Comparing Motor Skills in Autism Spectrum Individuals With and Without Speech Delay (original) (raw)
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Autism Spectrum Disorder (ASD) is a developmental disorder characterized by difficulty in communication, which includes a high incidence of speech production errors. We hypothesize that these errors are partly due to underlying deficits in motor coordination and control, which are also manifested in degraded fine motor control of facial expressions and purposeful hand movements. In this pilot study, we computed correlations of acoustic, video, and handwriting time-series derived from five children with ASD and five children with neurotypical development during speech and handwriting tasks. These correlations and eigenvalues derived from the correlations act as a proxy for motor coordination across articulatory, laryngeal, and respiratory speech production systems and for fine motor skills. We utilized features derived from these correlations to discriminate between children with and without ASD. Eigenvalues derived from these correlations highlighted differences in complexity of coo...
Journal of Autism and Developmental Disorders, 2006
This paper examines upper-body movement kinematics in individuals with high-functioning autism (HFA) and Asperger's disorder (AD). In general, the results indicate that HFA is more consistently associated with impaired motoric preparation/initiation than AD. The data further suggest that this quantitative difference in motor impairment is not necessarily underpinned by greater executive dysfunction vulnerability in autism relative to AD. Quantitative motoric dissociation between autism and AD may have down-stream effects on later stages of movement resulting in qualitative differences between these disorder groups, e.g. ''motor clumsiness'' in AD versus ''abnormal posturing'' in autism. It will be important for future research to map the developmental trajectory of motor abnormalities in these disorder groups.
Research in Developmental Disabilities, 2018
Children with Autism Spectrum Disorder (ASD) have basic motor impairments in balance, gait, and coordination as well as autism-specific impairments in praxis/motor planning and interpersonal synchrony. Majority of the current literature focuses on specific motor behaviors or domains. Additionally, the relationship between cognition, ASD severity, and motor performance in ASD is unclear. We used a comprehensive set of measures to compare gross and fine motor, praxis/imitation, motor coordination, and interpersonal synchrony skills across three groups of children between 5 and 12 years of age: children with ASD with high IQ (HASD), children with ASD with low IQ (LASD), and typically developing (TD) children. We used the Bruininks-Oseretsky Test of Motor Proficiency and the Bilateral Motor Coordination subtest of the Sensory Integration and Praxis Tests to assess motor performance and praxis skills respectively. Children were also examined while performing simple and complex rhythmic upper and lower limb actions on their own (solo context) and with a social partner (social context). Both ASD groups had lower gross and fine motor scores, greater praxis errors in total and within various error types, lower movement rates, greater movement variability, and weaker interpersonal synchrony compared to the TD group. In addition, the LASD group had lower gross motor scores and greater mirroring errors compared to the HASD group. Overall, a variety of motor impairments are present across the entire spectrum of children with ASD, regardless of their IQ scores. Both, fine and gross motor performance significantly correlated with IQ but not with autism severity; however, praxis errors (mainly, total, overflow, and rhythmicity) strongly correlated with autism severity and not IQ. Our study findings highlight the need for clinicians and therapists to include motor evaluations and *
Motor deficits in children with autism spectrum disorder: a cross-syndrome study
Autism research : official journal of the International Society for Autism Research, 2014
Recent research suggests that children with autism spectrum disorder (ASD) experience some level of motor difficulty, and that this may be associated with social communication skills. However, other studies show that children with language impairments, but without the social communication problems, are at risk of motor difficulties as well. The aim of the present study was to determine if children with ASD have syndrome-specific motor deficits in comparison to children with specific language impairment (SLI). We used an independent groups design with three groups of children (8-10 years old) matched on age and nonverbal IQ: an ASD group, an SLI group, and a typically developing (TD) group. All of the children completed an individually administered, standardized motor assessment battery. We found that the TD group demonstrated significantly better motor skills than either the ASD or SLI groups. Detailed analyses of the motor subtests revealed that the ASD and SLI groups had very simi...
Journal of Autism and Developmental Disorders, 2007
This study assessed motor delay in young children 21–41 months of age with autism spectrum disorder (ASD), and compared motor scores in children with ASD to those of children without ASD. Fifty-six children (42 boys, 14 girls) were in three groups: children with ASD, children with developmental delay (DD), and children with developmental concerns without motor delay. Descriptive analysis showed all children with ASD had delays in gross motor skills, fine motor skills, or both. Children with ASD and children with DD showed significant impairments in motor development compared to children who had developmental concerns without motor delay. Motor scores of young children with ASD did not differ significantly on motor skill measures when compared to young children with DD.
Motor Abilities in Autism: A Review Using a
Altered motor behaviour is commonly reported in Autism Spectrum Disorder, but the aetiology remains unclear. Here, we have taken a computational approach in order to break down motor control into different components and review the functioning of each process. Our findings suggest abnormalities in two areas-poor integration of information for efficient motor planning, and increased variability in basic sensory inputs and motor outputs. In contrast, motor learning processes are relatively intact and there is inconsistent evidence for deficits in predictive control. We suggest future work on motor abilities in autism should focus on sensorimotor noise and on higher level motor planning, as these seem to have a significant role in causing motor difficulties for autistic individuals. Denckla 1985) 4 and retrospective and neurological examination 5 J Autism Dev Disord
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Kinematic recordings in a reach and drop task were compared between 12 preschool children with autism without mental retardation and 12 gender and age-matched normally developing children. Our aim was to investigate whether motor anomalies in autism may depend more on a planning ability dysfunction or on a motor control deficit. Planning and control processes were separately investigated by examining kinematic recordings divided into primary movement-(planning-based) and corrective submovement-(control-based) phases.
Motor Impairments in Autism Spectrum Disorder: Implications for Intervention and Research
North American Academic Research, 2024
Motor impairments, such as unusual posture, are a critical aspect of autism spectrum disorder (ASD) that affects individuals of all ages and influences how the disorder manifests. This review examines the prevalence and consequences of motor impairments in ASD, exploring their relationship with key characteristics, potential neurobiological factors, and implications for intervention and future research. By reviewing recent studies, literature reviews, and theoretical perspectives, this review reveals the complex interplay between motor abilities, sensory processing, social cognition, and overall development in individuals with ASD. The findings show that motor impairments are not just co-occurring features but are integral to the condition, affecting the severity of social communication difficulties, restricted and repetitive behaviors, and adaptive functioning. This review highlights the need for a shift in ASD research and intervention, moving away from isolated approaches and embracing a more comprehensive perspective that considers the significant impact of motor impairments on individuals with ASD.
Motor Coordination in Autism Spectrum Disorders: A Synthesis and Meta-Analysis
Journal of Autism and Developmental Disorders, 2010
Are motor coordination deficits an underlying cardinal feature of Autism Spectrum Disorders (ASD)? Database searches identified 83 ASD studies focused on motor coordination, arm movements, gait, or postural stability deficits. Data extraction involved between-group comparisons for ASD and typically developing controls (N = 51). Rigorous meta-analysis techniques including random effects models, forest and funnel plots, I 2 , publication bias, fail-safe analysis, and moderator variable analyses determined a significant standardized mean difference effect equal to 1.20 (SE = 0.144; p \ 0.0001; Z = 10.49). This large effect indicated substantial motor coordination deficits in the ASD groups across a wide range of behaviors. The current overall findings portray motor coordination deficits as pervasive across diagnoses, thus, a cardinal feature of ASD.
Research in Autism Spectrum Disorders, 2020
Background: Objective evaluation is important to achieve an effective intervention. However, there are limited assessment tools to easily apply to autism spectrum disorder (ASD) individuals with various severities in the clinical setting. This study aimed to characterize the timing control ability of ASD individuals and clarify the relationship between timing control ability and ASD severity level in order to establish an assessment tool for ASD function. Method: We developed a simple touchscreen-based task for evaluate motor timing control ability and used two types of sensorimotor timing controls (i.e., simple timing and delayed timing tasks) in ASD (n = 77) and typically developing (TD) individuals (n = 87). Results: Each participant with ASD completed the simple timing task. Regarding the delayed timing task, two participants in the ASD group were excluded as they faced difficulties when conducting the task according to the instruction. Accuracy of motor-timing control was significantly lower in participants with ASD than in those with TD for each timing task. The mean timing error in the adaptive timing control were correlated with clinically evaluated ASD severity and participant age in the ASD group. Furthermore, receiver operating characteristic curve analysis indicated that altered motor timing control is useful for distinguishing individuals with and without ASD (area under the curve = .845). Conclusions: We showed that our assessment tool accurately assessed timing control ability of individuals with ASD, regardless of the varying ranges of symptomatic severities, and served as a useful tool for capturing the overall severity of such a heterogeneous disorder, which may lead to more effective therapies for ASD.