Pervasive Developmental Disorders and Autism Spectrum Disorders: Are These Disorders One and the Same?

The concept of pervasive developmental disorders (PDD) and autism spectrum disorders (ASD) closely resemble each other. Both ICD-10 and DSM-IV use the term PDD. The authors surveyed the perception of PDD/ASD and attitudes toward terminology. The subjects of this study were 205 medical/social-welfare professionals working in fields relating to developmental disorders. Questionnaires were mailed to site investigators at the collaborating institutes. With regard to what the scope of ASD and PDD encompasses, the answers were almost equally divided among three views: ASD and PDD are the same, PDD is wider in scope and ASD is wider. The terms PDD and autism were used in slightly different ways depended upon the situation. Our results demonstrate that the parameters of PDD and ASD are unclear and that the terms related to PDD/ASD are often used differently. Further studies are required to develop more clear and reliable diagnostic criteria for PDD.     

Changes in the Mother–Child Relationship During the Transition to Adulthood for Youth with Autism Spectrum Disorders

We examined whether exiting high school was associated with changes in the mother–child relationship. Participants were 170 mothers of youth with ASD who were part of our larger longitudinal study and who exited high school during the study; data were collected four times over 7 years. Results indicated improvement in the mother–child relationship while in high school; however, improvement in all indices slowed or stopped after exit. Mothers of youth with ASD without an intellectual disability (ID) and who had more unmet service needs evidenced the least improvement after exit. Our findings provide further evidence that the years after high school exit are a time of increased risk, especially for those with ASD without ID and whose families are under-resourced.     

Theory of Mind–Based Action in Children from the Autism Spectrum

In this study we investigated whether task interest facilitated the application of Theory of Mind capacities in high-functioning children from the autism spectrum. Children were invited to carry out two simple tasks. Sabotage of both tasks by a third party resulted in the experimenter appearing to have a false belief. Whereas pervasive developmental disorder not otherwise specified (PDDNOS) children tended to correct the experimenter's false belief in the rewarded task condition, children with autism were not influenced by task condition. These results highlight the role played by social and communicative factors in the application of Theory of Mind knowledge in the former clinical group.     

Brief Report: Parent–Child Sexuality Communication and Autism Spectrum Disorders

While considerable research has focused on promoting independence and optimizing quality of life for adolescents and young adult with autism spectrum disorder (ASD), sexual development and sexuality education have been largely neglected. Experts recommend that parents be the primary source of sex education for adolescents with ASD, and that sex education be tailored to a child’s developmental level. Prior studies show that parents of youth with ASD are uncertain about how to best communicate about sex and which topics to discuss with their children. In the current study we administered an online survey to 190 parents of adolescents with ASD in order to better understand sexuality communication patterns between parents and adolescents with both low and high functioning ASD.     

Stability of the Autism Diagnostic Interview—Revised from Pre-School to Elementary School Age in Children with Autism Spectrum Disorders

This study examined the stability of scores on the ADI-R from pre-school to elementary school age in children with autism spectrum disorders (ASD). Participants were 35 children who, at T1, all had a clinical diagnosis of ASD. On initial assessment (mean age 3.5 years; SD 0.6 years), all met ADI-R algorithm criteria for autism. ADI-R assessments were repeated at follow up (FU; mean age 10.5 years; SD 0.8 years). Changes in ADI-R total, domain and ADI-R algorithm item scores were assessed. Twenty-eight children continued to score above the ADI-R cut-off for autism at FU, although significant decreases in ADI-R domain and item scores were also found. In conclusion while classification of children according to ADI-R criteria generally remained stable between pre-school and elementary school age, many children demonstrated significant improvements in symptom severity.     

Brief Report: Do the Nature of Communication Impairments in Autism Spectrum Disorders Relate to the Broader Autism Phenotype in Parents?

Extensive empirical evidence indicates that the lesser variant of Autism Spectrum Disorders (ASD) involves a communication impairment that is similar to, but milder than, the deficit in clinical ASD. This research explored the relationship between the broader autism phenotype (BAP) among parents, an index of genetic liability for ASD, and proband communication difficulties. ASD probands with at least one BAP parent (identified using the Autism Spectrum Quotient) had greater structural and pragmatic language difficulties (assessed using the Children’s Communication Checklist-2) than ASD probands with no BAP parent. This finding provides support for the position that genetic liability for ASD is associated with increased communication difficulties across structural and pragmatic domains.     

Detecting Autism Spectrum Disorders in the General Practitioner’S Practice

It takes considerable time before Autism Spectrum Disorders are diagnosed. Validated diagnostic instruments are available, but not applicable to primary healthcare. By means of a case-control study we investigated whether there were differences in presented complaints and referral patterns between children with ASD (n?=?49) and a control group of children without ASD (n?=?81). Children with ASD were often presented as crybabies and often showed feeding problems. They visited the GP's surgery more often with anxiety disorders, enuresis, and sleeping disorders. They were referred more often to physiotherapists and speech-therapists and had tympanostomy tubes and tonsillectomies more often. Depression in the parents of children with ASD was remarkably prevalent.     

Time Trends in Reported Autism Spectrum Disorders in Israel, 1986–2005

Reports indicate sharp increase in prevalence of autism spectrum disorders (ASD). We aimed to assess the time trend in prevalence of ASD in Israel and describe demographic characteristics of the registered cases. We reviewed the autism registry of the Israeli Ministry of Social Affairs which includes 4,709 cases and identified 4,138 cases born between the years 1986 and 2005. Registered cases were mainly males (84.4%) and Jewish (96.6%). Prevalence data indicated an increase from 1.2 per 1,000 in those born in 1986 to 3.6 per 1,000 in 2003. Greater increase was seen in males, reaching a peak of 5.7 per 1,000, compared to 1.2 per 1,000 in females. Increased ASD prevalence was observed among Israeli children born in 1986–2005.     

Is the Autism-Spectrum Quotient a Valid Measure of Traits Associated with the Autism Spectrum? A Rasch Validation in Adults with and Without Autism Spectrum Disorders

The Autism-Spectrum Quotient (AQ) is among the most widely used scales assessing autistic traits in the general population. However, some aspects of the AQ are questionable. To test its scale properties, the AQ was translated into Swedish, and data were collected from 349 adults, 130 with autism spectrum disorder (ASD) and 219 without ASD, and analysed with Rasch. Several scale properties of the AQ were satisfactory but it did not meet the criterion of a unidimensional measure of autistic traits. The Rasch analysis showed that the 50-item AQ could be reduced to a 12-item subset with little loss of explanatory power, with the potential to efficiently measure the degree to which adults with and without ASD show autistic traits.     

Practitioner’s Guide to Assessment of Autism Spectrum Disorders in Infants and Toddlers

Recent advances in clinical research have made it possible to diagnosis autism spectrum disorders (ASD) as early as the second year of life. The diagnostic process early in development is often complex, and thus, familiarity with the most recent findings in clinical assessment instruments, early symptoms, and developmental trajectories of young children with autism is essential. This paper provides an empirically based practitioner's guide to issues and concerns related to early diagnosis of ASD in very young children, documentation of the course and patterns of ASD symptomatology in infants and toddlers, and current understanding in the field of diagnostic outcomes of children identified in the first and second year of life.     

Reliability and Validity of the Children’s Interview for Psychiatric Syndromes-Parent Version in Autism Spectrum Disorders

The Children's Interview for Psychiatric Syndromes-Parent Version (P-ChIPS) is a structured psychiatric interview designed to assess the presence of psychiatric disorders in children and adolescents. This study examined the reliability and validity of the P-ChIPS in 61 youngsters (6- to 17-years-old) with Autism Spectrum Disorders. Reliability analyses were conducted according to level of functioning and language level. Results indicated that interrater reliability values were largely in the good to excellent range. Concordance between the P-ChIPS and the Child and Adolescent Symptoms Inventory was fair for the majority of disorders. Percent overall agreement for most disorders was good, lending support to the validity of the P-ChIPS. The results of this study suggest that the P-ChIPS is appropriate for this population.     

Teachers’ Perceptions Regarding the Management of Children with Autism Spectrum Disorders

This study examines Greek teachers’ perceptions related to the nature and management of autistic children. To investigate these issues, a statistically reliable number of questionnaires (n = 228) was distributed to a diversified teacher population. The questionnaire responses were analyzed statistically to identify the explanatory power of critical independent variables. The research findings support that teachers’ specialized training and working experience are critical inputs to improve teachers’ perceptions and efficient serving of autistic children. A cumulative joint effect of teachers’ previous specialized education and working experience working with autistic children was also indicated. This could be supportive of teachers upgrading their active leading role in team working with specialized scientific staff, parents and institutions on autistic children.     

Can Autism Spectrum Disorders and Social Anxiety Disorders be Differentiated by the Social Responsiveness Scale in Children and Adolescents?

Autism spectrum disorder (ASD) as well as social phobia (SP), and selective mutism (SM) are characterised by impaired social interaction. We assessed the validity of the Social Responsiveness Scale (SRS) to differentiate between ASD, and SP/SM. Raw scores were compared in 6–18 year old individuals with ASD (N = 60), SP (N = 38), SM (N = 43), and typically developed (N = 42). Sensitivity and specificity were examined. The three disorders showed overlapping SRS scores. Especially in boys with SM (ROC–AUC = .81), presence of ASD was overestimated by the SRS. A combination of three disorder specific questionnaires resulted in marginally improved diagnostic accuracy. For the clinically very relevant differential diagnosis of SP/SM, SRS results must be interpreted with caution.     

Morphological Features in Children with Autism Spectrum Disorders: A Matched Case–Control Study

This study was designed to examine morphological features in a large group of children with autism spectrum disorder versus normal controls. Amongst 421 patients and 1,007 controls, 224 matched pairs were created. Prevalence rates and odds ratios were analyzed by conditional regression analysis, McNemar test or paired t-test matched pairs. Morphological abnormalities were significantly more prevalent in patients with autism than in the normal control group and 48 morphological features distinguished patients from controls. Our findings show that morphological features are associated with autism. Exploring potential underlying genetic mechanisms of this association might lead to a better understanding of autism.     

Anxiety Disorders and Sensory Over-Responsivity in Children with Autism Spectrum Disorders: Is There a Causal Relationship?

Anxiety disorders and sensory over-responsivity (SOR) are common in children with autism spectrum disorders (ASD), and there is evidence for an association between these two conditions. Currently, it is unclear what causal mechanisms may exist between SOR and anxiety. We propose three possible theories to explain the association between anxiety and SOR: (a) SOR is caused by anxiety; (b) Anxiety is caused by SOR; or (c) SOR and anxiety are causally unrelated but are associated through a common risk factor or diagnostic overlap. In this paper, we examine support for each theory in the existing anxiety, autism, and neuroscience literature, and discuss how each theory informs choice of interventions and implications for future studies.