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Détail de l'auteur
Auteur John L. BRADSHAW |
Documents disponibles écrits par cet auteur (9)



An investigation of upper limb motor function in high functioning autism and Asperger's disorder using a repetitive Fitts’ aiming task / Nicole PAPADOPOULOS in Research in Autism Spectrum Disorders, 6-1 (January-March 2012)
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Titre : An investigation of upper limb motor function in high functioning autism and Asperger's disorder using a repetitive Fitts’ aiming task Type de document : Texte imprimé et/ou numérique Auteurs : Nicole PAPADOPOULOS, Auteur ; Jennifer L. MCGINLEY, Auteur ; Bruce J. TONGE, Auteur ; John L. BRADSHAW, Auteur ; Kerryn SAUNDERS, Auteur ; Nicole J. RINEHART, Auteur Année de publication : 2012 Article en page(s) : p.286-292 Langues : Anglais (eng) Mots-clés : Motor performance Autism Asperger's disorder Cerebellum Movement control Fitts’ task Index. décimale : PER Périodiques Résumé : There is now a growing body of research examining movement difficulties in children diagnosed with high functioning autism (HFA) and Asperger's disorder (AD). Despite this, few studies have investigated the kinematic components of movement that may be disrupted in children diagnosed with these disorders. The current study investigated rapid aiming movements in 19 individuals diagnosed with HFA, 20 individuals diagnosed with AD and 18 typically developing (TD) controls. A novel touchscreen version of a Fitts’ aiming task was administered that required participants to make 10 reciprocal aiming movements between targets. Task difficulty was manipulated by varying the size and distance between targets. Movement time in the HFA and AD groups was comparable to TD controls. Children with HFA displayed more constant and variable error across repeated aiming attempts compared to the TD group that may be attributed to deficits in feedforward online refinement of movement. These findings are in accordance with previous gait, ocular motor, upper limb and neuroimaging studies that suggest that the cerebellum may underlie movement disturbance in individuals diagnosed with HFA. Additionally, differences in the nature of upper limb motor disturbance in HFA may serve as a useful future adjunct to clinical measures. En ligne : http://dx.doi.org/10.1016/j.rasd.2011.05.010 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=146
in Research in Autism Spectrum Disorders > 6-1 (January-March 2012) . - p.286-292[article] An investigation of upper limb motor function in high functioning autism and Asperger's disorder using a repetitive Fitts’ aiming task [Texte imprimé et/ou numérique] / Nicole PAPADOPOULOS, Auteur ; Jennifer L. MCGINLEY, Auteur ; Bruce J. TONGE, Auteur ; John L. BRADSHAW, Auteur ; Kerryn SAUNDERS, Auteur ; Nicole J. RINEHART, Auteur . - 2012 . - p.286-292.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 6-1 (January-March 2012) . - p.286-292
Mots-clés : Motor performance Autism Asperger's disorder Cerebellum Movement control Fitts’ task Index. décimale : PER Périodiques Résumé : There is now a growing body of research examining movement difficulties in children diagnosed with high functioning autism (HFA) and Asperger's disorder (AD). Despite this, few studies have investigated the kinematic components of movement that may be disrupted in children diagnosed with these disorders. The current study investigated rapid aiming movements in 19 individuals diagnosed with HFA, 20 individuals diagnosed with AD and 18 typically developing (TD) controls. A novel touchscreen version of a Fitts’ aiming task was administered that required participants to make 10 reciprocal aiming movements between targets. Task difficulty was manipulated by varying the size and distance between targets. Movement time in the HFA and AD groups was comparable to TD controls. Children with HFA displayed more constant and variable error across repeated aiming attempts compared to the TD group that may be attributed to deficits in feedforward online refinement of movement. These findings are in accordance with previous gait, ocular motor, upper limb and neuroimaging studies that suggest that the cerebellum may underlie movement disturbance in individuals diagnosed with HFA. Additionally, differences in the nature of upper limb motor disturbance in HFA may serve as a useful future adjunct to clinical measures. En ligne : http://dx.doi.org/10.1016/j.rasd.2011.05.010 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=146 Attentional blink in young people with high-functioning autism and Asperger’s disorder / Nicole J. RINEHART in Autism, 14-1 (January 2010)
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Titre : Attentional blink in young people with high-functioning autism and Asperger’s disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicole J. RINEHART, Auteur ; Bruce J. TONGE, Auteur ; John L. BRADSHAW, Auteur ; Avril V. BRERETON, Auteur Année de publication : 2010 Article en page(s) : p.47-66 Langues : Anglais (eng) Mots-clés : Asperger’s-disorder attentional-blink autism visual-search Index. décimale : PER Périodiques Résumé : The aim of the study was to examine the temporal characteristics of information processing in individuals with high-functioning autism and Asperger’s disorder using a rapid serial visual presentation paradigm. The results clearly showed that such people demonstrate an attentional blink of similar magnitude to comparison groups. This supports the proposition that the social processing difficulties experienced by these individuals are not underpinned by a basic temporal-cognitive processing deficit, which is consistent with Minshew’s complex information processing theory. This is the second study to show that automatic inhibitory processes are intact in both autism and Asperger’s disorder, which appears to distinguish these disorders from some other frontostriatal disorders. The finding that individuals with autism were generally poorer than the comparison group at detecting black Xs, while being as good in responding to white letters, was accounted for in the context of a potential dual-task processing difficulty or visual search superiority. En ligne : http://dx.doi.org/10.1177/1362361309335718 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=968
in Autism > 14-1 (January 2010) . - p.47-66[article] Attentional blink in young people with high-functioning autism and Asperger’s disorder [Texte imprimé et/ou numérique] / Nicole J. RINEHART, Auteur ; Bruce J. TONGE, Auteur ; John L. BRADSHAW, Auteur ; Avril V. BRERETON, Auteur . - 2010 . - p.47-66.
Langues : Anglais (eng)
in Autism > 14-1 (January 2010) . - p.47-66
Mots-clés : Asperger’s-disorder attentional-blink autism visual-search Index. décimale : PER Périodiques Résumé : The aim of the study was to examine the temporal characteristics of information processing in individuals with high-functioning autism and Asperger’s disorder using a rapid serial visual presentation paradigm. The results clearly showed that such people demonstrate an attentional blink of similar magnitude to comparison groups. This supports the proposition that the social processing difficulties experienced by these individuals are not underpinned by a basic temporal-cognitive processing deficit, which is consistent with Minshew’s complex information processing theory. This is the second study to show that automatic inhibitory processes are intact in both autism and Asperger’s disorder, which appears to distinguish these disorders from some other frontostriatal disorders. The finding that individuals with autism were generally poorer than the comparison group at detecting black Xs, while being as good in responding to white letters, was accounted for in the context of a potential dual-task processing difficulty or visual search superiority. En ligne : http://dx.doi.org/10.1177/1362361309335718 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=968 Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder / Nicole J. RINEHART in Journal of Child Psychology and Psychiatry, 41-6 (September 2000)
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Titre : Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur Année de publication : 2000 Article en page(s) : p.769-778 Langues : Anglais (eng) Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778[article] Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder [Texte imprimé et/ou numérique] / Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur . - 2000 . - p.769-778.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778
Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125 Brief Report: Children with ADHD Without Co-morbid Autism do not have Impaired Motor Proficiency on the Movement Assessment Battery for Children / Nicole PAPADOPOULOS in Journal of Autism and Developmental Disorders, 43-6 (June 2013)
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Titre : Brief Report: Children with ADHD Without Co-morbid Autism do not have Impaired Motor Proficiency on the Movement Assessment Battery for Children Type de document : Texte imprimé et/ou numérique Auteurs : Nicole PAPADOPOULOS, Auteur ; Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Jennifer L. MCGINLEY, Auteur Article en page(s) : p.1477-1482 Langues : Anglais (eng) Mots-clés : Autism ADHD Co-morbidity Motor performance Index. décimale : PER Périodiques Résumé : Motor proficiency was investigated in a sample of children with Attention Deficit Hyperactivity Disorder-Combined type (ADHD-CT) without autism. Accounting for the influence of co-morbid autistic symptoms in ADHD motor studies is vital given that motor impairment has been linked to social–communication symptoms in children who have co-morbid ADHD and autistic-like symptoms. Two groups of children aged between 7–14 years were recruited; children with ADHD-CT (n = 16; mean age 10 years, 7 months [SD = 1 year, 10 months]) and a typically developing (n = 16; mean age 10 years, 6 months [SD = 2 years, 6 months]) group. Motor proficiency was measured using the Movement Assessment Battery for Children-2nd Edition, ADHD symptoms were measured using the Conner’s Parent Rating Scale. Children with ADHD-CT who had been screened for co-morbid autism did not display motor difficulties on the MABC-2. Higher levels of inattention, but not hyperactivity or impulsivity were associated with poorer motor performance. These findings provide indirect evidence that the motor problems that children with ADHD experience may be related to co-occurring social responsiveness impairments. En ligne : http://dx.doi.org/10.1007/s10803-012-1687-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=201
in Journal of Autism and Developmental Disorders > 43-6 (June 2013) . - p.1477-1482[article] Brief Report: Children with ADHD Without Co-morbid Autism do not have Impaired Motor Proficiency on the Movement Assessment Battery for Children [Texte imprimé et/ou numérique] / Nicole PAPADOPOULOS, Auteur ; Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Jennifer L. MCGINLEY, Auteur . - p.1477-1482.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 43-6 (June 2013) . - p.1477-1482
Mots-clés : Autism ADHD Co-morbidity Motor performance Index. décimale : PER Périodiques Résumé : Motor proficiency was investigated in a sample of children with Attention Deficit Hyperactivity Disorder-Combined type (ADHD-CT) without autism. Accounting for the influence of co-morbid autistic symptoms in ADHD motor studies is vital given that motor impairment has been linked to social–communication symptoms in children who have co-morbid ADHD and autistic-like symptoms. Two groups of children aged between 7–14 years were recruited; children with ADHD-CT (n = 16; mean age 10 years, 7 months [SD = 1 year, 10 months]) and a typically developing (n = 16; mean age 10 years, 6 months [SD = 2 years, 6 months]) group. Motor proficiency was measured using the Movement Assessment Battery for Children-2nd Edition, ADHD symptoms were measured using the Conner’s Parent Rating Scale. Children with ADHD-CT who had been screened for co-morbid autism did not display motor difficulties on the MABC-2. Higher levels of inattention, but not hyperactivity or impulsivity were associated with poorer motor performance. These findings provide indirect evidence that the motor problems that children with ADHD experience may be related to co-occurring social responsiveness impairments. En ligne : http://dx.doi.org/10.1007/s10803-012-1687-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=201 Brief report: Inhibition of return in young people with autism and Asperger's disorder / Nicole J. RINEHART in Autism, 12-3 (May 2008)
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Titre : Brief report: Inhibition of return in young people with autism and Asperger's disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur Année de publication : 2008 Article en page(s) : p.249-260 Langues : Anglais (eng) Mots-clés : Asperger's-disorder autism inhibition-of-return visual-search Index. décimale : PER Périodiques Résumé : The aim of this study was to investigate whether the superior search abilities observed in autism/Asperger's disorder may in part be a consequence of a more pronounced inhibition of return (IOR). Contrary to our prediction, IOR in individuals with autism was comparable to the matched comparison group. However, the autism group committed more false alarm responses than the matched comparison group; this may reflect a possible inhibitory deficit, or suggest that individuals with autism rely more on probabilities to determine their behavioural responses. There was a borderline-significant trend (p = 0.052) to indicate that IOR may be more pronounced in individuals with Asperger's disorder. In contrast to the autism group, the Asperger's disorder group had a pattern of false alarm responses similar to that of the comparison group. The findings further inform Minshew's complex information processing theory which seeks to establish which areas of neuropsychological functioning are preserved and deficit in autism. En ligne : http://dx.doi.org/10.1177/1362361307088754 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=423
in Autism > 12-3 (May 2008) . - p.249-260[article] Brief report: Inhibition of return in young people with autism and Asperger's disorder [Texte imprimé et/ou numérique] / Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur . - 2008 . - p.249-260.
Langues : Anglais (eng)
in Autism > 12-3 (May 2008) . - p.249-260
Mots-clés : Asperger's-disorder autism inhibition-of-return visual-search Index. décimale : PER Périodiques Résumé : The aim of this study was to investigate whether the superior search abilities observed in autism/Asperger's disorder may in part be a consequence of a more pronounced inhibition of return (IOR). Contrary to our prediction, IOR in individuals with autism was comparable to the matched comparison group. However, the autism group committed more false alarm responses than the matched comparison group; this may reflect a possible inhibitory deficit, or suggest that individuals with autism rely more on probabilities to determine their behavioural responses. There was a borderline-significant trend (p = 0.052) to indicate that IOR may be more pronounced in individuals with Asperger's disorder. In contrast to the autism group, the Asperger's disorder group had a pattern of false alarm responses similar to that of the comparison group. The findings further inform Minshew's complex information processing theory which seeks to establish which areas of neuropsychological functioning are preserved and deficit in autism. En ligne : http://dx.doi.org/10.1177/1362361307088754 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=423 A Deficit in Shifting Attention Present in High-Functioning Autism but not Asperger’s Disorder / Nicole J. RINEHART in Autism, 5-1 (March 2001)
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PermalinkDifferentiation of High-Functioning Autism and Asperger’s Disorder Based on Neuromotor Behaviour / Ashwini NAYATE in Journal of Autism and Developmental Disorders, 42-5 (May 2012)
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PermalinkMotor proficiency and emotional/behavioural disturbance in autism and Asperger’s disorder: another piece of the neurological puzzle? / Nicole PAPADOPOULOS in Autism, 16-6 (November 2012)
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