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Summary
This study found that children develop praxis skills, the ability to perform movements on command or demonstration, in an orderly manner from ages 1 to 6. Early praxis abilities correlate with language and articulation skills, but this link weakens with age.
Area of Science:
- Developmental Psychology
- Motor Control
- Speech-Language Pathology
Background:
- Praxis, defined as skilled motor performance on command or demonstration, is crucial for development.
- Understanding the developmental trajectory of praxis is essential for identifying potential delays or disorders.
Purpose of the Study:
- To assess the emergence and development of praxis skills in typically developing male children aged 1 to 6 years.
- To examine the relationship between praxis abilities and language and articulation development.
Main Methods:
- Assessed 87 male children (ages 1-6) on four praxis measures: oral/limb praxis via command and demonstration.
- Correlated praxis measures with language and articulation development across age groups.
Main Results:
- Praxis skills emerged systematically from age 1, reaching near-complete performance by age 6.
- Following demonstration preceded following spoken commands.
- Praxis showed moderate correlations with articulation and language at age 2, diminishing with age.
Conclusions:
- Provides normative data for praxis development in young children.
- Suggests praxis skills develop independently but show early correlations with speech and language.
- Informs clinical research on childhood apraxia.