Morpholexical Processes in Children with Autism Spectrum Disorder: Evidence from Artificial Word Learning

2021 ◽  
pp. 1-15
Author(s):  
Sara Ferman
Keyword(s):  
Autism Spectrum Disorder ◽  
Word Learning ◽  
Children With Autism ◽  
Daily Practice ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
Lexical Learning ◽  
Language Measures ◽  
Naming Tasks

<b><i>Objectives:</i></b> This study aims to investigate the ability of high-functioning children with autism spectrum disorder and normal language (ALN) to learn artificial words, and to investigate their ability to use their knowledge of morphophonological patterns for this learning. <b><i>Methods:</i></b> Children with ALN and typically developing (TD) children, matched for cognitive and language measures, learned 8 artificial Hebrew words during two daily practice sessions by means of identification and naming tasks. Half the words were constructed from existing morphophonological patterns, and the other half were constructed from pseudo-morphophonological patterns. The two types of words allowed the investigation of the participants’ ability to use their knowledge of morphophonological patterns (morpholexical processes) for word learning. Both accuracy and speed were measured. <b><i>Results:</i></b> The ALN group improved incrementally at a rate (slope) similar to that of the TD group in identifying and naming the artificial words, in both accuracy and speed. However, the ALN group were slower than their TD peers in learning to identify the artificial words. Both groups demonstrated higher accuracy and faster speed in both tasks in learning the artificial words with existing morphophonological patterns than those with pseudo-patterns. However, this gap was smaller in the ALN group in the accuracy of naming and marginal in speed of identification. <b><i>Conclusions:</i></b> Children with ALN possess a lexical learning mechanism that is qualitatively not atypical but may be less efficient than that of their TD peers, including exploiting knowledge of morphophonological patterns – where such patterns exist – for word learning.

scholarly journals Early screening of autism spectrum disorder using cry features

2020 ◽  
Author(s):  
Aida Khozaei ◽  
Hadi Moradi ◽  
Reshad Hosseini ◽  
Hamidreza Pouretemad ◽  
Bahareh Eskandari
Keyword(s):  
Autism Spectrum Disorder ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
New Classification ◽  
Early Screening ◽  
Classification Approach ◽  
Children With Asd ◽  
Sensitivity Specificity

AbstractDue to the importance of automatic and early autism screening, in this paper, a cry-based screening approach for children with Autism Spectrum Disorder (ASD) is introduced. During the study, we realized that the ASD specific features are not necessarily observable among all children with ASD and among all instances of each child. Therefore, we proposed a new classification approach to be able to find such features and their corresponding instances. We tested the proposed approach and found two features that can be used to distinguish groups of children with ASD from Typically Developing (TD) children. In other words, these features are present in subsets of children with ASD not all of them. The approach has been tested on a dataset including 14 boys and 7 girls with ASD and 14 TD boys and 7 TD girls, between 18 to 53 months old. The sensitivity, specificity, and precision of the proposed approach for boys were 85.71%, 100%, and 92.85%, respectively. These measures were 71.42%, 100%, and 85.71% for girls, respectively.

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.

scholarly journals Resistance to temptation in toddlers at genetic risk for autism spectrum disorder

Autism ◽  
2018 ◽  
Vol 23 (4) ◽  
pp. 1018-1027
Author(s):  
Susan B Campbell ◽  
Jessie B Northrup ◽  
Amy B Tavares
Keyword(s):  
Autism Spectrum Disorder ◽  
High Risk ◽  
Young Children ◽  
Self Regulation ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Low Risk ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
High Risk Children

Children with autism spectrum disorder often demonstrate difficulties with self-regulation, although studies of this construct in young children with autism spectrum disorder are limited. In this study, developmental changes were examined using a measure of self-regulation appropriate for young children, resistance to temptation. At 22, 28, and 34 months, toddlers with an older sibling with autism spectrum disorder (high risk) and toddlers with typically developing older siblings (low risk) were presented with an appealing toy and instructed not to touch it. Observers coded whether or not children touched the toy and the strategies they used to resist touching it. At 36 months, children were assessed for autism spectrum disorder, yielding three groups: high risk children with autism spectrum disorder, high risk children without autism spectrum disorder, and low risk children. At 22 months, most children, regardless of group, touched the forbidden toy; at 28 and 34 months, many high risk children without autism spectrum disorder and low risk children resisted the temptation to touch the toy, whereas most of the children with autism spectrum disorder did not. Differences in delay strategies were also evident. Some, but not all group differences, were accounted for by differences in language ability. Results highlight one early index of impulse control that differentiates children with emerging autism spectrum disorder from age-mates prior to the third birthday.

scholarly journals Longitudinal associations across vocabulary modalities in children with autism and typical development

Autism ◽  
2018 ◽  
Vol 23 (2) ◽  
pp. 424-435 ◽  
Author(s):  
Kristen Bottema-Beutel ◽  
Tiffany Woynaroski ◽  
Rebecca Louick ◽  
Elizabeth Stringer Keefe ◽  
Linda R Watson ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Receptive Vocabulary ◽  
Spectrum Disorder ◽  
Mediation Effect ◽  
Typically Developing ◽  
Autism Spectrum Disorder Group ◽  
Group A ◽  
Longitudinal Associations

We examined differences between children with autism spectrum disorder and typically developing children over an 8-month period in: (a) longitudinal associations between expressive and receptive vocabulary and (b) the extent to which caregiver utterances provided within an “optimal” engagement state mediated the pathway from early expressive to later receptive vocabulary. In total, 59 children (28–53 months at Time 1) comprised the autism spectrum disorder group and 46 children (8–24 months at Time 1) comprised the typically developing group. Groups were matched on initial vocabulary sizes. Results showed that the association between early expressive and later receptive vocabulary was moderated by group. A moderated mediation effect was also found, indicating linguistic input provided within an optimal engagement state only mediated associations for the autism spectrum disorder group.

scholarly journals Cross-modal generalization of receptive and expressive vocabulary in children with autism spectrum disorder

2019 ◽  
Vol 4 ◽  
pp. 239694151882449
Author(s):  
Pumpki L Su ◽  
George Castle ◽  
Stephen Camarata
Keyword(s):  
Autism Spectrum Disorder ◽  
Word Learning ◽  
Vocabulary Learning ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Expressive Vocabulary ◽  
Unique Challenge ◽  
Large Variability ◽  
Target Words

Background and aims Word 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. Methods A 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. Results All 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. Conclusion Contrary 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. Implications The 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.

Parents’ gesture adaptations to children with autism spectrum disorder

2019 ◽  
Vol 47 (1) ◽  
pp. 205-224 ◽  
Author(s):  
Hanako YOSHIDA ◽  
Paul CIRINO ◽  
Sarah S. MIRE ◽  
Joseph M. BURLING ◽  
Sunbok LEE
Keyword(s):  
Autism Spectrum Disorder ◽  
Bayesian Estimation ◽  
Children With Autism ◽  
Early Learning ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
Developmental Mechanism ◽  
Children With Asd ◽  
Cue Use

AbstractThe present study focused on parents’ social cue use in relation to young children's attention. Participants were ten parent–child dyads; all children were 36 to 60 months old and were either typically developing (TD) or were diagnosed with autism spectrum disorder (ASD). Children wore a head-mounted camera that recorded the proximate child view while their parent played with them. The study compared the following between the TD and ASD groups: (a) frequency of parent's gesture use; (b) parents’ monitoring of their child's face; and (c) how children looked at parents’ gestures. Results from Bayesian estimation indicated that, compared to the TD group, parents of children with ASD produced more gestures, more closely monitored their children's faces, and provided more scaffolding for their children's visual experiences. Our findings suggest the importance of further investigating parents’ visual and gestural scaffolding as a potential developmental mechanism for children's early learning, including for children with ASD.

scholarly journals Object-directed imitation in autism spectrum disorder is differentially influenced by motoric task complexity, but not social contextual cues

Autism ◽  
2017 ◽  
Vol 23 (1) ◽  
pp. 199-211 ◽  
Author(s):  
Lacey Chetcuti ◽  
Kristelle Hudry ◽  
Megan Grant ◽  
Giacomo Vivanti
Keyword(s):  
Autism Spectrum Disorder ◽  
Task Complexity ◽  
Children With Autism ◽  
Social Motivation ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Typically Developing ◽  
Motor Execution ◽  
Typically Developing Children ◽  
Socially Responsive

We examined the role of social motivation and motor execution factors in object-directed imitation difficulties in autism spectrum disorder. A series of to-be-imitated actions was presented to 35 children with autism spectrum disorder and 20 typically developing children on an Apple® iPad® by a socially responsive or aloof model, under conditions of low and high motor demand. There were no differences in imitation performance (i.e. the number of actions reproduced within a fixed sequence), for either group, in response to a model who acted socially responsive or aloof. Children with autism spectrum disorder imitated the high motor demand task more poorly than the low motor demand task, while imitation performance for typically developing children was equivalent across the low and high motor demand conditions. Furthermore, imitative performance in the autism spectrum disorder group was unrelated to social reciprocity, though positively associated with fine motor coordination. These results suggest that difficulties in object-directed imitation in autism spectrum disorder are the result of motor execution difficulties, not reduced social motivation.

Sign in / Sign up

Export Citation Format

Share Document