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Zvoch, Keith – Elementary School Journal, 2016
Piecewise growth models (PGMs) were used to estimate and model changes in the preliteracy skill development of kindergartners in a moderately sized school district in the Pacific Northwest. PGMs were applied to interrupted time-series (ITS) data that arose within the context of a response-to-intervention (RtI) instructional framework. During the…
Descriptors: Kindergarten, Emergent Literacy, Skill Development, School Districts
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Zvoch, Keith; Stevens, Joseph J. – Elementary School Journal, 2015
A one-group repeated-treatment design was used to examine the academic year and summer oral reading fluency outcomes for students attending a district-sponsored summer literacy program (N = 250). Piecewise growth models applied to longitudinal data obtained during the first and second grade and over the course of the intervening summer revealed…
Descriptors: Summer Schools, Summer Programs, Reading Difficulties, Grade 1