Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders / Ryan A. STEVENSON in Journal of Autism and Developmental Disorders, 44-6 (June 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1470-1477 Titre : Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.1470-1477 Langues : Anglais (eng) Mots-clés : Autism  Sensory processing  Multisensory integration  Speech perception  Audiovisual  McGurk effect Index. décimale : PER Périodiques Résumé : Atypical communicative abilities are a core marker of Autism Spectrum Disorders (ASD). A number of studies have shown that, in addition to auditory comprehension differences, individuals with autism frequently show atypical responses to audiovisual speech, suggesting a multisensory contribution to these communicative differences from their typically developing peers. To shed light on possible differences in the maturation of audiovisual speech integration, we tested younger (ages 6–12) and older (ages 13–18) children with and without ASD on a task indexing such multisensory integration. To do this, we used the McGurk effect, in which the pairing of incongruent auditory and visual speech tokens typically results in the perception of a fused percept distinct from the auditory and visual signals, indicative of active integration of the two channels conveying speech information. Whereas little difference was seen in audiovisual speech processing (i.e., reports of McGurk fusion) between the younger ASD and TD groups, there was a significant difference at the older ages. While TD controls exhibited an increased rate of fusion (i.e., integration) with age, children with ASD failed to show this increase. These data suggest arrested development of audiovisual speech integration in ASD. The results are discussed in light of the extant literature and necessary next steps in research. En ligne : http://dx.doi.org/10.1007/s10803-013-1992-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233 [article] Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur . - p.1470-1477. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1470-1477 Mots-clés : Autism  Sensory processing  Multisensory integration  Speech perception  Audiovisual  McGurk effect Index. décimale : PER Périodiques Résumé : Atypical communicative abilities are a core marker of Autism Spectrum Disorders (ASD). A number of studies have shown that, in addition to auditory comprehension differences, individuals with autism frequently show atypical responses to audiovisual speech, suggesting a multisensory contribution to these communicative differences from their typically developing peers. To shed light on possible differences in the maturation of audiovisual speech integration, we tested younger (ages 6–12) and older (ages 13–18) children with and without ASD on a task indexing such multisensory integration. To do this, we used the McGurk effect, in which the pairing of incongruent auditory and visual speech tokens typically results in the perception of a fused percept distinct from the auditory and visual signals, indicative of active integration of the two channels conveying speech information. Whereas little difference was seen in audiovisual speech processing (i.e., reports of McGurk fusion) between the younger ASD and TD groups, there was a significant difference at the older ages. While TD controls exhibited an increased rate of fusion (i.e., integration) with age, children with ASD failed to show this increase. These data suggest arrested development of audiovisual speech integration in ASD. The results are discussed in light of the extant literature and necessary next steps in research. En ligne : http://dx.doi.org/10.1007/s10803-013-1992-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233

Cross-modal generalization of receptive and expressive vocabulary in children with autism spectrum disorder / Pumpki L. SU in Autism & Developmental Language Impairments, 4 (January-December 2019)  

Public ISBD [article]  inAutism & Developmental Language Impairments > 4 (January-December 2019) Titre : Cross-modal generalization of receptive and expressive vocabulary in children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Pumpki L. SU, Auteur ; George CASTLE, Auteur ; Stephen M. CAMARATA, Auteur Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background and aimsWord learning is an area that poses a particular challenge to children with autism spectrum disorder. A unique challenge for this population is generalization of learned skills across new learning contexts. In clinical settings, a common assumption in teaching vocabulary for children with autism spectrum disorder is that learning in one modality will generalize incidentally to untreated modalities, but very few studies have evaluated the validity of this assumption. The purpose of this study was to investigate receptive and expressive word acquisition and cross-modal generalization in children with autism spectrum disorder.MethodsA single-case parallel treatments design was used to compare word learning and cross-modal generalization in children with autism spectrum disorder. Ten children with autism spectrum disorder were taught unfamiliar vocabulary words in a combined storybook and play intervention. For each child, half of the target words were trained expressively and the other half were trained receptively by random assignment. No direct cross-modal instruction was delivered. A series of probe sessions were completed to assess participants? within-modal learning and cross-modal generalization of vocabulary learning.ResultsAll children learned target words in both receptive and expressive conditions, as evidenced by an average of 80% accuracy across three trials at the end of each intervention. Overall, cross-modal generalization was higher for the expressive-to-receptive direction than for the receptive-to expressive direction. Nine out of ten children demonstrated successful cross-modal generalization on the expressive-to-receptive probes and only three children demonstrated successful cross-modal generalization on the receptive-to-expressive probes. Large variability was observed with regard to number of intervention sessions needed to reach mastery criterion and there were individual patterns of word learning.ConclusionContrary to the assumption that vocabulary learning will be ?automatically? generalized across modalities, results from this study indicate that cross-modal generalization at the word level is not automatic nor consistent in children with autism spectrum disorder, particularly in the receptive-to-expressive direction.ImplicationsThe finding that more children demonstrated expressive-to-receptive generalization than the opposite direction suggests that targeting expressive vocabulary first with the goal of incidentally increasing receptive vocabulary may be more efficient than starting with the receptive modality. Additionally, the finding that not all children demonstrated successful expressive-to-receptive cross-modal generalization indicates that teaching vocabulary in the expressive modality exclusively does not guarantee receptive understanding in this population. We recommend that practitioners periodically monitor children?s vocabulary learning in both modalities or set an explicit generalization goal to ensure complete learning of trained words. En ligne : https://doi.org/10.1177/2396941518824495 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387 [article] Cross-modal generalization of receptive and expressive vocabulary in children with autism spectrum disorder [Texte imprimé et/ou numérique] / Pumpki L. SU, Auteur ; George CASTLE, Auteur ; Stephen M. CAMARATA, Auteur. Langues : Anglais (eng) in Autism & Developmental Language Impairments > 4 (January-December 2019) Index. décimale : PER Périodiques Résumé : Background and aimsWord learning is an area that poses a particular challenge to children with autism spectrum disorder. A unique challenge for this population is generalization of learned skills across new learning contexts. In clinical settings, a common assumption in teaching vocabulary for children with autism spectrum disorder is that learning in one modality will generalize incidentally to untreated modalities, but very few studies have evaluated the validity of this assumption. The purpose of this study was to investigate receptive and expressive word acquisition and cross-modal generalization in children with autism spectrum disorder.MethodsA single-case parallel treatments design was used to compare word learning and cross-modal generalization in children with autism spectrum disorder. Ten children with autism spectrum disorder were taught unfamiliar vocabulary words in a combined storybook and play intervention. For each child, half of the target words were trained expressively and the other half were trained receptively by random assignment. No direct cross-modal instruction was delivered. A series of probe sessions were completed to assess participants? within-modal learning and cross-modal generalization of vocabulary learning.ResultsAll children learned target words in both receptive and expressive conditions, as evidenced by an average of 80% accuracy across three trials at the end of each intervention. Overall, cross-modal generalization was higher for the expressive-to-receptive direction than for the receptive-to expressive direction. Nine out of ten children demonstrated successful cross-modal generalization on the expressive-to-receptive probes and only three children demonstrated successful cross-modal generalization on the receptive-to-expressive probes. Large variability was observed with regard to number of intervention sessions needed to reach mastery criterion and there were individual patterns of word learning.ConclusionContrary to the assumption that vocabulary learning will be ?automatically? generalized across modalities, results from this study indicate that cross-modal generalization at the word level is not automatic nor consistent in children with autism spectrum disorder, particularly in the receptive-to-expressive direction.ImplicationsThe finding that more children demonstrated expressive-to-receptive generalization than the opposite direction suggests that targeting expressive vocabulary first with the goal of incidentally increasing receptive vocabulary may be more efficient than starting with the receptive modality. Additionally, the finding that not all children demonstrated successful expressive-to-receptive cross-modal generalization indicates that teaching vocabulary in the expressive modality exclusively does not guarantee receptive understanding in this population. We recommend that practitioners periodically monitor children?s vocabulary learning in both modalities or set an explicit generalization goal to ensure complete learning of trained words. En ligne : https://doi.org/10.1177/2396941518824495 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387

Definitions of Empirically Supported Treatment / Robert L. KOEGEL in Journal of Autism and Developmental Disorders, 40-4 (April 2010)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 40-4 (April 2010) . - p.515-517 Titre : Definitions of Empirically Supported Treatment Type de document : Texte imprimé et/ou numérique Auteurs : Robert L. KOEGEL, Auteur ; Lynn KERN KOEGEL, Auteur ; Stephen M. CAMARATA, Auteur Année de publication : 2010 Article en page(s) : p.515-517 Note générale : Article Open Access Langues : Anglais (eng) Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1007/s10803-009-0933-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=993 [article] Definitions of Empirically Supported Treatment [Texte imprimé et/ou numérique] / Robert L. KOEGEL, Auteur ; Lynn KERN KOEGEL, Auteur ; Stephen M. CAMARATA, Auteur . - 2010 . - p.515-517. Article Open Access Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 40-4 (April 2010) . - p.515-517 Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1007/s10803-009-0933-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=993

Definitions of Nonverbal and Minimally Verbal in Research for Autism: A Systematic Review of the Literature / Lynn KERN KOEGEL in Journal of Autism and Developmental Disorders, 50-8 (August 2020)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 50-8 (August 2020) . - p.2957-2972 Titre : Definitions of Nonverbal and Minimally Verbal in Research for Autism: A Systematic Review of the Literature Type de document : Texte imprimé et/ou numérique Auteurs : Lynn KERN KOEGEL, Auteur ; Katherine M. BRYAN, Auteur ; Pumpki L. SU, Auteur ; Mohini VAIDYA, Auteur ; Stephen M. CAMARATA, Auteur Article en page(s) : p.2957-2972 Langues : Anglais (eng) Mots-clés : Autism  Communication treatment  Expressive words  Minimally verbal  Nonverbal  authors have no conflicts of interest to report. Index. décimale : PER Périodiques Résumé : This systematic review examined definitions of "nonverbal" or "minimally verbal" and assessment measures used to evaluate communication in intervention studies focusing on improving expressive verbal communication in children with autism spectrum disorder (ASD). We reviewed sample size, number of participants, participant age, and male/female representation. Our analysis yielded relatively few studies with non/minimally verbal children with ASD focusing on verbal expressive communication. Further, we found large inconsistencies in measures used, definitions of "nonverbal" and "minimally verbal", and ages targeted. Guidelines are suggested to create a more uniform assessment protocol with systematic descriptions of early communication learners as a foundational step for understanding the heterogeneity in this group and replicating research findings for this subgroup of children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-020-04402-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428 [article] Definitions of Nonverbal and Minimally Verbal in Research for Autism: A Systematic Review of the Literature [Texte imprimé et/ou numérique] / Lynn KERN KOEGEL, Auteur ; Katherine M. BRYAN, Auteur ; Pumpki L. SU, Auteur ; Mohini VAIDYA, Auteur ; Stephen M. CAMARATA, Auteur . - p.2957-2972. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 50-8 (August 2020) . - p.2957-2972 Mots-clés : Autism  Communication treatment  Expressive words  Minimally verbal  Nonverbal  authors have no conflicts of interest to report. Index. décimale : PER Périodiques Résumé : This systematic review examined definitions of "nonverbal" or "minimally verbal" and assessment measures used to evaluate communication in intervention studies focusing on improving expressive verbal communication in children with autism spectrum disorder (ASD). We reviewed sample size, number of participants, participant age, and male/female representation. Our analysis yielded relatively few studies with non/minimally verbal children with ASD focusing on verbal expressive communication. Further, we found large inconsistencies in measures used, definitions of "nonverbal" and "minimally verbal", and ages targeted. Guidelines are suggested to create a more uniform assessment protocol with systematic descriptions of early communication learners as a foundational step for understanding the heterogeneity in this group and replicating research findings for this subgroup of children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-020-04402-w Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428

Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders / Ryan A. STEVENSON in Journal of Autism and Developmental Disorders, 44-12 (December 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-12 (December 2014) . - p.3161-3167 Titre : Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.3161-3167 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Sensory processing  Audiovisual  Multisensory integration  Audition  Vision Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) exhibit alterations in sensory processing, including changes in the integration of information across the different sensory modalities. In the current study, we used the sound-induced flash illusion to assess multisensory integration in children with ASD and typically-developing (TD) controls. Thirty-one children with ASD and 31 age and IQ matched TD children (average age = 12 years) were presented with simple visual (i.e., flash) and auditory (i.e., beep) stimuli of varying number. In illusory conditions, a single flash was presented with 2–4 beeps. In TD children, these conditions generally result in the perception of multiple flashes, implying a perceptual fusion across vision and audition. In the present study, children with ASD were significantly less likely to perceive the illusion relative to TD controls, suggesting that multisensory integration and cross-modal binding may be weaker in some children with ASD. These results are discussed in the context of previous findings for multisensory integration in ASD and future directions for research. En ligne : http://dx.doi.org/10.1007/s10803-014-2179-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243 [article] Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur . - p.3161-3167. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-12 (December 2014) . - p.3161-3167 Mots-clés : Autism spectrum disorders  Sensory processing  Audiovisual  Multisensory integration  Audition  Vision Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) exhibit alterations in sensory processing, including changes in the integration of information across the different sensory modalities. In the current study, we used the sound-induced flash illusion to assess multisensory integration in children with ASD and typically-developing (TD) controls. Thirty-one children with ASD and 31 age and IQ matched TD children (average age = 12 years) were presented with simple visual (i.e., flash) and auditory (i.e., beep) stimuli of varying number. In illusory conditions, a single flash was presented with 2–4 beeps. In TD children, these conditions generally result in the perception of multiple flashes, implying a perceptual fusion across vision and audition. In the present study, children with ASD were significantly less likely to perceive the illusion relative to TD controls, suggesting that multisensory integration and cross-modal binding may be weaker in some children with ASD. These results are discussed in the context of previous findings for multisensory integration in ASD and future directions for research. En ligne : http://dx.doi.org/10.1007/s10803-014-2179-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243

Keeping time in the brain: Autism spectrum disorder and audiovisual temporal processing / Ryan A. STEVENSON in Autism Research, 9-7 (July 2016)  

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