Publications by authors named "Anna Abbacchi"

Among the many race-based health disparities that have persistently plagued the US population, the disproportionate burden of adverse neurodevelopmental outcomes to Black children affected by autism spectrum disorder (ASD) is particularly devastating given its major lifelong consequences. Recently, in 3 successive reports from the Autism and Developmental Disabilities Monitoring (ADDM) program of the US Centers for Disease Control and Prevention (CDC) (birth cohort years 2014, 2016, and 2018), we and our collaborators reported that although the prevalence of community-diagnosed ASD had equalized for Black and non-Hispanic White (NHW) children in the United States, there has persisted a pronounced racial disparity in the proportion of ASD-affected children with comorbid intellectual disability (ID), on the order of 50% for Black children with ASD vs 20% for White children with ASD. Here, we provide data to support the following: much earlier diagnosis is possible; early diagnosis alone is not likely to close the ID comorbidity disparity; and judicious efforts over care as usual are necessary to ensure that Black children have access to timely implementation of developmental therapy, for which we observed promising associations with improved cognitive and adaptive outcomes in our sample.

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Objectives: African American (AA) children affected by autism spectrum disorder (ASD) experience delays in diagnosis and obstacles to service access, as well as a disproportionate burden of intellectual disability (ID) as documented in surveillance data recently published by the US Centers for Disease Control and Prevention. Our objective in this study was to analyze data from the largest-available repository of diagnostic and phenotypic information on AA children with ASD, and to explore the wide variation in outcome within the cohort as a function of sociodemographic risk and specific obstacles to service access for the purpose of informing a national approach to resolution of these disparities.

Methods: Parents of 584 AA children with autism consecutively enrolled in the Autism Genetic Resource Exchange across 4 US data collection sites completed event history calendar interviews of the diagnostic odysseys for their children with ASD.

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Deficits in reciprocal social behavior are a characterizing feature of autism spectrum disorder (ASD). Autism-related variation in reciprocal social behavior (AVR) in the general population is continuously distributed and highly heritable-a function of additive genetic influences that overlap substantially with those which engender clinical autistic syndromes. This is the first long-term prospective study of the stability of AVR from childhood through early adulthood, conducted via serial ratings using the Social Responsiveness Scale, in a cohort-sequential study involving children with ASD, other psychiatric conditions, and their siblings (N = 602, ages = 2.

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Background: Recent studies have indicated that quantitative autistic traits (QATs) of parents reflect inherited liabilities that may index background genetic risk for clinical autism spectrum disorder (ASD) in their offspring. Moreover, preferential mating for QATs has been observed as a potential factor in concentrating autistic liabilities in some families across generations. Heretofore, intergenerational studies of QATs have focused almost exclusively on Caucasian populations-the present study explored these phenomena in a well-characterized Hispanic population.

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Background: Few disaster studies have specifically examined personality in association with exposure to disaster and development of posttraumatic stress disorder (PTSD). A study of survivors of the Oklahoma City bombing examined PTSD and personality measured after the disaster.

Methods: In a random sample of 255 survivors from a bombing survivor registry, 151 (59%) completed both full PTSD and personality assessments using the Diagnostic Interview Schedule and the Temperament and Character Inventory, respectively.

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The standard of care treatment for chronic hepatitis C viral infection (HCV) is a combination of pegylated interferon alfa and ribavirin for 24-48 weeks according to the virus genotype. This therapy is known to have multiple neuropsychiatric side effects. A major concern when evaluating a patient for HCV treatment with a known history of a psychiatric disorder is the risk that the patient's psychiatric disorder will flare or become unmanageable.

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Objective: Although the symptoms of autism exhibit quantitative distributions in nature, estimates of recurrence risk in families have never previously considered or incorporated quantitative characterization of the autistic phenotype among siblings.

Method: The authors report the results of quantitative characterization of 2,920 children from 1,235 families participating in a national volunteer register, with at least one child clinically affected by an autism spectrum disorder and at least one full biological sibling.

Results: A traditionally defined autism spectrum disorder in an additional child occurred in 10.

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This study examines the relationship between sensory responsiveness and social severity in children with high functioning autism spectrum disorders (HFASD; N = 36) and age-matched controls (N = 26) between 6 and 10 years old. Significant relationships were found between social responsiveness scale scores and each of the six sensory profile sensory system scores for children with HFASD and controls. Multivariate regression analyses revealed atypical scores from multisensory responsiveness, and responsiveness of the proximal senses of oral sensory/olfactory and touch as the strongest predictors of greater social impairment in the participants.

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The present study examines co-occurring psychiatric syndromes in a well-characterized sample of youths with autism spectrum disorders (ASD; n = 177) and their siblings (n = 148), reported independently by parents and teachers. In ASD, parents reported substantial comorbidity with affective (26%), anxiety (25%), attentional (25%), conduct (16%), oppositional (15%), and somatic problems (6%). Teachers reported a much lower prevalence.

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Article Synopsis
  • Recent research indicates that autistic social impairment (ASI) is not only present in children with pervasive developmental disorders (PDD) but also subtly manifests in their family members.
  • The study followed boys aged 3 to 18, comparing twin pairs and clinical samples over time while using the Social Responsiveness Scale (SRS) to measure ASI.
  • Results showed that while ASI scores generally improved, individual outcomes varied significantly based on factors like initial severity and family history, suggesting that ASI has both heritable traits and potential for tracking treatment responses.
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Recent research has suggested that the mode of inheritance for simplex autism (SA, one individual in the family affected) may be distinct from that for multiplex autism (MA, two or more individuals affected). Since sub clinical autistic traits have been observed in "unaffected" relatives of children with autism, we explored whether the distributions of such traits in families supported differential modes of genetic transmission for SA and MA autism. We measured patterns of familial aggregation of quantitative autistic traits (QAT) in children and parents in 80 SA families and 210 MA families, using the Social Responsiveness Scale.

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Objective: Teachers routinely observe children in the naturalistic social contexts of their classrooms and provide extremely important input in the evaluation of numerous psychiatric syndromes. Their precision in ascertaining and quantifying autistic symptomatology has not previously been established. In this study, we compared teachers' ratings of autistic symptomatology with those derived from parents, expert clinicians, and trained raters.

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Both the broad and narrow phenotypes of autism have been consistently observed in family members of affected individuals. Additionally, autism spectrum disorders (ASDs) present four times more often in males than in females, for reasons that are currently unknown. In this study, we examined whether there were differences in familial loading of ASD among families of male versus female probands.

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Aim: To assess the degree to which methodological differences might influence estimates of prevalence and correlates of substance use and disorders by comparing results from two recent surveys administered to nationally representative US samples.

Methods: Post-hoc comparison of data from the 2002 National Survey on Drug Use and Health (NSDUH) with data from the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) administered in 2001-02.

Results: Prevalence estimates for all substance use outcomes were higher in the NSDUH than in the NESARC; ratios of NSDUH to NESARC prevalences ranged from 2.

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Autism spectrum disorders (ASDs) are characterized by correlated deficiencies in social and language development. This study explored a fundamental aspect of auditory information processing (AIP) that is dependent on social experience and critical to early language development: the ability to compartmentalize close-sounding speech sounds into singular phonemes. We examined this ability by assessing whether close-sounding non-native language phonemes were more likely to be perceived as disparate sounds by school-aged children with high-functioning ASD (n = 27), than by unaffected control subjects (n = 35).

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Given a growing emphasis on early intervention for children with autism, valid quantitative tools for measuring treatment response are needed. The Social Responsiveness Scale (SRS) is a brief (15-20 minute) quantitative measure of autistic traits in 4-to 18-year-olds, for which a version for 3-year-olds was recently developed. We obtained serial SRS measurements on 73 preschool children with (n = 51) and without (n = 22) autism spectrum conditions.

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Objective: Sibling recurrence risk in autism has been estimated to be approximately 10%. This study investigated subsyndromal autistic impairments among siblings of probands with pervasive developmental disorders.

Method: The authors used the Social Responsiveness Scale to obtain quantitative assessments of autistic social impairment in three groups of proband-sibling pairs: 1) autistic children from multiple-incidence families and their closest in age nonautistic brothers (N=49 pairs); 2) children with any pervasive developmental disorder, including autism, and their closest-in-age brothers (N=100 pairs), and 3) children with psychopathology unrelated to autism and their closest-in-age brothers (N=45 pairs).

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