Quantitative Methodology and Innovation

Quantitative Methodology & Innovation

Welcome to Quantitative Methodology and Innovation (QMI).

QMI’s mission is to advance scientific discovery through multi-disciplinary collaboration on research design, data analysis, and innovation in quantitative methods and assessment. Please use the navigation bar to learn more about QMI’s mission, people, projects, and products.


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Conditional Longitudinal Relations of Elementary Literacy Skills to High School Reading Comprehension


The Journal of Learning Disabilities recently accepted a paper titled, “Conditional Longitudinal Relations of Elementary Literacy Skills to High School Reading Comprehension,” authored by Yaacov Petscher, Hugh Catts, and Emily Solari. The study explores the longitudinal development between Grade 3 word level reading skills and higher level semantic skills to Grade 10 reading comprehension for 3,157 students.

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Differential Co-Development of Vocabulary Knowledge and Reading Comprehension for Students with and without Learning Disabilities


A paper was recently accepted in the Journal of Educational Psychology entitled, ‘Differential Co-Development of Vocabulary Knowledge and Reading Comprehension for Students with and without Learning Disabilities.” This paper looked at the co-development of reading comprehension and vocabulary knowledge for students followed from Kindergarten through 4th grade using latent change score modeling.

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