Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills

According to the Interactive Specialization Theory, cognitive skill development is facilitated by a process of neural specialization. In line with this theory, the current study investigated whether neural specialization for phonological and semantic processing at 5-to-6 years old was predictive of...

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Main Authors: Brianna L. Yamasaki, Karla K. McGregor, James R. Booth
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-10-01
Series:Frontiers in Human Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fnhum.2021.674119/full
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author Brianna L. Yamasaki
Karla K. McGregor
James R. Booth
author_facet Brianna L. Yamasaki
Karla K. McGregor
James R. Booth
author_sort Brianna L. Yamasaki
collection DOAJ
description According to the Interactive Specialization Theory, cognitive skill development is facilitated by a process of neural specialization. In line with this theory, the current study investigated whether neural specialization for phonological and semantic processing at 5-to-6 years old was predictive of growth in word reading skills 2 years later. Specifically, four regression models were estimated in which reading growth was predicted from: (1) an intercept-only model; (2) measures of semantic and phonological neural specialization; (3) performance on semantic and phonological behavioral tasks; or (4) a combination of neural specialization and behavioral performance. Results from the preregistered analyses revealed little evidence in favor of the hypothesis that early semantic and phonological skills are predictive of growth in reading. However, results from the exploratory analyses, which included a larger sample, added age at Time 1 as a covariate, and investigated relative growth in reading, demonstrated decisive evidence that variability in phonological processing is predictive of reading growth. The best fitting model included both measures of specialization within the posterior superior temporal gyrus (pSTG) and behavioral performance. This work provides important evidence in favor of the Interactive Specialization Theory and, more specifically, for the role of phonological neural specialization in the development of early word reading skills.
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spelling doaj.art-c04d869a4ca2474c9294b330a722646b2022-12-21T21:53:12ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612021-10-011510.3389/fnhum.2021.674119674119Early Phonological Neural Specialization Predicts Later Growth in Word Reading SkillsBrianna L. Yamasaki0Karla K. McGregor1James R. Booth2Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, United StatesBoys Town National Research Hospital, Omaha, NE, United StatesDepartment of Psychology and Human Development, Vanderbilt University, Nashville, TN, United StatesAccording to the Interactive Specialization Theory, cognitive skill development is facilitated by a process of neural specialization. In line with this theory, the current study investigated whether neural specialization for phonological and semantic processing at 5-to-6 years old was predictive of growth in word reading skills 2 years later. Specifically, four regression models were estimated in which reading growth was predicted from: (1) an intercept-only model; (2) measures of semantic and phonological neural specialization; (3) performance on semantic and phonological behavioral tasks; or (4) a combination of neural specialization and behavioral performance. Results from the preregistered analyses revealed little evidence in favor of the hypothesis that early semantic and phonological skills are predictive of growth in reading. However, results from the exploratory analyses, which included a larger sample, added age at Time 1 as a covariate, and investigated relative growth in reading, demonstrated decisive evidence that variability in phonological processing is predictive of reading growth. The best fitting model included both measures of specialization within the posterior superior temporal gyrus (pSTG) and behavioral performance. This work provides important evidence in favor of the Interactive Specialization Theory and, more specifically, for the role of phonological neural specialization in the development of early word reading skills.https://www.frontiersin.org/articles/10.3389/fnhum.2021.674119/fullphonological processingsuperior temporal gyrusword readingreading developmentinteractive specialization theoryfunctional magnetic resonance imaging
spellingShingle Brianna L. Yamasaki
Karla K. McGregor
James R. Booth
Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
Frontiers in Human Neuroscience
phonological processing
superior temporal gyrus
word reading
reading development
interactive specialization theory
functional magnetic resonance imaging
title Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
title_full Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
title_fullStr Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
title_full_unstemmed Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
title_short Early Phonological Neural Specialization Predicts Later Growth in Word Reading Skills
title_sort early phonological neural specialization predicts later growth in word reading skills
topic phonological processing
superior temporal gyrus
word reading
reading development
interactive specialization theory
functional magnetic resonance imaging
url https://www.frontiersin.org/articles/10.3389/fnhum.2021.674119/full
work_keys_str_mv AT briannalyamasaki earlyphonologicalneuralspecializationpredictslatergrowthinwordreadingskills
AT karlakmcgregor earlyphonologicalneuralspecializationpredictslatergrowthinwordreadingskills
AT jamesrbooth earlyphonologicalneuralspecializationpredictslatergrowthinwordreadingskills