Publications by authors named "Arbelle S"

Elucidating the heterogeneous etiologies of autism will require investment in comprehensive longitudinal data acquisition from large community based cohorts. With this in mind, we have established a hospital-university-based (HUB) database of autism which incorporates prospective and retrospective data from a large and ethnically diverse population. The collected data includes social-demographic characteristics, standardized behavioral testing, detailed clinical history from electronic patient records, genetic samples, and various neurological measures.

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Extreme levels of certain temperament traits can be early markers of different developmental pathways of attention-deficit/hyperactivity disorder (ADHD). However, the long-term utility of using these traits as predictors of ADHD is not fully known. This study includes 64 male adolescents (M age = 13.

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Autistic spectrum disorders (ASDs) are characterized by significant disability in interpersonal communication, social interactions and patterns of unusual behavior. In recent decades the worldwide prevalence of ASDs is rising almost exponentially, without a clear known etiological explanation. Until recently, ASDs were defined by the American Manual of Psychiatric Diagnoses: The DSM-IV-TR, under one conceptual umbrella of "Pervasive Developmental Disorders" (PDD).

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Objective: This study examined the influence of allelic variation in two dopamine genes, the dopamine receptor D4 (DRD4) gene and the dopamine transporter D1 (DAT1) gene, and paternal attention-deficit hyperactivity disorder (ADHD) symptomatology on the level of ADHD symptoms in 96 four and a half-year-old boys.

Method: DNA was collected by means of a buccal swab and genotyped for DRD4 and DAT1. Mothers completed the Dupaul ADHD checklist on their sons.

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Patterns of interaction between parents and 7-month-old boys at familial risk for attention deficit/hyperactivity disorder (ADHD) and a comparison group were studied during a warm-up and two play episodes. The sample included 78 (47 at-risk, 31 comparison) mother-child and 45 (27 at-risk, 18 comparison) father-child dyads. A coding system developed by G.

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Objective: Studies have shown that genetic factors are significant in predisposing individuals to shyness and social phobia. Toward further elucidating the genetic structure of shyness, the authors examined four functional polymorphisms that make biological sense for contributing to the development of this phenotype: serotonin transporter promoter region 44 base pair insertion/deletion (5-HTTLPR), dopamine D(4) receptor exon III repeat (DRD4), catechol O-methyltransferase (COMT), and monoamine oxidase A promoter region repeat (MAO(A)).

Method: The authors assessed shyness after recruitment of a nonclinical sample (N=118, unscreened second-grade children) using a composite scale derived from questionnaires administered to the children, parents, and teachers.

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We have examined three functional polymorphisms, serotonin transporter promoter region polymorphism (5-HTTLPR), dopamine D4 exon III repeat region (DRD4), and catechol-O-methyltransferase (COMT), in a small family-based design toward identifying candidate genes that confer risk for autism. A significant excess of the long/long 5-HTTLPR genotype was observed (likelihood ratio = 7.18; P = 0.

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Theory of mind (ToM) abilities of children with schizophrenia, children with high functioning autism, and normally developing children, matched on mental age (MA), verbal MA, and performance MA, were compared. Both clinical groups were matched on chronological age as well, whereas the normally developing children were younger. A fact belief task, a value belief task, a deception task, and a false belief task were administered.

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The aim of this study was to determine whether displays of negative emotions are more aversive to young children with autism than displays of neutral emotions. The attention, behavioral reactions, facial affect, and cardiac responses of 22 autistic and 22 mentally retarded 3-5-year-old children were compared when an experimenter pretended to hurt herself and showed strong distress in contrast to when the experimenter pretended to hurt herself but showed only neutral affect. The children in both diagnostic groups looked more at the experimenter and appeared more interested and concerned when she displayed strong distress than when she showed neutral affect.

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Structured psychiatric interviews were administered to 60 children with complex partial seizure disorder (CPS), 40 children with primary generalized epilepsy with absences (PGE), and 48 control children, aged 5 to 16 years. Significantly more patients with epilepsy had psychiatric diagnoses compared with the control children. There were no statistically significant differences, however, in the number of patients with CPS and PGE with psychiatric diagnoses.

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Objective: To examine whether formal thought disorder and psychopathology occurred in children with complex partial seizures (CPS) rather than children with primary generalized epilepsy with absences (PGE) or nonepileptic children.

Method: Formal thought disorder was coded in 30 children with CPS, 24 children with PGE, and 61 nonepileptic children, and structured interview-based psychiatric diagnoses were obtained for the epileptic subjects.

Results: The CPS subjects had significantly more illogical thinking than the PGE and nonepileptic children.

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Objective: We examined potential early markers of schizophrenia using measures of formal thought disorder in offspring of parents with schizophrenia, other mental illness and no mental illness.

Methods: Two blind raters coded formal thought disorder in adolescent/early adult offspring of 42 schizophrenic, 39 other mental illness, and 36 no mental illness parents. In addition to parental diagnosis, we compared the individual offspring diagnosis with severity of formal thought disorder.

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Objective: To review the main areas of current research findings regarding the core deficits in autism and the implications of these findings for the practicing clinician.

Method: Behavioural, cognitive, emotional and neurophysiological aspects are covered with an emphasis on the importance of methodology.

Results: The implication of these findings for the treatment of autism is discussed.

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In a controlled observational study of young autistic children ages 3 to 5, responses to parental prohibition were compared to those of mental-age-matched mentally retarded and normal children. The children were prohibited from eating a candy offered to them by the experimenter. Behavioral response, affect, and gaze patterns were compared across the three groups.

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