Related Experiment Video
Updated: Mar 1, 2026

Using Cholesky Decomposition to Explore Individual Differences in Longitudinal Relations between Reading Skills
Published on: September 17, 2019
Longitudinal Associations Among Reading-Related Skills and Reading Comprehension: A Twin Study
Florina Erbeli1, Sara A Hart1, Jeanette Taylor2
1Florida Center for Reading Research, Florida State University.
Abstract:
This study investigated the etiology of longitudinal relations among kindergarten prereading skills, first-grade word level reading skills, and seventh-grade reading comprehension in 265 monozygotic and 459 dizygotic twin pairs (Mage = 6.29 years in kindergarten) from the Florida Twin Project on Reading. Using a quadvariate Cholesky decomposition, results showed genetic, shared, and nonshared environmental overlap among prereading skills, word level reading skills, and reading comprehension. In addition, genetic and shared environmental overlap was indicated among word level reading skills and reading comprehension, outside the influence of prereading skills. After accounting for overlapping, there remained moderate genetic and nonshared environmental influence specific to reading comprehension. Implications for reading education are discussed.
More Related Videos
06:33Decomposing the Variance in Reading Comprehension to Reveal the Unique and Common Effects of Language and Decoding
Published on: October 11, 2018
05:54Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
Published on: October 18, 2018
Related Concept Videos
Language and Cognition
Longitudinal Studies
Learning Disabilities
Dyslexia
Dyslexia is a...
Longitudinal Research
Information Processing Approach
Correlations