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Peer reviewed
Direct linkGoodwin, Amanda P.; Petscher, Yaacov; Carlisle, Joanne F.; Mitchell, Alison M. – Journal of Research in Reading, 2017
This study examined the dimensionality of morphological knowledge. The performance of 371 seventh- and eighth-graders on seven morphological knowledge tasks was investigated using confirmatory factor analysis. Results suggested that morphological knowledge was best fit by a bifactor model with a general factor of morphological knowledge and seven…
Descriptors: Morphology (Languages), Grade 7, Grade 8, Factor Analysis
Spencer, Mercedes; Muse, Andrea; Wagner, Richard K.; Foorman, Barbara; Petscher, Yaacov; Schatschneider, Christopher; Tighe, Elizabeth L.; Bishop, M. Denise – Reading and Writing: An Interdisciplinary Journal, 2015
We report results from two studies on the underlying dimensions of morphological awareness and vocabulary knowledge in elementary-aged children. In Study 1, 99 fourth-grade students were given multiple measures of morphological awareness and vocabulary. A single factor accounted for individual differences in all morphology and vocabulary…
Descriptors: Elementary School Students, Intermediate Grades, Grade 4, Middle School Students
Reed, Deborah K.; Petscher, Yaacov; Truckenmiller, Adrea J. – Reading Research Quarterly, 2017
This study explored the relationship between the reading ability and science achievement of students in grades 5, 8, and 9. Reading ability was assessed with four measures: word recognition, vocabulary, syntactic knowledge, and comprehension (23% of all passages were on science topics). Science achievement was assessed with state…
Descriptors: Reading Ability, Science Achievement, Middle School Students, Elementary School Students
