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Direct linkBogi Perelmutter – ProQuest LLC, 2022
This dissertation examines reported speech production among undergraduate college students with a history of developmental language disability (DLD) compared to controls with a history of typical language development (TD). 59 people participated across two separate studies. Study 1 involved a reanalysis of previously recorded in-person dyadic…
Descriptors: Undergraduate Students, Language Impairments, Language Acquisition, Speech Communication
Sanders, Elizabeth A. – ProQuest LLC, 2011
This paper explores multilevel modeling approaches for 2-group randomized experiments in which a treatment condition involving clusters of individuals is compared to a control condition involving only ungrouped individuals, otherwise known as partially nested cluster randomized designs (PNCRTs). Strategies for comparing groups from a PNCRT in the…
Descriptors: Computer Software, Educational Research, Monte Carlo Methods, Effect Size
Wang, Hequn – ProQuest LLC, 2009
Differential Item Functioning (DIF) is a group-related item/test characteristic targeting the issue of item/test bias. In this dissertation, a new DIF index is described that has three parts: (1) a DIF measure indicating the degree of different (item) performances between the reference and focal groups, (2) a DIF direction statement about the DIF…
Descriptors: Test Bias, Item Response Theory, Evaluation Methods, Measurement Techniques
Baly, Michael W. – ProQuest LLC, 2013
This dissertation is comprised of three manuscripts and presents a line of research aimed at improving the measurement of bullying in schools. The first manuscript investigated the impact of an educational video on self-reports of bullying. A sample of 1,283 middle school students in randomly assigned classrooms either watched or did not watch an…
Descriptors: Bullying, Measurement Techniques, Video Technology, Self Disclosure (Individuals)
Wang, Chunyun – ProQuest LLC, 2012
Introduction: Children today are under much more stress than a few decades ago due to academic pressure, family financial hardship, competition with peers, and stressed parents. Consequently, stress-related health issues and behavioral problems, such as cardiovascular diseases, headaches, insomnia, anxiety, depression, violent or withdrawal…
Descriptors: Health Promotion, Elementary School Students, Stress Variables, Exercise
Pennington, Rebecca E. – ProQuest LLC, 2010
This study was designed to determine whether teacher portfolios can be validly and reliably assessed, to investigate the effect of an instructional tool on increasing the level of reflective thinking in elementary preservice teachers' portfolios, and to find whether electronic portfolios designed and assessed in optimal conditions represent…
Descriptors: Portfolios (Background Materials), Control Groups, Preservice Teachers, Intervention
