Contributions of Phonological Awareness and Rapid Automatic Naming Ability to the Growth of Word-Reading Skills in Second-to Fifth-Grade Children

TLDR

Results are discussed in the context of methodological issues in using longitudinal‑correlational designs to study reading growth. The study tests whether individual differences in rapid automatic naming uniquely contribute to the growth of orthographic reading skills from second to fourth grade and from third to fifth grade. Analyses were conducted on a sample of about 200 children and on subsamples of the lowest 20 % and 10 % of readers to examine these relationships. When prior reading levels were omitted, both rapid naming and phonological awareness predicted later reading, but after controlling for prior reading, only phonological awareness uniquely explained growth across the second‑to‑fifth‑grade period.

Abstract

A longitudinal-correlational design was used to test the hypothesis that individual differences in rapid automatic naming make a unique contribution to explaining the growth of orthographic reading skills in 2 overlapping periods of development: second to fourth grade, and third to fifth grade. Separate analyses were done on the entire sample of approximately 200 children as well as on subsamples selected for impairment in word-reading development (bottom 20% and bottom 10% of readers). When second- and third-grade reading skills were not included in the multiple regressions, both rapid automatic naming and phonological awareness skills were strongly predictive of individual differences in reading 2 years later. With prior levels of reading skill included in the predictive equation, rapid automatic naming ability did not uniquely explain variance in any of the reading outcome measures. In contrast, individual differences in phonological awareness in both second and third grades did uniquely explain growth in a variety of reading skills over this developmental period. Results are discussed in the context of methodological issues in the use of longitudinal-correlational designs to study reading growth.