This dissertation consists of three manuscripts. The manuscripts contribute to a budding "methodological reform" currently taking place in quantitative second-language (L2) research. In the first manuscript, the researcher describes an empirical investigation on the application of two well-known effect size estimators, eta-squared (eta…

This study describes the relationship between phonemic awareness and the reading achievement of kindergarten students. The purpose of this quantitative, time series, a two-year study was conducted to examine why some kindergarteners are not phonemically aware when leaving kindergarten and entering first grade. This study hypothesizes that…

Clear speech is a speaking style that has been shown to improve intelligibility in adverse listening conditions, for various listener and talker populations. Clear-speech phonetic enhancements include a slowed speech rate, expanded vowel space, and expanded pitch range. Although clear-speech phonetic enhancements have been demonstrated across a…

The purpose of this study was two-fold. First, this study examined the difference in the State of Texas Assessments of Academic Readiness [STAAR's] academic achievement (Math, Science, Reading and Writing) scores of secondary students by instructional status (Single teaching and Co-teaching). Second, this study investigated the predictability of…

Introduction: The excessive consumption of alcohol by college students is a major public health problem in the U.S. Heavy alcohol use has been linked to numerous consequences ranging from less serious effects (i.e.., hangovers) to death. Decades of research have linked certain beliefs, attitudes or motivations to drinking behavior but intensive…

Each of the states bordering Mississippi invests large amounts of money in providing children with state-funded pre-k programs in their public schools. However, Mississippi falls behind these states and does not similarly invest in this effort to provide many of its children with the opportunity to attend state-funded pre-k programs. Because…

Historically, special populations of students have had accelerated challenges during their pursuit for education (Russell, Toomey, Ryan, & Diaz, 2014). These accelerated challenges have included, communication barriers due to cultural differences, receiving harsher punishments than other students, and feeling out of place (Russell et al.,…

The purpose of this study was to collect information that could be used to explain whether supplemental educational programs are effective in improving academic progress in middle school mathematics. In addition, data were used to assess the first time success rate on the Criterion Referenced Competency Test (CRCT) for students who participated in…

A commonly held belief among educators, researchers, and students is that high-quality texts are easier to read than low-quality texts, as they contain more engaging narrative and story-like elements. Interestingly, these assumptions have typically failed to be supported by the writing literature. Research suggests that higher quality writing is…

This study examined teacher and administrator perceptions of their school as a learning organization and the degree to which students graduate "college-ready." The study followed a mixed-methods design to explore the hypothesis that the extent to which teachers and administrators perceive their school as a learning organization is…

Firms are often embedded in a technology ecosystem comprised of complementary technologies that span multiple product markets. In this dissertation, I examine how complementarity between the firm's technologies influences its strategies to create and appropriate value in the ecosystem. I investigate this overarching question in two contexts:…

A public school superintendent, as the chief executive officer in a district, is in a unique position to influence the programs addressing the needs of gifted students in that district. A superintendent's beliefs could impact program content, resource allocation, and priority status. This study looked at superintendents' perceptions of the North…

We still know surprisingly little about how grammatical structures are selected for use in sentence production. A major debate concerns whether structural selection is competitive or noncompetitive. Competitive accounts propose that alternative structures or structural components actively suppress one another's activation until one option reaches…

Remedial mathematics has been considered the roadblock to obtaining a college degree by students and educators for years. The purpose of this research is to determine the optimal time and delivery method of the three presented (fully module, module with a traditional lecture component, and fully on-line) for teaching remedial mathematics. This is…

Organizations continue to rely on information technology (IT) as a foundational element, yet poor IT project success continues to impact growth and innovation. Research into IT project success is widespread yet has focused on high-level project management attributes, not specific IT solutions. A review of the research literature revealed that the…