due to their disruptive behaviour, are referred to educational provisions outside of the ordinary school environment, a sharp rise has been seen in the number of children and teenagers who are given a clinical diagnosis, first and…

The purpose of this study was to assess the validity of the diagnosis of childhood autism in the Danish Psychiatric Central Register (DPCR) by reviewing medical records from 499 of 504 total children with childhood autism born 1990-1999. Based on review of abstracted behaviors recorded in case records from child psychiatric hospitals, case status…

Prevalence statistics for autism spectrum disorders (ASD) vary widely across geographical boundaries. Some variation can be explained by diagnostic methods, case ascertainment and age at diagnosis. This study compared prevalence statistics for two distinct geographical regions, Denmark and Western Australia, both of which have had population-based…

Background: The etiology of autism is unknown. A strong genetic component has been detected but non-genetic factors may also be involved in the etiology. Methods: We used data from the Danish Psychiatric Central Register and the Danish Civil Registration System to study some risk factors of autism, including place of birth, parental place of…