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Fine motor skill and expressive language in minimally verbal and verbal school-aged autistic children.

Autism research : official journal of the International Society for Autism Research2023

Butler Lindsay K, Tager-Flusberg Helen

What this study means for families

Researchers studied how hand and finger coordination (fine motor skills) relates to speaking abilities in autistic children aged 4-7. They found that children with better fine motor skills spoke more clearly and used longer sentences. This connection was strongest for children who speak very little (minimally verbal). The study suggests that activities to improve hand coordination might help these children develop clearer speech alongside traditional speech therapy.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Research summary

This study examined the relationship between fine motor skills and different aspects of expressive language in school-aged autistic children (ages 4-7), comparing minimally verbal and verbal groups. Using natural language sampling, researchers found that fine motor skills predicted speech intelligibility (clarity of speech) and structural language complexity (mean length of utterance). However, fine motor skills did not predict social-pragmatic language use (conversational turns). The relationship between fine motor skills and speech intelligibility was particularly strong for minimally verbal children but not verbal children.

Both groups showed associations between fine motor skills and utterance length. These findings suggest fine motor interventions may be especially beneficial for minimally verbal autistic children's speech development.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Key findings

  • 1

    Fine motor skills predicted speech intelligibility (clarity of speech) in autistic children

    Confidence: moderateRelevance: high
  • 2

    Fine motor skills predicted structural language complexity (mean length of utterance) in both minimally verbal and verbal children

    Confidence: moderateRelevance: high
  • 3

    Fine motor skills did not predict social-pragmatic language use (conversational turns)

    Confidence: moderateRelevance: moderate
  • 4

    The relationship between fine motor skills and speech intelligibility was significant for minimally verbal but not verbal children

    Confidence: moderateRelevance: high

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Clinical implications

Fine motor interventions may be particularly beneficial for minimally verbal autistic children's speech development. Therapists should consider integrating fine motor activities with speech therapy, especially for children with limited verbal abilities. The differential effects suggest individualized approaches based on verbal status may be warranted.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Limitations

Sample size not reported limits assessment of study power. Study design unclear from abstract. Cross-sectional nature (if applicable) prevents causal inferences. Limited age range (4-7 years) restricts generalizability to other developmental periods. Unclear methodology for natural language sampling and fine motor assessment.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Original abstract

Fine motor skill is associated with expressive language outcomes in infants who have an autistic sibling and in young autistic children. Fewer studies have focused on school-aged children even though around 80% have motor impairments and 30% remain minimally verbal (MV) into their school years. Moreover, expressive language is not a unitary construct, but it is made up of components such as speech production, structural language, and social-pragmatic language use. We used natural language sampling to investigate the relationship between fine motor and speech intelligibility, mean length of utterance and conversational turns in MV and verbal autistic children between the ages of 4 and 7 while controlling for age and adaptive behavior.

Fine motor skill predicted speech production, measured by percent intelligible utterances. Fine motor skill and adaptive behavior predicted structural language, measured by mean length of utterance in morphemes. Adaptive behavior, but not fine motor skill, predicted social-pragmatic language use measured by number of conversational turns. Simple linear regressions by group corrected for multiple comparisons showed that fine motor skill predicted intelligibility for MV but not verbal children.

Fine motor skill and adaptive behavior predicted mean length of utterance for both MV and verbal children. These findings suggest that future studies should explore whether MV children may benefit from interventions targeting fine motor along with speech and language into their school years.

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Evidence Grade

Emerging

limited

Grade assigned by AutismInsights based on study type and published abstract.

Study Details

Journal
Autism research : official journal of the International Society for Autism Research
Year
2023
PMID
36578205
DOI
10.1002/aur.2883

MeSH Terms

InfantChildHumansChild, PreschoolAutistic DisorderMotor SkillsAutism Spectrum DisorderLanguageSpeechVerbal Behavior