Developmental disorders impose significant public health and economic burdens on society. These conditions present substantial social, communication, and behavioral challenges throughout an individual's lifetime. It is well known that early diagnosis is crucial for enabling timely and effective interventions, which improve long-term outcomes for…

Understanding and addressing the literacy needs of middle school students is critical in ensuring their academic success. This quantitative study examines the literacy growth among middle school students participating in Tier II Response to Intervention and Instruction (RTI[superscript 2]) programs over the 2023-2024 academic year. It investigates…

As the research on feigning has grown, the number and quality of performance validity tests (PVTs) has increased as well. However, while several PVTs have been developed from assessments commonly used as part of neuropsychological batteries, there has been less exploration for PVTs scored from items in cognitive screeners. The Montreal Cognitive…

Psychosocial competencies; such as prosocial behaviors, compliance with authority, attention regulation, independence, and emotional regulation; play a crucial role in child development. Higher levels of these competencies in childhood are linked to fewer behavior problems, while deficits in these competencies can predict future problem behaviors.…

Social cognitive deficits are core features of schizophrenia spectrum disorders (SSD) or schizophrenia, amongst other conditions. These deficits limit overall functioning, arguably the most important outcome when treating the mentally ill. However, as noted by former National Institute of Mental Health director Thomas Insel, "one cannot treat…

With rising concerns for the mental health of school-aged youth, screening tools can be used to identify students who may be at-risk and in need of additional support. Despite the literature that supports the use of mental health screeners in schools, most schools in the United States are not doing so. There are several enabling and inhibiting…

Despite the plethora of research highlighting the adverse impacts on children's social emotional, behavioral, and physical wellbeing, children impacted by trauma are among the least likely to receive mental health services. Schools have been identified as a promising setting for early prevention and intervention, with evidence-based strategies…

This research study examined the difference between a formal pre-kindergarten (pre-K) experience and a non-formal pre-kindergarten experience and the impact it had on the academic achievement of kindergarten students. The study also examined the impact these experiences had on kindergarten students as it relates to the Phonological Awareness…

This study explored the identification and placement of historically underserved students (HUS) in Gifted and Talented (GT) programs in the State of Missouri. The researcher investigated if there was an inconsistent implementation of the Missouri Department of Elementary and Secondary Education (DESE) suggested approach to enhance equitable…

The data from universal screeners must be valid and reliable in order to use it to make appropriate decisions about how best to allocate resources to support students who are at risk of not passing the state achievement test. The instruments used as part of universal screening must also have diagnostic accuracy. This study examined the diagnostic…

Districts spend thousands of dollars on computerized teacher screeners without knowing if they are identifying the most effective teacher. Hiring quality staff is one of the most important job functions of a principal, and many times a teacher screener score may eliminate an effective teacher. The current study examined the value of teacher…

Individuals with unidentified Reading Disorders are at greater risk of poor learning and social-emotional outcomes. Early identification of Reading Disorders ameliorates the risk of school failure. Researchers link early identification of specific Reading Disorders, such as Dyslexia, to communication deficits. Specifically, toddler expressive…

This action-research dissertation explored how Standard Age Scores on the "Cognitive Abilities Test™" ("CogAT®") (Cognitive Abilities Test) Screening Form of underserved populations, as identified through gifted literature, compared to those students who are traditionally overserved with mental gifted identification within the…

The COVID-19 pandemic highlighted the critical need for enhanced outbreak preparedness against viruses. Key elements to this preparedness are robust disease surveillance systems and effective interventions to minimize disease transmission. While individual clinical testing is the conventional disease surveillance approach, environmental…

This dissertation conducted two studies that examined two methods of instructional planning to effectively match students to a whole number computation intervention that would best meet their needs. Study 1 was a systematic synthesis of all studies that used brief experimental analysis (BEA) to determine an effective mathematics intervention for…