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Godoy-Giménez M, García-Pérez Á, Cañadas F, Estévez AF, Sayans-Jiménez P. The Broad Autism Phenotype-International Test (BAP-IT): A two-domain-based test for the assessment of the broad autism phenotype. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2024:13623613241228887. [PMID: 38366857 DOI: 10.1177/13623613241228887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
LAY ABSTRACT The broad autism phenotype refers to a group of behaviors related to autism spectrum disorder, but that appear to a lesser extent. Its assessment has been performed through outdated broad autism phenotype/autism spectrum disorder definitions and tests. To address this problem, this study presents the development of a new test, the Broad Autism Phenotype-International Test, a 20-item measure consisting of two dimensions, SOCIAL-BAP and RIRE-BAP, targeting the two-domain operationalization of autism spectrum disorder in Spain and the United Kingdom. Unlike the Broad Autism Phenotype Questionnaire, this test received empirical support as a quick and effective broad autism phenotype measure that can facilitate both broad autism phenotype/autism spectrum disorder research and interventions. This is the first step to studying the BAP in several Spanish and English-speaking countries.
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Godoy-Giménez M, González-Rodríguez A, Estévez AF, Cañadas F, Sayans-Jiménez P. Applying a Rasch model to the Broad Autism Phenotype Questionnaire: item severity analysis and differential test functioning of the English and Spanish versions. CURRENT PSYCHOLOGY 2022. [DOI: 10.1007/s12144-022-02789-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AbstractThe broad autism phenotype (BAP) represents the elevated but nonclinical levels of autism-related expressions expanding them beyond the disorder threshold towards the general population and it is assessed worldwide using the Broad Autism Phenotype Questionnaire. In this study, we applied a Rasch item response approach to the Spanish and the English BAPQ versions. This approach allows us to test the proper functioning of each version, estimate which BAP behaviours are more likeable at different levels of severity, and study whether BAPQ item’s severities and orders could be considered equivalent between both versions. A Spanish community sample of 970 participants and an English of 533 ones completed either the Spanish or the English version of the BAPQ. The results revealed a lack of unidimensionality of the Pragmatic Language subscale in both tests and the Rigid subscale in the English version. Both Aloof subscale versions and the Spanish Rigid demonstrated adequate properties but with several items showing differential functioning in the case of Aloof. We conclude by highlighting the necessity of BAP measurements paralleling the current autism spectrum disorder structure, following the severity-dimensional conceptualization (behaviours are continuously distributed according to their severity), and suitable for being adapted to different languages.
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Brief Report: The Broad Autism Phenotype in Swedish Parents of Children With and Without Autism Spectrum Conditions. J Autism Dev Disord 2021; 52:4575-4582. [PMID: 34609695 PMCID: PMC9508042 DOI: 10.1007/s10803-021-05302-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2021] [Indexed: 10/25/2022]
Abstract
The broad autism phenotype (BAP) is a set of characteristics often observed in typically developing people with a genetic load for autism, such as parents of autistic children. The Broad Autism Phenotypic Questionnaire (BAPQ) is a 36-item questionnaire developed to identify the BAP in first-degree relatives of autistic people. We translated the BAPQ into Swedish and examined its psychometric properties in a Swedish sample consisting of 45 parents of children with ASC and 74 parents of non-autistic children. We found support for the original 3-factor structure (aloof, pragmatic language and rigid), good internal consistency and convergent validity with the Autism Quotient. Thus, the Swedish BAPQ exhibits acceptable psychometric properties and may be useful for assessing the BAP in non-clinical populations.
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Godoy-Giménez M, González-Rodríguez A, Cañadas F, Estévez AF, Sayans-Jiménez P. Is it Possible to Assess the Two-Domain Definition of the Broad Autism Phenotype Using the Available Measurement Tools? J Autism Dev Disord 2021; 52:2884-2895. [PMID: 34185239 PMCID: PMC9213296 DOI: 10.1007/s10803-021-05158-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2021] [Indexed: 11/28/2022]
Abstract
Although, the operationalization of the autism spectrum disorder has been updated around two domains, the broad autism phenotype (BAP) one has not. Additionally, the items of the three common BAP measures, the Broad Autism Phenotype Questionnaire (BAPQ), the Autism Quotient, and the Social Responsiveness Scale (SRS), remain organized around a non-consensual number of factors. We explored whether the items of these measures matched with the two-domain operationalization through a parallel analysis, which has suggested two main components, and two expert judgments which have assessed item wording, relevance, and construct representativeness. A remaining pool of 48 BAP-relevant items suggested a possible under-representation of two subdomains. Despite the relevance of all the BAPQ items, only the SRS ones tapped in all subdomains.
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Affiliation(s)
- M Godoy-Giménez
- Department of Psychology, University of Almeria, 04120, Almería, Spain
| | | | - F Cañadas
- Department of Psychology, University of Almeria, 04120, Almería, Spain.,CERNEP Research Centre, University of Almeria, 04120, Almería, Spain
| | - A F Estévez
- Department of Psychology, University of Almeria, 04120, Almería, Spain. .,CERNEP Research Centre, University of Almeria, 04120, Almería, Spain.
| | - P Sayans-Jiménez
- Department of Psychology, University of Almeria, 04120, Almería, Spain.
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Lin J, Fu X, Dai S, Zeng Y, Yang R, Liu R, Yang J, Shen Y, Ou J. The Broad Autism Phenotype Questionnaire (BAPQ): Strengths, weaknesses and future improvements in Chinese version. Asian J Psychiatr 2021; 60:102655. [PMID: 33882386 DOI: 10.1016/j.ajp.2021.102655] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 04/05/2021] [Indexed: 10/21/2022]
Abstract
Broad Autism Phenotype (BAP) refers to a set of symptoms or personality traits which similar but not meet the diagnostic criteria for autism in relatives of individuals with Autism Spetrum Disorders (ASD).The Broad Autism Phenotype Questionnaire (BAPQ) is one of the new and widely used assessment tools to measure BAP.It has been translated into 8 different languages and some versions were investigated the psychometric properties but not including Chinese version (BAPQ-C).This study aimed to analyze the reliability and validity of the BAPQ-C and explore its applicability in the Chinese population. 1,618 families were included in the study consisting of 890 ASD children and 728 typically developed(TD)children. Our results did not find a well-fitting three-factor(Aloof,Rigid,Pragmatic language) structure which is consistent with previous studies.But we formed a model that only included Aloof and Pragmatic language dimensions.The parameter after removing the rigid dimension was significantly better.This study indicated that the short version of Aloof and Pragmatic language sub-scales has good reliability and validity and can be used to study BAP in the Chinese population. Nevertheless, more studies are still needed to improve the psychometric properties of the BAPQ-C.
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Affiliation(s)
- Jingjing Lin
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China
| | - Xi Fu
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China; Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Si Dai
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China
| | - Ying Zeng
- Department of Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rushi Yang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Ruiting Liu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Jiaxin Yang
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China; Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yidong Shen
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China.
| | - Jianjun Ou
- National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital, Central South University, Hunan Medical Center for Mental Health, Changsha, Hunan, China.
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Sarovic D. A Unifying Theory for Autism: The Pathogenetic Triad as a Theoretical Framework. Front Psychiatry 2021; 12:767075. [PMID: 34867553 PMCID: PMC8637925 DOI: 10.3389/fpsyt.2021.767075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/27/2021] [Indexed: 12/27/2022] Open
Abstract
This paper presents a unifying theory for autism by applying the framework of a pathogenetic triad to the scientific literature. It proposes a deconstruction of autism into three contributing features (an autistic personality dimension, cognitive compensation, and neuropathological risk factors), and delineates how they interact to cause a maladaptive behavioral phenotype that may require a clinical diagnosis. The autistic personality represents a common core condition, which induces a set of behavioral issues when pronounced. These issues are compensated for by cognitive mechanisms, allowing the individual to remain adaptive and functional. Risk factors, both exogenous and endogenous ones, show pathophysiological convergence through their negative effects on neurodevelopment. This secondarily affects cognitive compensation, which disinhibits a maladaptive behavioral phenotype. The triad is operationalized and methods for quantification are presented. With respect to the breadth of findings in the literature that it can incorporate, it is the most comprehensive model yet for autism. Its main implications are that (1) it presents the broader autism phenotype as a non-pathological core personality domain, which is shared across the population and uncoupled from associated features such as low cognitive ability and immune dysfunction, (2) it proposes that common genetic variants underly the personality domain, and that rare variants act as risk factors through negative effects on neurodevelopment, (3) it outlines a common pathophysiological mechanism, through inhibition of neurodevelopment and cognitive dysfunction, by which a wide range of endogenous and exogenous risk factors lead to autism, and (4) it suggests that contributing risk factors, and findings of immune and autonomic dysfunction are clinically ascertained rather than part of the core autism construct.
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Affiliation(s)
- Darko Sarovic
- Gillberg Neuropsychiatry Centre, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden.,MedTech West, Gothenburg, Sweden
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Karmakar A, Bhattacharya M, Adhya J, Chatterjee S, Dogra AK. The trend of association between autism traits in mothers and severity of autism symptomatology in children. ADVANCES IN AUTISM 2020. [DOI: 10.1108/aia-01-2020-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose
Autism spectrum disorders (ASD) are heterogeneous disorders, and heterogeneity lies both at genetic and phenotypic levels. To better understand the etiology and pathway that may contribute to autism symptomatology, it is important to study milder expressions of autism characteristics – autistic traits or milder expressions of autism phenotype, especially in intergenerational context. This study aims to see the trend of association, if any, between child autism symptom and mothers’ autism phenotype as well as mothers’ theory of mind and to see if mothers’ theory of mind was associated with their own autistic traits.
Design/methodology/approach
Data were collected from 96 mothers of children with varying symptom severity of autism (mild, moderate and severe) using Autism Spectrum Quotient and faux pas recognition test. Analysis of variance, trend analysis and t-test were done.
Findings
Results showed a linear trend of relationship between mothers’ autism phenotype and child symptom severity. However, the groups did not have significant differences in theory of mind. Only a few components of theory of mind were found to be associated with autistic traits. These findings question the prevailing idea that theory of mind can be a reliable endophenotype of autism.
Research limitations/implications
There has been a lack of research assessing the possible link between parents’ autism phenotype and symptom severity of ASD children. This study is a preliminary step towards that direction. This study indicates a probability of shared genetic liability between mothers and offspring, which would have important consequences for understanding the mechanisms that lead to autism.
Practical implications
This study offers implications for treatment planning of those with clinical ASD. An awareness of parental factors is critical for any holistic intervention plan when a family seeks treatment for their child. This study suggests that while individualising interventions, clinicians may consider possible presence of high levels of autistic traits and related cognitive features present in the probands’ parents.
Originality/value
There has been lack of research assessing the possible link between parents’ autism phenotype and symptom severity of ASD children. This study, even though preliminary, is a step towards that direction. This study suggests that autism traits might be influenced by common genetic variation and indicates a probability of shared genetic liability between mothers and offspring, which would have important consequences for understanding the mechanisms that lead to autism.
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Lange-Küttner C, Korte MA, Stamouli C. Parents' Autistic Personality Traits and Sex-Biased Family Ratio Determine the Amount of Technical Toy Choice. Front Psychol 2019; 10:2101. [PMID: 31616336 PMCID: PMC6764165 DOI: 10.3389/fpsyg.2019.02101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 08/29/2019] [Indexed: 11/22/2022] Open
Abstract
We investigated the effect of parents' autism quotient (AQ), their sex and the sex of their children on their toy preference. In a computerized forced-choice shopping task, adults selected from cuddly and social role-playing toys (social toys), academic, music and sports toys (educational toys) and construction sets as well as cars (technical toys). A sex-balanced high and low AQ sample of 160 adults consisted of groups of parents of sons only, daughters only, sons and daughters, as well as of a group of adults without children (non-parents). The standard toy preference was social toys < educational toys < technical toys. Low AQ women were the only group to make a significantly higher amount of educational and a lower amount of technical toy choices. The mere presence of just sons increased technical toy choice in this experiment, while the mere presence of just daughters reduced technical toy choice both in men and high AQ individuals.
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Affiliation(s)
- Chris Lange-Küttner
- School of Social Sciences, London Metropolitan University, London, United Kingdom
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Wang Y, Xiao L, Chen RS, Chen C, Xun GL, Lu XZ, Shen YD, Wu RR, Xia K, Zhao JP, Ou JJ. Social impairment of children with autism spectrum disorder affects parental quality of life in different ways. Psychiatry Res 2018; 266:168-174. [PMID: 29864617 DOI: 10.1016/j.psychres.2018.05.057] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/09/2018] [Accepted: 05/23/2018] [Indexed: 01/10/2023]
Abstract
This study evaluated the life quality of Chinese parents of preschool children with autism spectrum disorder (ASD) and their association with child social impairment and childcare burden. The participants included 406 families of children with ASD and 513 families with typically developing (TD) children. The findings indicated that parents in the ASD group had a lower quality of life than parents in the TD group, whereas only mother of children with ASD experienced a greater childcare burden than mother with TD children. Lower parental quality of life were associated with higher social impairment of children. To further clarify the correlativity of child social impairment, parental quality of life and childcare burden, the mediation analyses were conducted. The results showed that childcare burden mediated the influence of child social impairment on maternal quality of life, while it has no mediating effect on fathers. It implies that social impairment of children affects parental quality of life in different ways.
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Affiliation(s)
- Ying Wang
- Department of Psychiatry and Mental Health Institute, Second Xiangya Hospital, Central South University; Chinese National Clinical Research Center on Mental Disorders (Xiangya); Chinese National Technology Institute on Mental Disorders; Hunan Key Laboratory of Psychiatry and Mental Health, 139 Middle Renmin Road, Changsha 410011, Hunan, PR China
| | - Lu Xiao
- Xiangtan Maternal and Child Care Service Centre, 295 Donghu Road, Xiangtan, Hunan, PR China
| | - Run-Sen Chen
- Department of Psychiatry, University of Oxford, OX3 7JX, UK
| | - Chen Chen
- Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, The Ministry of Justice, 1347 West Guang Fu Road, Shanghai 200063, PR China
| | - Guang-Lei Xun
- Shandong Mental Health Center, 49 East Wenhua Road, Jinan 250014, Shandong, PR China
| | - Xiao-Zi Lu
- Qingdao Mental Health Center, 229 Nanjing Road, Qingdao 266034, Shangdong, PR China
| | - Yi-Dong Shen
- Department of Psychiatry and Mental Health Institute, Second Xiangya Hospital, Central South University; Chinese National Clinical Research Center on Mental Disorders (Xiangya); Chinese National Technology Institute on Mental Disorders; Hunan Key Laboratory of Psychiatry and Mental Health, 139 Middle Renmin Road, Changsha 410011, Hunan, PR China
| | - Ren-Rong Wu
- Department of Psychiatry and Mental Health Institute, Second Xiangya Hospital, Central South University; Chinese National Clinical Research Center on Mental Disorders (Xiangya); Chinese National Technology Institute on Mental Disorders; Hunan Key Laboratory of Psychiatry and Mental Health, 139 Middle Renmin Road, Changsha 410011, Hunan, PR China
| | - Kun Xia
- The State Key Laboratory of Medical Genetics, No.110 Xiangya Road, Changsha 410078, Hunan, PR China
| | - Jing-Ping Zhao
- Department of Psychiatry and Mental Health Institute, Second Xiangya Hospital, Central South University; Chinese National Clinical Research Center on Mental Disorders (Xiangya); Chinese National Technology Institute on Mental Disorders; Hunan Key Laboratory of Psychiatry and Mental Health, 139 Middle Renmin Road, Changsha 410011, Hunan, PR China.
| | - Jian-Jun Ou
- Department of Psychiatry and Mental Health Institute, Second Xiangya Hospital, Central South University; Chinese National Clinical Research Center on Mental Disorders (Xiangya); Chinese National Technology Institute on Mental Disorders; Hunan Key Laboratory of Psychiatry and Mental Health, 139 Middle Renmin Road, Changsha 410011, Hunan, PR China.
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Rubenstein E, Chawla D. Broader autism phenotype in parents of children with autism: a systematic review of percentage estimates. JOURNAL OF CHILD AND FAMILY STUDIES 2018; 27:1705-1720. [PMID: 29731598 PMCID: PMC5933863 DOI: 10.1007/s10826-018-1026-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The broader autism phenotype (BAP) is a collection of sub-diagnostic autistic traits more common in families of individuals with autism spectrum disorder (ASD) than in the general population. BAP is a latent construct that can be defined using different domains, measured using multiple instruments, and reported using different techniques. Therefore, estimates of BAP may vary greatly across studies. Our objective was to systematically review studies that reported occurrence of BAP in parents of children with ASD in order to quantify and describe heterogeneity in estimates. We systematically searched PubMed and Scopus using PRISMA guidelines for studies quantifying percentage of parents of children with ASD who had BAP We identified 41 studies that measured BAP in parents of children with ASD. These studies used eight different instruments, four different forms of data collection, and had a wide range of sample sizes (N=4 to N=3299). Percentage with BAP ranged from 2.6% to 80%. BAP was more prevalent in fathers than mothers. Parental BAP may be an important tool for parsing heterogeneity in ASD etiology and for developing parent-mediated ASD interventions. However, the variety in measurement instruments and variability in study samples limits our ability to synthesize estimates. To improve measurement of BAP and increase consistency across studies, universal methods should be accepted and adopted across studies. A more consistent approach to BAP measurement may enable efficient etiologic research that can be meta-analyzed and may allow for a larger evidence base that can be used to account for BAP when developing parent-mediated interventions.
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Affiliation(s)
- Eric Rubenstein
- University of North Carolina Gillings School of Global Public Health, Department of Epidemiology, Chapel Hill, NC
- University of Wisconsin-Madison, Waisman Center, Madison, WI
| | - Devika Chawla
- University of North Carolina Gillings School of Global Public Health, Department of Epidemiology, Chapel Hill, NC
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Psychometric Properties of the Spanish Version of the Broad Autism Phenotype Questionnaire: Strengths, Weaknesses, and Future Improvements. J Autism Dev Disord 2017; 48:770-783. [DOI: 10.1007/s10803-017-3438-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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12
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Rubenstein E, Edmondson Pretzel R, Windham GC, Schieve LA, Wiggins LD, DiGuiseppi C, Olshan AF, Howard AG, Pence BW, Young L, Daniels J. The Broader Autism Phenotype in Mothers is Associated with Increased Discordance Between Maternal-Reported and Clinician-Observed Instruments that Measure Child Autism Spectrum Disorder. J Autism Dev Disord 2017; 47:3253-3266. [PMID: 28748335 PMCID: PMC5728366 DOI: 10.1007/s10803-017-3248-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Autism spectrum disorder (ASD) diagnosis relies on parent-reported and clinician-observed instruments. Sometimes, results between these instruments disagree. The broader autism phenotype (BAP) in parent-reporters may be associated with discordance. Study to Explore Early Development data (N = 712) were used to address whether mothers with BAP and children with ASD or non-ASD developmental disabilities were more likely than mothers without BAP to 'over-' or 'under-report' child ASD on ASD screeners or interviews compared with clinician observation or overall impression. Maternal BAP was associated with a child meeting thresholds on a maternal-reported screener or maternal interview when clinician ASD instruments or impressions did not (risk ratios: 1.30 to 2.85). Evidence suggests acknowledging and accounting for reporting discordances may be important when diagnosing ASD.
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Affiliation(s)
- Eric Rubenstein
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, 135 Dauer Dr, Chapel Hill, NC, 27599, USA.
| | - Rebecca Edmondson Pretzel
- University of North Carolina at Chapel Hill Center for Intellectual and Developmental Disabilities, 101 Renee Lynne Ct, Carrboro, NC, 27510, USA
| | - Gayle C Windham
- Division of Environmental and Occupational Disease Control, California Department of Public Health, 850 Marina Bay Pkwy, Bldg. P, Richmond, CA, 94804, USA
| | - Laura A Schieve
- Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities, 1600 Clifton Road, Atlanta, GA, 30329, USA
| | - Lisa D Wiggins
- Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities, 1600 Clifton Road, Atlanta, GA, 30329, USA
| | - Carolyn DiGuiseppi
- Department of Epidemiology, Colorado School of Public Health, Campus Box B119, 13001 E. 17th Place, Aurora, CO, 80045, USA
| | - Andrew F Olshan
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, 135 Dauer Dr, Chapel Hill, NC, 27599, USA
| | - Annie G Howard
- Department of Biostatistics, University of North Carolina Gillings School of Global Public Health, 137 East Franklin Street Room 6702 CB# 8030, Chapel Hill, NC, 27514, USA
| | - Brian W Pence
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, 135 Dauer Dr, Chapel Hill, NC, 27599, USA
| | - Lisa Young
- University of Pennsylvania School of Nursing, 420 Guardian Drive, Philadelphia, PA, 19104, USA
| | - Julie Daniels
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, 135 Dauer Dr, Chapel Hill, NC, 27599, USA
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