Are Autistic Traits Measured Equivalently in Individuals With and Without An Autism Spectrum Disorder? An Invariance Analysis of the Autism Spectrum Quotient Short Form / Aja L. MURRAY in Journal of Autism and Developmental Disorders, 44-1 (January 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-1 (January 2014) . - p.55-64 Titre : Are Autistic Traits Measured Equivalently in Individuals With and Without An Autism Spectrum Disorder? An Invariance Analysis of the Autism Spectrum Quotient Short Form Type de document : Texte imprimé et/ou numérique Auteurs : Aja L. MURRAY, Auteur ; Tom BOOTH, Auteur ; Karen MCKENZIE, Auteur ; Renate KUENSSBERG, Auteur ; Michael O’DONNELL, Auteur Article en page(s) : p.55-64 Langues : Anglais (eng) Mots-clés : Autism  Autistic traits  Measurement invariance  Confirmatory factor analysis  Autism spectrum quotient Index. décimale : PER Périodiques Résumé : It is common to administer measures of autistic traits to those without autism spectrum disorders (ASDs) with, for example, the aim of understanding autistic personality characteristics in non-autistic individuals. Little research has examined the extent to which measures of autistic traits actually measure the same traits in the same way across those with and without an ASD. We addressed this question using a multi-group confirmatory factor invariance analysis of the Autism Quotient Short Form (AQ-S: Hoekstra et al. in J Autism Dev Disord 41(5):589–596, 2011) across those with (n = 148) and without (n = 168) ASD. Metric variance (equality of factor loadings), but not scalar invariance (equality of thresholds), held suggesting that the AQ-S measures the same latent traits in both groups, but with a bias in the manner in which trait levels are estimated. We, therefore, argue that the AQ-S can be used to investigate possible causes and consequences of autistic traits in both groups separately, but caution is due when combining or comparing levels of autistic traits across the two groups. En ligne : http://dx.doi.org/10.1007/s10803-013-1851-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=220 [article] Are Autistic Traits Measured Equivalently in Individuals With and Without An Autism Spectrum Disorder? An Invariance Analysis of the Autism Spectrum Quotient Short Form [Texte imprimé et/ou numérique] / Aja L. MURRAY, Auteur ; Tom BOOTH, Auteur ; Karen MCKENZIE, Auteur ; Renate KUENSSBERG, Auteur ; Michael O’DONNELL, Auteur . - p.55-64. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-1 (January 2014) . - p.55-64 Mots-clés : Autism  Autistic traits  Measurement invariance  Confirmatory factor analysis  Autism spectrum quotient Index. décimale : PER Périodiques Résumé : It is common to administer measures of autistic traits to those without autism spectrum disorders (ASDs) with, for example, the aim of understanding autistic personality characteristics in non-autistic individuals. Little research has examined the extent to which measures of autistic traits actually measure the same traits in the same way across those with and without an ASD. We addressed this question using a multi-group confirmatory factor invariance analysis of the Autism Quotient Short Form (AQ-S: Hoekstra et al. in J Autism Dev Disord 41(5):589–596, 2011) across those with (n = 148) and without (n = 168) ASD. Metric variance (equality of factor loadings), but not scalar invariance (equality of thresholds), held suggesting that the AQ-S measures the same latent traits in both groups, but with a bias in the manner in which trait levels are estimated. We, therefore, argue that the AQ-S can be used to investigate possible causes and consequences of autistic traits in both groups separately, but caution is due when combining or comparing levels of autistic traits across the two groups. En ligne : http://dx.doi.org/10.1007/s10803-013-1851-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=220

Screening for intellectual disability in autistic people: A brief report / Karen MCKENZIE in Research in Autism Spectrum Disorders, 100 (February 2023)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 100 (February 2023) . - 102076 Titre : Screening for intellectual disability in autistic people: A brief report Type de document : Texte imprimé et/ou numérique Auteurs : Karen MCKENZIE, Auteur ; Dale METCALFE, Auteur ; Aja L. MURRAY, Auteur Article en page(s) : 102076 Langues : Anglais (eng) Mots-clés : Intellectual disability  Autism spectrum disorder  Screening  Child and adolescent intellectual disability screening questionnaire Index. décimale : PER Périodiques Résumé : Background There is high co-occurrence between intellectual disability and Autism Spectrum Disorder (ASD). It is important to identify people who have both conditions for clinical and research reasons. This study explored if the Child and Adolescent Intellectual Disability Screening Questionnaire (CAIDS-Q) and Learning Disability Screening Questionnaire (LDSQ) could accurately identify intellectual disability in autistic children and adults respectively. Method Pre-existing CAIDS-Q data for 40 autistic children and LDSQ data for 27 autistic adults were used. The participants were classified as likely to have an intellectual disability or not based on the age-appropriate cut-off score on the relevant screening tools. This was compared with their clinical diagnosis of intellectual disability. Results The sensitivity, specificity, and positive and negative predictive values, for the CAIDS-Q were 93.1 %, 88.5 %, 90 % and 92 % respectively. The corresponding figures for the LDSQ were 75 %, 95.6 %, 75 %, and 95.6 %. Conclusions The values for the CAIDS-Q were broadly consistent with figures found in previous research. The sensitivity and PPV figures for the LDSQ, were somewhat lower. The specificity and sensitivity values for both measures were above the threshold for levels that are generally considered to be acceptable for a developmental screening tool. The results suggest that the CAIDS-Q and LDSQ may be appropriate measures to screen for intellectual disability in autistic people. En ligne : https://doi.org/10.1016/j.rasd.2022.102076 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491 [article] Screening for intellectual disability in autistic people: A brief report [Texte imprimé et/ou numérique] / Karen MCKENZIE, Auteur ; Dale METCALFE, Auteur ; Aja L. MURRAY, Auteur . - 102076. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 100 (February 2023) . - 102076 Mots-clés : Intellectual disability  Autism spectrum disorder  Screening  Child and adolescent intellectual disability screening questionnaire Index. décimale : PER Périodiques Résumé : Background There is high co-occurrence between intellectual disability and Autism Spectrum Disorder (ASD). It is important to identify people who have both conditions for clinical and research reasons. This study explored if the Child and Adolescent Intellectual Disability Screening Questionnaire (CAIDS-Q) and Learning Disability Screening Questionnaire (LDSQ) could accurately identify intellectual disability in autistic children and adults respectively. Method Pre-existing CAIDS-Q data for 40 autistic children and LDSQ data for 27 autistic adults were used. The participants were classified as likely to have an intellectual disability or not based on the age-appropriate cut-off score on the relevant screening tools. This was compared with their clinical diagnosis of intellectual disability. Results The sensitivity, specificity, and positive and negative predictive values, for the CAIDS-Q were 93.1 %, 88.5 %, 90 % and 92 % respectively. The corresponding figures for the LDSQ were 75 %, 95.6 %, 75 %, and 95.6 %. Conclusions The values for the CAIDS-Q were broadly consistent with figures found in previous research. The sensitivity and PPV figures for the LDSQ, were somewhat lower. The specificity and sensitivity values for both measures were above the threshold for levels that are generally considered to be acceptable for a developmental screening tool. The results suggest that the CAIDS-Q and LDSQ may be appropriate measures to screen for intellectual disability in autistic people. En ligne : https://doi.org/10.1016/j.rasd.2022.102076 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491

Structural validation of the abridged Autism Spectrum Quotient–Short Form in a clinical sample of people with autism spectrum disorders / Renate KUENSSBERG in Autism, 18-2 (February 2014)  

Public ISBD [article]  inAutism > 18-2 (February 2014) . - p.69-75 Titre : Structural validation of the abridged Autism Spectrum Quotient–Short Form in a clinical sample of people with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Renate KUENSSBERG, Auteur ; Aja L. MURRAY, Auteur ; Tom BOOTH, Auteur ; Karen MCKENZIE, Auteur Article en page(s) : p.69-75 Langues : Anglais (eng) Mots-clés : Autism Spectrum Quotient  confirmatory factor analysis  psychometric evaluation Index. décimale : PER Périodiques Résumé : The primary aim of this article was to provide a structural validation of the 28-item Autism Spectrum Quotient–Short Form questionnaire in a sample of adults with clinically diagnosed autism spectrum disorders (n = 148). Confirmatory factor analysis demonstrated that the proposed structure, comprising a second-order Social Skills factor subsuming first-order factors of Social Skills, Routine, Switching and Imagination, and a Numbers/Patterns factor showed good acceptable fit to the data (? 2 = 464.27(345), p .05; comparative fit index = .91; Tucker Lewis index = .90; root mean squared error of approximation = .048; weighted root mean square residual = 0.98). Summed mean scores for the total sample, and males and females separately, showed no significant differences to previously reported means, with the exception of Numbers/Patterns, for which the current sample reported significantly lower means in both males (t = 3.37, p 0.001) and females (t = 2.33, p 0.05). The results provide support for both the proposed structure of the AQ-S and the stability of total and subscale mean scores in different samples of participants with autism spectrum disorder diagnoses. En ligne : http://dx.doi.org/10.1177/1362361312467708 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=223 [article] Structural validation of the abridged Autism Spectrum Quotient–Short Form in a clinical sample of people with autism spectrum disorders [Texte imprimé et/ou numérique] / Renate KUENSSBERG, Auteur ; Aja L. MURRAY, Auteur ; Tom BOOTH, Auteur ; Karen MCKENZIE, Auteur . - p.69-75. Langues : Anglais (eng) in Autism > 18-2 (February 2014) . - p.69-75 Mots-clés : Autism Spectrum Quotient  confirmatory factor analysis  psychometric evaluation Index. décimale : PER Périodiques Résumé : The primary aim of this article was to provide a structural validation of the 28-item Autism Spectrum Quotient–Short Form questionnaire in a sample of adults with clinically diagnosed autism spectrum disorders (n = 148). Confirmatory factor analysis demonstrated that the proposed structure, comprising a second-order Social Skills factor subsuming first-order factors of Social Skills, Routine, Switching and Imagination, and a Numbers/Patterns factor showed good acceptable fit to the data (? 2 = 464.27(345), p .05; comparative fit index = .91; Tucker Lewis index = .90; root mean squared error of approximation = .048; weighted root mean square residual = 0.98). Summed mean scores for the total sample, and males and females separately, showed no significant differences to previously reported means, with the exception of Numbers/Patterns, for which the current sample reported significantly lower means in both males (t = 3.37, p 0.001) and females (t = 2.33, p 0.05). The results provide support for both the proposed structure of the AQ-S and the stability of total and subscale mean scores in different samples of participants with autism spectrum disorder diagnoses. En ligne : http://dx.doi.org/10.1177/1362361312467708 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=223

The relation between practice that is consistent with NICE guideline 142 recommendations and waiting times within Autism Spectrum Disorder diagnostic services / Karen MCKENZIE in Research in Autism Spectrum Disorders, 26 (June 2016)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 26 (June 2016) . - p.10-15 Titre : The relation between practice that is consistent with NICE guideline 142 recommendations and waiting times within Autism Spectrum Disorder diagnostic services Type de document : Texte imprimé et/ou numérique Auteurs : Karen MCKENZIE, Auteur ; Marion RUTHERFORD, Auteur ; Kirsty FORSYTH, Auteur ; Anne O’HARE, Auteur ; IAIN MCCLURE, Auteur ; Aja L. MURRAY, Auteur ; Linda IRVINE, Auteur Article en page(s) : p.10-15 Langues : Anglais (eng) Mots-clés : Clinical guidelines  Wait times  Diagnosis  Autism Spectrum Disorder  NICE Index. décimale : PER Périodiques Résumé : AbstractBackground This study explores the extent to which recommendations from the National Institute of Health and Care Excellence (NICE) 142 guidelines, section 9.2 (relating to identification, assessment and diagnosis) reflected existing routine clinical practice in Autism Spectrum Disorder (ASD) diagnosing services in Scotland; and whether there was a significant relation between routine practice which more closely reflected these recommendations and waiting times. Method A cross-sectional, retrospective case note analysis of recently diagnosed adults, in eight ASD services across Scotland. Results The study found that the existing practice of the participating services was consistent with 14 (maximum number) of the included recommendations in at least half of cases analysed (range 37–70 cases) and was not related to increased total waiting time for diagnosis. Conclusion The results, based only on the included recommendations, suggest that the section 9.2 recommendations can be integrated into clinical practice in Scotland with relative ease and that it is unlikely to have a negative impact on waiting times. En ligne : http://dx.doi.org/10.1016/j.rasd.2016.03.002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285 [article] The relation between practice that is consistent with NICE guideline 142 recommendations and waiting times within Autism Spectrum Disorder diagnostic services [Texte imprimé et/ou numérique] / Karen MCKENZIE, Auteur ; Marion RUTHERFORD, Auteur ; Kirsty FORSYTH, Auteur ; Anne O’HARE, Auteur ; IAIN MCCLURE, Auteur ; Aja L. MURRAY, Auteur ; Linda IRVINE, Auteur . - p.10-15. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 26 (June 2016) . - p.10-15 Mots-clés : Clinical guidelines  Wait times  Diagnosis  Autism Spectrum Disorder  NICE Index. décimale : PER Périodiques Résumé : AbstractBackground This study explores the extent to which recommendations from the National Institute of Health and Care Excellence (NICE) 142 guidelines, section 9.2 (relating to identification, assessment and diagnosis) reflected existing routine clinical practice in Autism Spectrum Disorder (ASD) diagnosing services in Scotland; and whether there was a significant relation between routine practice which more closely reflected these recommendations and waiting times. Method A cross-sectional, retrospective case note analysis of recently diagnosed adults, in eight ASD services across Scotland. Results The study found that the existing practice of the participating services was consistent with 14 (maximum number) of the included recommendations in at least half of cases analysed (range 37–70 cases) and was not related to increased total waiting time for diagnosis. Conclusion The results, based only on the included recommendations, suggest that the section 9.2 recommendations can be integrated into clinical practice in Scotland with relative ease and that it is unlikely to have a negative impact on waiting times. En ligne : http://dx.doi.org/10.1016/j.rasd.2016.03.002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=285

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