Master of Science, The Ohio State University, 2021, Psychology
Abstract
Most language and reading researchers agree that reading is a language-based skill and that there is a connection between language ability and reading ability (Kamhi & Catts, 2012), especially between weaker language skills in early childhood and weaker reading skills in elementary school (McArthur et al., 2000; Catts et al., 2005).
This study employed the extant longitudinal Western Reserve Reading and Math Projects (WRRMP) to examine how phonological awareness, letter identification, and rapid automatized naming (RAN) skills in Kindergarten predicted reading skills by Third Grade. The WRRMP dataset includes 438 pairs of twins from primarily White, non-Hispanic, middle class, Midwestern families (Petrill et al., 2006). For this thesis, language assessment data from 452 Kindergarteners (mean age: 6;2, SD: 0.44) were compared to reading outcome measures of 524 Third Graders (mean age: 9;1, SD: 0.46). Language and decoding skills in Kindergarten were assessed using the deletion subtests of the Phonological Awareness Test, the letter identification subtest of the Woodcock Reading Mastery Tests–Revised Normative Update (WRM–RNU), and the Letter Naming Fluency task from the Dynamic Indicators of Basic Early Literacy Skills (DIBELS). Reading outcomes in Third Grade were measured on Passage Comprehension, Word Attack (decoding of non-words), and Word Identification (decoding of real words) from the WRM–RNU.
Significant correlations between letter identification (ranging from .305 to .435, p<0.01), phonological awareness (ranging from .377 to .563, p<0.01) and RAN (ranging from .231 to .297, p<0.01) on outcome measures for passage comprehension, non-word decoding, and real-word decoding were detected. Initial regression analysis showed that all three Kindergarten language measures contributed significantly to the variance of Third-Grade passage comprehension (R2=.293, F=21.144, p<0.01), non-word decoding (R2=.121, F=7.536, p<0.01), and real-word decoding (R2=.33 (open full item for complete abstract)
Committee: Stephen Petrill (Advisor); Rebecca McCauley (Committee Member); Sarah Schoppe-Sullivan (Committee Member)
Subjects: Developmental Psychology; Language; Reading Instruction