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The development of eye-movement control for passage reading in elementary school children
Dissertation   Open access

The development of eye-movement control for passage reading in elementary school children

Charlotte Jeppsen
University of Iowa
Doctor of Philosophy (PhD), University of Iowa
Autumn 2025
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Abstract

Children must move their eyes efficiently when they read. In adults, eye movements made during passage reading (PREMs) are associated with critical reading skills like word recognition (i.e., fixation durations) and comprehension (i.e., regressions). Some work with children has linked longer fixation durations to weaker word-level skills, however these studies are limited in the range of PREMs and subskills that are investigated, and the analytic approaches that are used. Critically, no work has investigated the mechanisms for how children develop efficient eye movements. Four studies in this dissertation better characterize the processes that PREMs represent and the mechanisms that may lead towards their development. All data came from a large accelerated longitudinal project, The Growing Words project. The first study characterized the word-level and oral language subskills underlying children’s individual PREMs and PREM dimensions. The second study asked whether these processes are more noticeable when children read lexically and syntactically (structurally) complex text. The third study asked whether these PREMs indicate reading difficulty or engagement when reading complex text, by asking how reading abilities like decoding and oral language moderate the effect of complexity. The fourth study investigated mechanisms leading to PREM development across three years of data from the accelerated longitudinal project using longitudinal growth curves and a series of cross-lag panel models. Across studies, results show that word-level skills (decoding and efficient lexical access) are one of the most prevalent predictors of PREM behavior. Importantly, a principal component analysis revealed that individual PREMs coalesce into basic dimensions that describe readers as a whole, like whether their eye-movements are methodical or disorganized. This work reveals a set of behaviors that predict reading independent of traditional subskills like word reading and oral language, and that adapt to reading challenges.
Psycholinguistics development eye-movements reading word recognition Language

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