scholarly journals Intraverbal Behavior and Verbal Conditional Discriminations in Typically Developing Children and Children With Autism

2011 ◽  
Vol 27 (1) ◽  
pp. 23-44 ◽  
Author(s):  
Mark L. Sundberg ◽  
Cindy A. Sundberg
Keyword(s):  
Children With Autism ◽  
Typically Developing ◽  
Conditional Discriminations ◽  
Typically Developing Children ◽  
Intraverbal Behavior

scholarly journals Identifying the signature of prospective motor control in children with autism

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrea Cavallo ◽  
Luca Romeo ◽  
Caterina Ansuini ◽  
Francesca Battaglia ◽  
Lino Nobili ◽  
...  
Keyword(s):  
Motor Control ◽  
Hand Movement ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Typically Developing ◽  
Movement Kinematics ◽  
Typically Developing Children ◽  
Phenotypic Marker ◽  
Quantitative Evidence ◽  
Movement Data

AbstractFailure to develop prospective motor control has been proposed to be a core phenotypic marker of autism spectrum disorders (ASD). However, whether genuine differences in prospective motor control permit discriminating between ASD and non-ASD profiles over and above individual differences in motor output remains unclear. Here, we combined high precision measures of hand movement kinematics and rigorous machine learning analyses to determine the true power of prospective movement data to differentiate children with autism and typically developing children. Our results show that while movement is unique to each individual, variations in the kinematic patterning of sequential grasping movements genuinely differentiate children with autism from typically developing children. These findings provide quantitative evidence for a prospective motor control impairment in autism and indicate the potential to draw inferences about autism on the basis of movement kinematics.

scholarly journals A Comparison of Experiential Grammar in Narrative Discourse Between Typically Developing Children and Children with Autism

MANUSYA ◽  
2014 ◽  
Vol 17 (1) ◽  
pp. 1-21
Author(s):  
Jeamjai Jeeraumporn ◽  
Pattama Patpong
Keyword(s):  
Children With Autism ◽  
Narrative Discourse ◽  
Lower Percentage ◽  
Typically Developing ◽  
Typically Developing Children ◽  
Serial Verb Constructions ◽  
Experiential Mode ◽  
Nominal Groups ◽  
Serial Verb ◽  
Verbal Processes

The objective of this study was to compare experiential grammar in the narrative discourse of thirty typically developing Thai children and thirty Thai children with autism in elementary grades 1 to 3. Data was compiled by asking subjects to tell a narrative discourse from a wordless storybook "A Boy, a Dog, and a Frog” (Mayer 1967). Data was analyzed based on the Systemic Functional Linguistics approach and focused on experiential mode of meaning concerned with the system of Transitivity. The results revealed that children with autism used fewer clause complexes and clause simplexes than typically developing children. For the system of Transitivity, it was found that children with autism used less modified nominal groups as the Participant especially in grade 2 and 3 and they used a smaller number and less variety of process types; used a lower percentage of mental, behavioral and verbal processes; and used a lower percentage of serial verb constructions. Children with autism, especially those in grades 2 and 3, used a smaller variety of circumstance types; and used a lower percentage of clauses with complex circumstances.

scholarly journals Recognition of Emotion from Facial Expressions with Direct or Averted Eye Gaze and Varying Expression Intensities in Children with Autism Disorder and Typically Developing Children

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Dina Tell ◽  
Denise Davidson ◽  
Linda A. Camras
Keyword(s):  
Emotion Recognition ◽  
Facial Expressions ◽  
Eye Gaze ◽  
Children With Autism ◽  
Gaze Direction ◽  
Emotional Expressions ◽  
Typically Developing ◽  
Typically Developing Children ◽  
Expression Intensity ◽  
Autism Disorder

Eye gaze direction and expression intensity effects on emotion recognition in children with autism disorder and typically developing children were investigated. Children with autism disorder and typically developing children identified happy and angry expressions equally well. Children with autism disorder, however, were less accurate in identifying fear expressions across intensities and eye gaze directions. Children with autism disorder rated expressions with direct eyes, and 50% expressions, as more intense than typically developing children. A trend was also found for sad expressions, as children with autism disorder were less accurate in recognizing sadness at 100% intensity with direct eyes than typically developing children. Although the present research showed that children with autism disorder are sensitive to eye gaze direction, impairments in the recognition of fear, and possibly sadness, exist. Furthermore, children with autism disorder and typically developing children perceive the intensity of emotional expressions differently.

scholarly journals Altered Metabolism of Mothers of Young Children with Autism Spectrum Disorder: A Case Control Study

2020 ◽  
Author(s):  
Kathryn Hollowood-Jones ◽  
James B. Adams ◽  
Devon M. Coleman ◽  
Sivapriya Ramamoorthy ◽  
Stephan Melnyk ◽  
...  
Keyword(s):  
Young Children ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Typically Developing ◽  
Typically Developing Children ◽  
Conjugated Molecules ◽  
Metabolic Analysis ◽  
Transsulfuration Pathway ◽  
Young Children With Autism ◽  
One Carbon Metabolism

Abstract Background: Previous research studies have demonstrated abnormalities in the metabolism of mothers of young children with autism.Method: Metabolic analysis was performed on blood samples from 30 mothers of young children with Autism Spectrum Disorder (ASD-M) and from 29 mothers of young typically-developing children (TD-M). Targeted metabolic analysis focusing on the folate one-carbon metabolism (FOCM) and the transsulfuration pathway (TS) as well as broad metabolic analysis were performed. Statistical analysis of the data involved both univariate and multivariate statistical methods.Results: Univariate analysis revealed significant differences in 5 metabolites from the folate one-carbon metabolism and the transsulfuration pathway and differences in an additional 48 metabolites identified by broad metabolic analysis, including lower levels of many carnitine-conjugated molecules. Multivariate analysis with leave-one-out cross-validation allowed classification of samples as belonging to one of the two groups of mothers with 93% sensitivity and 97% specificity with five metabolites. Furthermore, each of these five metabolites correlated with 8-15 other metabolites indicating that there are five clusters of correlated metabolites. In fact, all but 5 of the 50 metabolites with the highest area under the receiver operating characteristic curve were associated with the five identified groups. Many of the abnormalities appear linked to low levels of folate, vitamin B12, and carnitine-conjugated molecules.Conclusions: Mothers of children with ASD have many significantly different metabolite levels compared to mothers of typically developing children at 2-5 years after birth.

Functional changes during visuo-spatial working memory in autism spectrum disorder: 2-year longitudinal functional magnetic resonance imaging study

Autism ◽  
2018 ◽  
Vol 23 (3) ◽  
pp. 639-652 ◽  
Author(s):  
Vanessa M Vogan ◽  
Benjamin R Morgan ◽  
Mary Lou Smith ◽  
Margot J Taylor
Keyword(s):  
Autism Spectrum Disorder ◽  
Neural Activity ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Typically Developing Children ◽  
Functional Changes

This study examined functional changes longitudinally over 2 years in neural correlates associated with working memory in youth with and without autism spectrum disorder, and the impact of increasing cognitive load. We used functional magnetic resonance imaging and a visuo-spatial 1-back task with four levels of difficulty. A total of 14 children with autism spectrum disorder and 15 typically developing children (ages 7–13) were included at baseline and followed up approximately 2 years later. Despite similar task performance between groups, differences were evident in the developmental trajectories of neural responses. Typically developing children showed greater load-dependent activation which intensified over time in the frontal, parietal and occipital lobes and the right fusiform gyrus, compared to those with autism spectrum disorder. Children with autism spectrum disorder showed minimal age-related changes in load-dependent activation, but greater longitudinal load-dependent deactivation in default mode network compared to typically developing children. Results suggest inadequate modulation of neural activity with increasing cognitive demands in children with autism spectrum disorder, which does not mature into adolescence, unlike their typically developing peers. Diminished ability for children with autism spectrum disorder to modulate neural activity during this period of maturation suggests that they may be more vulnerable to the increasing complexity of social and academic demands as they progress through adolescence than their peers.

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