Analyses of convergent validity and group assignment using self-report, caregiver-report and interview-based measures of adolescent psychopathy were conducted in a sample of 160 incarcerated adolescents. Results reveal significant convergent validity between caregiver-report measures of adolescent psychopathy, significant convergent validity…

There is a significant increase in the prevalence of autism and autism spectrum disorders (ASD) in children with estimates now reaching 1 in 110 children in the United States. Families report difficulties in finding services for their young and adult children. Many adults with ASD receive services and supports through state intellectual and…

Deficits in executive functioning (EF) have been proposed to underlie the behavioural patterns of individuals with an autism spectrum disorder. Researchers have shown that the Asperger's syndrome (AS) population performs more poorly than typically developing controls on many EF tasks. However, the research literature is inconsistent in identifying…

Aim: The cognitive-linguistic abilities of 2 subgroups of children with speech impairment were compared to better understand underlying deficits that might influence effective intervention. Methods: Two groups of 23 children, aged 3;3 to 5;6, performed executive function tasks assessing cognitive flexibility and nonverbal rule abstraction.…

Dyadic concordance in physician-patient interactions can be defined as the extent of agreement between physicians and patients in their perceptions of the clinical encounter. The current research specifically examined two types of concordance: informational concordance--the extent of agreement in physician and patient responses regarding patient…

Although it is still unclear what causes autism spectrum disorders (ASDs), over time researchers and clinicians have become more precise with detecting and diagnosing ASD. Many diagnoses, however, are based on the criteria established within the "Diagnostic and Statistical Manual of Mental Disorders" ("DSM"); thus, any change in these diagnostic…

Relationships between attention/executive functions and language learning were investigated in students in Grades 4 to 9 (N = 88) with and without specific learning disabilities (SLDs) in multiword syntax in oral and written language (OWL LD), word reading and spelling (dyslexia), and subword letter writing (dysgraphia). Prior…

The present study investigated differences in cognitive coping strategies between anxiety-disordered and non-anxious adolescents. In addition, the interaction effect with gender as well as differences between specific anxiety diagnoses was examined. A clinical sample of 159 anxiety-disordered adolescents and a general community sample of 370…

Background: Children with speech sound disorders (SSD) form a heterogeneous group who differ in terms of the severity of their condition, underlying cause, speech errors, involvement of other aspects of the linguistic system and treatment response. To date there is no universal and agreed-upon classification system. Instead, a number of…

The aim of this study was to investigate whether children with high-functioning autism (HFA) and Asperger's syndrome (AS) can be differentiated from each other and from typically developing children on their cognitive profiles. The present study included a total of 45 participants: children with autism (high-functioning autism or Asperger's…

Attention deficit hyperactivity disorder (ADHD) is a commonly diagnosed neuropsychological disorder among school-aged children. The purpose of the current study was to examine the relationship between father residency status and children's symptoms of ADHD using a large, nationally representative and community-based sample. To achieve this…

Previous studies have highlighted a high level of language impairment (LI) and pragmatic language disorder (PLD) amongst children with social, emotional and behavioural difficulties (SEBD). However, little is known regarding the impact of LI in the severity of PLD in this group. This study investigates the language and pragmatic language skills of…

In Study 1, children in grades 4-9 (N = 88, 29 females and 59 males) with persisting reading and/or writing disabilities, despite considerable prior specialized instruction in and out of school, were given an evidence-based comprehensive assessment battery at the university while parents completed questionnaires regarding past and current history…

The purpose of this study was to investigate the cognitive and behavioral profiles of high ability students. Performance on measures of verbal and visuo-spatial working memory and general ability (vocabulary and block design) was compared across the following groups: high, average, and low ability students. The behavioral profile of high ability…

Externalizing psychopathology (EXT) is a framework for understanding diagnostic comorbidity and etiology of antisocial and substance-use behaviors. EXT indicates continuity in adulthood but the structure of adolescent EXT is less clear. This report examines whether adolescent EXT is trait-like, as has been found with adults, or categorical. We use…