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Updated: May 21, 2026

Using Cholesky Decomposition to Explore Individual Differences in Longitudinal Relations between Reading Skills
Published on: September 17, 2019
Developmental relations between reading fluency and reading comprehension: a longitudinal study from Grade 1 to Grade
Young-Suk Kim1, Richard K Wagner, Danielle Lopez
1Florida Center for Reading Research and College of Education, Florida State University, Tallahassee, FL 32306, USA. ykim@fcrr.org
Early reading skills evolve: list reading fluency aids comprehension in Grade 1, while text reading fluency becomes key in Grade 2. Oral fluency is vital early, shifting to silent fluency later for reading comprehension development.
Area of Science:
- Developmental psychology
- Educational psychology
- Cognitive science
Background:
- Reading skills develop dynamically throughout early elementary years.
- The interplay between different reading facets (fluency, comprehension) changes with age.
- Understanding these developmental shifts is crucial for effective reading instruction.
Purpose of the Study:
- To investigate the developmental changes in the relationships between various reading skills.
- To examine how list reading fluency, text reading fluency (oral and silent), and listening comprehension relate to reading comprehension in first and second graders.
- To determine the unique contributions of each skill to reading comprehension at different developmental stages.
Main Methods:
- A longitudinal study design was employed.
- Latent-variable modeling was used to analyze the data.
- Participants included first and second graders assessed over time.
Main Results:
- List reading fluency uniquely predicted reading comprehension in Grade 1, but not Grade 2.
- Text reading fluency uniquely predicted reading comprehension in Grade 2, but not Grade 1.
- Oral reading fluency was uniquely linked to reading comprehension in Grade 1, while silent reading fluency was uniquely linked in Grade 2.
Conclusions:
- The predictive relationship between specific reading fluency types and reading comprehension shifts significantly between first and second grade.
- Early reading development shows a transition from list-based to text-based fluency importance.
- Instructional approaches may need to adapt to these evolving developmental pathways in reading skills.
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