Brief Report: Developing Spatial Frequency Biases for Face Recognition in Autism and Williams Syndrome / Hayley C. LEONARD in Journal of Autism and Developmental Disorders, 41-7 (July 2011)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 41-7 (July 2011) . - p.968-973 Titre : Brief Report: Developing Spatial Frequency Biases for Face Recognition in Autism and Williams Syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Hayley C. LEONARD, Auteur ; Dagmara ANNAZ, Auteur ; Annette KARMILOFF-SMITH, Auteur ; Mark H. JOHNSON, Auteur Année de publication : 2011 Article en page(s) : p.968-973 Langues : Anglais (eng) Mots-clés : Face recognition  Spatial frequency  Development  Autism  Williams syndrome Index. décimale : PER Périodiques Résumé : The current study investigated whether contrasting face recognition abilities in autism and Williams syndrome could be explained by different spatial frequency biases over developmental time. Typically-developing children and groups with Williams syndrome and autism were asked to recognise faces in which low, middle and high spatial frequency bands were masked. All three groups demonstrated a gradual specialisation toward the mid-band. However, while the use of high spatial frequencies decreased in control and autism groups over development, the Williams syndrome group did not display a bias toward this band at any point. These data demonstrate that typical outcomes can be achieved through atypical developmental processes, and confirm the importance of cross-syndrome studies in the investigation of developmental disorders. En ligne : http://dx.doi.org/10.1007/s10803-010-1115-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=130 [article] Brief Report: Developing Spatial Frequency Biases for Face Recognition in Autism and Williams Syndrome [Texte imprimé et/ou numérique] / Hayley C. LEONARD, Auteur ; Dagmara ANNAZ, Auteur ; Annette KARMILOFF-SMITH, Auteur ; Mark H. JOHNSON, Auteur . - 2011 . - p.968-973. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 41-7 (July 2011) . - p.968-973 Mots-clés : Face recognition  Spatial frequency  Development  Autism  Williams syndrome Index. décimale : PER Périodiques Résumé : The current study investigated whether contrasting face recognition abilities in autism and Williams syndrome could be explained by different spatial frequency biases over developmental time. Typically-developing children and groups with Williams syndrome and autism were asked to recognise faces in which low, middle and high spatial frequency bands were masked. All three groups demonstrated a gradual specialisation toward the mid-band. However, while the use of high spatial frequencies decreased in control and autism groups over development, the Williams syndrome group did not display a bias toward this band at any point. These data demonstrate that typical outcomes can be achieved through atypical developmental processes, and confirm the importance of cross-syndrome studies in the investigation of developmental disorders. En ligne : http://dx.doi.org/10.1007/s10803-010-1115-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=130

Development of a Video-based Evaluation Tool in Rett Syndrome / Sue FYFE in Journal of Autism and Developmental Disorders, 37-9 (October 2007)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 37-9 (October 2007) . - p.1636-1646 Titre : Development of a Video-based Evaluation Tool in Rett Syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Sue FYFE, Auteur ; Michael E. MSALL, Auteur ; Hayley C. LEONARD, Auteur ; Jenny DOWNS, Auteur ; C. ELLAWAY, Auteur ; Walter E. KAUFMANN, Auteur ; C. PHILIPPE, Auteur ; C. L. LAURVICK, Auteur ; J. LISTER, Auteur ; B. BURFORD, Auteur ; O. MCILROY, Auteur ; Sheena REILLY, Auteur Année de publication : 2007 Article en page(s) : p.1636-1646 Langues : Anglais (eng) Mots-clés : Rett-syndrome Video-analysis Functional-ability Movement-disorder Behavioural-phenotype Participatory-research Index. décimale : PER Périodiques Résumé : This paper describes the development of a video-based evaluation tool for use in Rett syndrome (RTT). Components include a parent-report checklist, and video filming and coding protocols that contain items on eating, drinking, communication, hand function and movements, personal care and mobility. Ninety-seven of the 169 families who initially agreed to participate returned a videotape within 8 months of the first request. Subjects whose videos were returned had a similar age profile to those who did not provide a video but were more likely to have classical than atypical RTT. Evidence of the content and social validity and inter-rater reliability on 11 videos is provided. Video may provide detailed, objective assessment of function and behaviour in RTT. En ligne : http://dx.doi.org/10.1007/s10803-006-0293-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=174 [article] Development of a Video-based Evaluation Tool in Rett Syndrome [Texte imprimé et/ou numérique] / Sue FYFE, Auteur ; Michael E. MSALL, Auteur ; Hayley C. LEONARD, Auteur ; Jenny DOWNS, Auteur ; C. ELLAWAY, Auteur ; Walter E. KAUFMANN, Auteur ; C. PHILIPPE, Auteur ; C. L. LAURVICK, Auteur ; J. LISTER, Auteur ; B. BURFORD, Auteur ; O. MCILROY, Auteur ; Sheena REILLY, Auteur . - 2007 . - p.1636-1646. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 37-9 (October 2007) . - p.1636-1646 Mots-clés : Rett-syndrome Video-analysis Functional-ability Movement-disorder Behavioural-phenotype Participatory-research Index. décimale : PER Périodiques Résumé : This paper describes the development of a video-based evaluation tool for use in Rett syndrome (RTT). Components include a parent-report checklist, and video filming and coding protocols that contain items on eating, drinking, communication, hand function and movements, personal care and mobility. Ninety-seven of the 169 families who initially agreed to participate returned a videotape within 8 months of the first request. Subjects whose videos were returned had a similar age profile to those who did not provide a video but were more likely to have classical than atypical RTT. Evidence of the content and social validity and inter-rater reliability on 11 videos is provided. Video may provide detailed, objective assessment of function and behaviour in RTT. En ligne : http://dx.doi.org/10.1007/s10803-006-0293-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=174

Motor development in children at risk of autism: A follow-up study of infant siblings / Hayley C. LEONARD in Autism, 18-3 (April 2014)  

Public ISBD [article]  inAutism > 18-3 (April 2014) . - p.281-291 Titre : Motor development in children at risk of autism: A follow-up study of infant siblings Type de document : Texte imprimé et/ou numérique Auteurs : Hayley C. LEONARD, Auteur ; Rachael BEDFORD, Auteur ; Tony CHARMAN, Auteur ; Mayada ELSABBAGH, Auteur ; Mark H. JOHNSON, Auteur ; Elisabeth L. HILL, Auteur ; THE BASIS TEAM, Auteur Article en page(s) : p.281-291 Langues : Anglais (eng) Mots-clés : autism spectrum disorder  broader autism phenotype  face processing  infant siblings  motor development Index. décimale : PER Périodiques Résumé : Recently, evidence of poor or atypical motor skills in autism spectrum disorder has led some to argue that motor impairment is a core feature of the condition. The current study uses a longitudinal prospective design to assess the development of motor skills of 20 children at increased risk of developing autism spectrum disorder, who were recruited and tested at 9 and 40 months of age, on the basis of having an older sibling diagnosed with the condition. All children completed a range of motor, face processing, IQ and diagnostic assessments at a follow-up visit (aged 5–7 years), providing a detailed profile of development in this group from a number of standardised, parental report and experimental measures. A higher proportion of children than expected demonstrated motor difficulties at the follow-up visit and those highlighted by parental report as having poor motor skills as infants and toddlers were also more likely to have lower face processing scores and elevated autism-related social symptoms at 5–7 years, despite having similar IQ levels. These data lend support to the argument that early motor difficulties may be a risk factor for later motor impairment as well as differences in social communication and cognition, traits that are related to autism spectrum disorder. En ligne : http://dx.doi.org/10.1177/1362361312470037 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229 [article] Motor development in children at risk of autism: A follow-up study of infant siblings [Texte imprimé et/ou numérique] / Hayley C. LEONARD, Auteur ; Rachael BEDFORD, Auteur ; Tony CHARMAN, Auteur ; Mayada ELSABBAGH, Auteur ; Mark H. JOHNSON, Auteur ; Elisabeth L. HILL, Auteur ; THE BASIS TEAM, Auteur . - p.281-291. Langues : Anglais (eng) in Autism > 18-3 (April 2014) . - p.281-291 Mots-clés : autism spectrum disorder  broader autism phenotype  face processing  infant siblings  motor development Index. décimale : PER Périodiques Résumé : Recently, evidence of poor or atypical motor skills in autism spectrum disorder has led some to argue that motor impairment is a core feature of the condition. The current study uses a longitudinal prospective design to assess the development of motor skills of 20 children at increased risk of developing autism spectrum disorder, who were recruited and tested at 9 and 40 months of age, on the basis of having an older sibling diagnosed with the condition. All children completed a range of motor, face processing, IQ and diagnostic assessments at a follow-up visit (aged 5–7 years), providing a detailed profile of development in this group from a number of standardised, parental report and experimental measures. A higher proportion of children than expected demonstrated motor difficulties at the follow-up visit and those highlighted by parental report as having poor motor skills as infants and toddlers were also more likely to have lower face processing scores and elevated autism-related social symptoms at 5–7 years, despite having similar IQ levels. These data lend support to the argument that early motor difficulties may be a risk factor for later motor impairment as well as differences in social communication and cognition, traits that are related to autism spectrum disorder. En ligne : http://dx.doi.org/10.1177/1362361312470037 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229

Overlapping Phenotypes in Autism Spectrum Disorder and Developmental Coordination Disorder: A Cross-Syndrome Comparison of Motor and Social Skills / Emma SUMNER in Journal of Autism and Developmental Disorders, 46-8 (August 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-8 (August 2016) . - p.2609-2620 Titre : Overlapping Phenotypes in Autism Spectrum Disorder and Developmental Coordination Disorder: A Cross-Syndrome Comparison of Motor and Social Skills Type de document : Texte imprimé et/ou numérique Auteurs : Emma SUMNER, Auteur ; Hayley C. LEONARD, Auteur ; Elisabeth L. HILL, Auteur Article en page(s) : p.2609-2620 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Developmental coordination disorder  Face processing  Motor ability  Social behaviour Index. décimale : PER Périodiques Résumé : Motor and social difficulties are often found in children with an autism spectrum disorder (ASD) and with developmental coordination disorder (DCD), to varying degrees. This study investigated the extent of overlap of these problems in children aged 7–10 years who had a diagnosis of either ASD or DCD, compared to typically-developing controls. Children completed motor and face processing assessments. Parents completed questionnaires concerning their child’s early motor and current motor and social skills. There was considerable overlap between the ASD and DCD groups on the motor and social assessments, with both groups more impaired than controls. Furthermore, motor skill predicted social functioning for both groups. Future research should consider the relationships between core symptoms and their consequences in other domains. En ligne : http://dx.doi.org/10.1007/s10803-016-2794-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=290 [article] Overlapping Phenotypes in Autism Spectrum Disorder and Developmental Coordination Disorder: A Cross-Syndrome Comparison of Motor and Social Skills [Texte imprimé et/ou numérique] / Emma SUMNER, Auteur ; Hayley C. LEONARD, Auteur ; Elisabeth L. HILL, Auteur . - p.2609-2620. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-8 (August 2016) . - p.2609-2620 Mots-clés : Autism spectrum disorders  Developmental coordination disorder  Face processing  Motor ability  Social behaviour Index. décimale : PER Périodiques Résumé : Motor and social difficulties are often found in children with an autism spectrum disorder (ASD) and with developmental coordination disorder (DCD), to varying degrees. This study investigated the extent of overlap of these problems in children aged 7–10 years who had a diagnosis of either ASD or DCD, compared to typically-developing controls. Children completed motor and face processing assessments. Parents completed questionnaires concerning their child’s early motor and current motor and social skills. There was considerable overlap between the ASD and DCD groups on the motor and social assessments, with both groups more impaired than controls. Furthermore, motor skill predicted social functioning for both groups. Future research should consider the relationships between core symptoms and their consequences in other domains. En ligne : http://dx.doi.org/10.1007/s10803-016-2794-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=290

Predicting the rate of language development from early motor skills in at-risk infants who develop autism spectrum disorder / Hayley C. LEONARD in Research in Autism Spectrum Disorders, 13-14 (May 2015)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 13-14 (May 2015) . - p.15-24 Titre : Predicting the rate of language development from early motor skills in at-risk infants who develop autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Hayley C. LEONARD, Auteur ; Rachael BEDFORD, Auteur ; Andrew PICKLES, Auteur ; Elisabeth L. HILL, Auteur Article en page(s) : p.15-24 Langues : Anglais (eng) Mots-clés : Motor development  Autism spectrum disorder  Infancy  Language development  Prospective Index. décimale : PER Périodiques Résumé : Abstract The aim of the current paper was to use data from a prospective study to assess the impact of early motor skills on the rate of language development in infants with an older sibling with autism spectrum disorder (ASD), who are at increased risk of developing ASD themselves. Infants were tested prospectively at four points (7, 14, 24 and 36 months), and were assessed for ASD at the last visit. Latent growth curve analysis was used to model rate of language development using the Vineland Adaptive Behavior Scales between 7–36 months in infants at high and low familial risk for ASD. Motor scores from the Mullen Scales of Early Learning at 7 months were used as predictors of language growth. Gross Motor scores predicted the subsequent rate of expressive, but not receptive, language development in at-risk siblings who were later diagnosed with ASD. Although the pattern was similar for fine motor skills, the relationship did not reach significance. It seems that early motor delay impacts the rate of development of expressive language, and this may be of particular importance to infants at increased risk of developing ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.12.012 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260 [article] Predicting the rate of language development from early motor skills in at-risk infants who develop autism spectrum disorder [Texte imprimé et/ou numérique] / Hayley C. LEONARD, Auteur ; Rachael BEDFORD, Auteur ; Andrew PICKLES, Auteur ; Elisabeth L. HILL, Auteur . - p.15-24. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 13-14 (May 2015) . - p.15-24 Mots-clés : Motor development  Autism spectrum disorder  Infancy  Language development  Prospective Index. décimale : PER Périodiques Résumé : Abstract The aim of the current paper was to use data from a prospective study to assess the impact of early motor skills on the rate of language development in infants with an older sibling with autism spectrum disorder (ASD), who are at increased risk of developing ASD themselves. Infants were tested prospectively at four points (7, 14, 24 and 36 months), and were assessed for ASD at the last visit. Latent growth curve analysis was used to model rate of language development using the Vineland Adaptive Behavior Scales between 7–36 months in infants at high and low familial risk for ASD. Motor scores from the Mullen Scales of Early Learning at 7 months were used as predictors of language growth. Gross Motor scores predicted the subsequent rate of expressive, but not receptive, language development in at-risk siblings who were later diagnosed with ASD. Although the pattern was similar for fine motor skills, the relationship did not reach significance. It seems that early motor delay impacts the rate of development of expressive language, and this may be of particular importance to infants at increased risk of developing ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.12.012 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260

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