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Although it has been well established that individuals with autism exhibit difficulties in their face recognition abilities, it has been debated whether this deficit reflects a category-specific impairment of faces or a general perceptual bias toward the local-level information in a stimulus. In this study, the Let's Face It! Skills Battery [Tanaka &(More)
The Gilliam Autism Rating Scale (GARS) was developed as a relatively easy, inexpensive aid in the surveillance and diagnosis of autism. This study examined the validity of the GARS when used with a sample of 119 children with strict DSM-IV diagnoses of autism, ascertained from both clinical and research settings. The GARS consistently underestimated the(More)
Atypical amygdala development may play a key role in the emergence of social disability and other symptoms of autism (Baron-Cohen et al., 2000; Schultz, 2005). The mechanisms by which this may occur have received little attention, however, and most support from behavioral and imaging studies has been concerned with socially relevant stimuli such as faces.(More)
Although repetitive behaviors are a core diagnostic domain for autism spectrum disorders, research in this area has been neglected. This study had two major aims: (1) to provide a detailed characterization of repetitive behaviors in individuals with Asperger Syndrome (AS), high-functioning autism (HFA), and typically developing controls (TD); and (2) to(More)
We tested competing hypotheses for sex differences in performance monitoring using the error-related negativity and the posterror positivity components of the event-related potential (ERP). High-density ERPs were acquired while 100 female and 98 male partcipants completed a flanker task. Sexes did not differ in accuracy or posterror slowing, although(More)
OBJECTIVE To examine the efficacy of intravenous porcine secretin for the treatment of autistic disorder. METHOD Randomized, double-blind, placebo-controlled, crossover design. Fifty-six subjects with autistic disorder received either a secretin or placebo infusion at baseline and the other substance at week 4. Subjects were given the Autism Diagnostic(More)
Individuals with high-functioning autism often display deficits in social interactions and high-level cognitive functions. Such deficits may be influenced by poor ability to process feedback and rewards. The feedback-related negativity (FRN) is an event-related potential (ERP) that is more negative following losses than gains. We examined FRN amplitude in(More)
Depression is frequently found in patients with panic disorder. It is known that patients suffering from panic disorder and depression have more severe symptoms of anxiety and avoidance and respond less well to treatment with antidepressants. The General Behaviour Inventory, an instrument that identifies subjects with subsyndromal and syndromal recurrent(More)
This study examined the relationship between everyday repetitive behavior (primary symptoms of autism) and performance on neuropsychological tests of executive function and central coherence (secondary symptoms). It was hypothesized that the frequency and intensity of repetitive behavior would be positively correlated with laboratory measures of cognitive(More)
Sensory processing abnormalities, anxiety and restricted and repetitive behaviours (RRBs) frequently co-occur in autism spectrum disorders (ASD). Though the relationship between these phenomena is not well understood, emerging evidence indicates intolerance of uncertainty (IU) may play an important role. This study aimed to determine pathways between(More)