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Updated: Apr 24, 2026
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Decomposing the Variance in Reading Comprehension to Reveal the Unique and Common Effects of Language and Decoding
Published on: October 11, 2018
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Developmental relations between vocabulary knowledge and reading comprehension: a latent change score modeling study.
Jamie M Quinn1, Richard K Wagner, Yaacov Petscher
1Florida State University.
Child Development
|September 10, 2014
Summary
Early vocabulary knowledge significantly boosts reading comprehension growth in elementary students. However, reading comprehension did not show a similar predictive effect on vocabulary development during this period.
Area of Science:
- Educational Psychology
- Developmental Psychology
- Language and Literacy Research
Background:
- Vocabulary knowledge and reading comprehension are crucial for academic success.
- Understanding the dynamic interplay between these skills during development is essential for effective interventions.
Purpose of the Study:
- To investigate the longitudinal, developmental relationship between vocabulary knowledge and reading comprehension in elementary school students.
- To determine if vocabulary knowledge predicts future reading comprehension growth, and vice versa.
Main Methods:
- Latent change score modeling was employed with a sample of 316 students from first to fourth grade.
- Repeated measurements of vocabulary knowledge and reading comprehension were analyzed to assess leading and lagging influences.
Main Results:
- Both vocabulary knowledge and reading comprehension exhibited growth patterns characterized by constant and proportional change.
- Past vocabulary knowledge was a significant predictor of subsequent reading comprehension growth.
- Reading comprehension did not predict future vocabulary knowledge growth.
Conclusions:
- Vocabulary knowledge plays a crucial role in driving reading comprehension development in early elementary years.
- Findings support targeted vocabulary interventions to enhance reading comprehension skills.
- The unidirectional relationship suggests a specific pathway in early literacy development.
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