Digital Commons Network^™

Drinking Water And Autism: Using Spatial Cluster Detection To Explore Patterns Of Autism Cases In Lane County, Oregon, Sherry Sandreth

Walden Dissertations and Doctoral Studies

Autism Spectrum Disorders (ASD) are a complex array of neurological disorders with a diverse presentation, multiple etiologies, and long-term ramifications. Prevalence of ASD in the United States is about 1 in 50 children as of 2013, making it a significant public health problem. The etiology is not understood, and it is widely accepted that it is multicausal, with genetic and environmental influences. Prior research suggests an association between water source and ASD. Contaminants such as lead, arsenic, mercury, pharmaceuticals and pesticides found in water are associated with developmental disorders suggesting that a systematic review focused on water source was warranted. …

Nurses' Experiences Transitioning From Staff Nurse To Management In A Community Hospital, Jennifer Sylvia Buffenbarger

Walden Dissertations and Doctoral Studies

This project study addressed the problem of frequent turnover of nurse managers at a Northeastern community hospital. The lack of retention of nurse managers has led to attenuated support for the nursing staff who continued to hold the front line in patient care. The purpose of this qualitative bounded case study was to explore nurse managers' experiences with turnover in order to identify strategies for enhancing retention. Work empowerment and servant leadership theories served as the frameworks for the study. Research questions focused on nurse managers' perceptions of empowerment and servant leadership characteristics that were important in decisions to assume …

A Qualitative Case Study Of Strategies For Choosing And Evaluating Alternative Assessments In Online Higher Education, Robert James Streff

Walden Dissertations and Doctoral Studies

Studies have shown that not all students are assessed effectively using standard testing formats. However, it is unclear what alternative methodology would be useful to determine whether students have acquired the skills necessary for today's global market. This research study's purpose was to understand the processes instructors use when choosing and designing alternative assessments in higher education online courses to measure student performance. Using Gagné's conditions of learning and Bloom's Taxonomy as a framework to understand these processes, this qualitative case study examined 8 participants teaching online at Midwestern public universities. Interview data and course artifacts, including syllabi, rubrics, assessments, …

Exploring The Role Of Bookkeeping In Business Success, Mary-Jo Zimmerman

Walden Dissertations and Doctoral Studies

Small businesses support local economies by creating jobs and providing products and services, yet 50% of them fail within 5 years and only 30% of them survive for 10 years or more. The purpose of this qualitative explanatory case study was to explore how bookkeeping strategies helped 1 small business owner to sustain business growth over time. The sample was comprised of 1 small business owner who has been in business at least 5 years, experienced success, and achieved sustainability in Wake County, North Carolina. Systems theory served as the conceptual framework for this study. The data were collected through …

Small Business Survivability Beyond Five Years, Koyandome Freddy Koyagialo

Walden Dissertations and Doctoral Studies

The United States has a high failure rate of small businesses, with 30% of small business failing within the first 2 years. The objective of this case study was to explore strategies successful small business owners use to achieve profitability beyond 5 years. The purposive sample for this study included 4 owners of successful small businesses in Atlanta, Georgia, who have been in business for at least 5 years. The conceptual framework was built upon disruptive innovation and susceptibility theory. Data were collected through semistructured interviews and company documents. The analysis revealed 3 themes, market research, passion and determination, and …

Using The Wais-Iv To Detect Malingering, Thomas E. Bybee

Walden Dissertations and Doctoral Studies

This study used subtests of the WAIS-IV to detect evidence of malingering. Developing reliable tests for malingering could significantly reduce costs paid to malingering individuals. A within-group known-group design was used. There were 3 known-group conditions. The first group (G1) was instructed to take the tests honestly. The second group (G2) was asked to fake a cognitive disability while taking the tests. The third group (G3) took the tests while undergoing the cold-pressor method (hand immersed in cold water) of inducing pain. Analysis of variance was performed. That analysis appeared to have significant differences; post hock Bonferroni testing was done. …

Understanding The Relationships Among Students' Goal Orientations, Self-Efficacy, Anxiety, And Accelerated Academic Success In The Redesign Of Developmental Mathematics, Kelly Ann Hogan

Walden Dissertations and Doctoral Studies

The low success rates of increasing numbers of underprepared students taking developmental mathematics classes 'often minority and economically disadvantaged' are challenging community colleges across the United States. These students, who must start in the lowest levels of precollege mathematics courses, are unlikely to pass the first course and earn a credential. Using a mastery goal orientation theoretical framework, a quantitative, survey research design was used to ascertain any correlations between students' goal orientations, self-efficacy, test anxiety, and success in a new model of learning. Survey data were used to answer 3 research questions: (a) the relationship between success and students' …

A Quantitative Quasi-Experimental Study Of An Online High School Mathematics Remediation Program, Terry Meehan

Walden Dissertations and Doctoral Studies

The local problem that drove this study is that a high school in an upper middle class suburban city in Pennsylvania wants to improve its student scores on its end-of-course Algebra 1 Keystone Exam. The purpose of this study was to conduct a quantitative, quasi-experimental assessment of an online high school mathematics remediation program to determine if the remediation program was successful in its endeavor to remediate students. This research study, informed by the self-efficacy and the behaviorist learning theories, attempted to determine whether students who (a) scored below proficient on the May algebra exam and were placed in the …

Examining Data Privacy Breaches In Healthcare, Tanshanika Turner Smith

Walden Dissertations and Doctoral Studies

Healthcare data can contain sensitive, personal, and confidential information that should remain secure. Despite the efforts to protect patient data, security breaches occur and may result in fraud, identity theft, and other damages. Grounded in the theoretical backdrop of integrated system theory, the purpose of this study was to determine the association between data privacy breaches, data storage locations, business associates, covered entities, and number of individuals affected. Study data consisted of secondary breach information retrieved from the Department of Health and Human Services Office of Civil Rights. Loglinear analytical procedures were used to examine U.S. healthcare breach incidents and …

Nigerian Cancer Survivors' Perceptions Of Care Received From Health Care Professionals, Olusegun Akinsuli

Walden Dissertations and Doctoral Studies

Cancer patients worldwide receive care from multidisciplinary teams, and patients

sometimes have little or no knowledge about the different treatment options available, making communication with their care providers an important influence in how they perceive their care. Patient satisfaction with care is an important factor in determining survivorship. The increasing prevalence of cancer worldwide has become a huge public health issue. The World Health Organization has warned that the potential gains from combatting infectious diseases in Nigeria might be lost because of the increasing prevalence of cancer. The purpose of this grounded theory study was to obtain the perceptions of …

Secondary General Education Teachers' Perceptions Of Challenges For Inclusion Students With Autism, Karen Clark Clark

Walden Dissertations and Doctoral Studies

Many secondary students with autism (SWA) included in the general education (GE) classroom demonstrate academic and behavioral challenges. Most GE teachers who have inclusive SWA in their classes receive little or no training on evidence-based practices to address these challenges. The purpose of this qualitative bounded case study was to explore secondary GE teachers' perceptions of and experiences with the academic and behavioral challenges of inclusive SWA. Theoretical frameworks of the weak central coherence theory for autism and executive dysfunction grounded the study. Data from 6 purposefully chosen secondary GE inclusion teachers, who educated SWA and students with autism spectrum …

Developing Sustainable Leadership Strategies To Increase Corporate Revenue, Linda Goulet Crosby

Walden Dissertations and Doctoral Studies

The business environment is in constant flux where stakeholders encourage organizational leaders to consider sustainable business tactics alongside corporate profits. While most business leaders recognize the importance of including sustainability into corporate goals, evidence suggested that only 10% have sustainable action plans in place. Using the honeybee leadership model as the conceptual framework, the purpose of this qualitative case study was to explore the sustainable leadership strategies that business leaders from small- and medium- sized companies integrated to increase corporate revenue. These companies were B Corp certified which ensures a third party endorsement of sustainable practices. The data were collected …

Perceptions On Interventions Impacting The Self- Efficacy Of At-Risk Students, Natalie Giddens Giddens

Walden Dissertations and Doctoral Studies

Teachers need interventions to improve at-risk students' self-efficacy, which may improve their academic performance in school. The purpose of this qualitative case study was to explore the perceptions of elementary school teachers at a Texas public middle school as to what research-based interventions they felt would improve the self-efficacy of these students. Bandura's social cognitive theory, which framed the study, indicates that self-efficacy beliefs affect the courses of action that people seek and the choices people make. Many at-risk students who experience a lack of academic success have low self-efficacy, which may affect their school performance. The research questions that …

Epistemic Skills Deficiency In The Project Management Body Of Knowledge, Alex Hosch

Walden Dissertations and Doctoral Studies

Information Technology (IT) projects continue to fail despite being managed by certified Project Management Professionals (PMP) and professionally trained non-certified Project Managers (PM). This study addressed PMPs and qualified PMs who continue to experience IT project failure at a high rate. The purpose of this qualitative multiple case study was to explore perspectives of PMs and their understanding of project management best practices in the Guide to the Project Management Body of Knowledge (PMBOK). There were 5 research questions focused on IT project failures, lessons learned, trends, deficiencies in project management framework, and adherence to standard PM practices. This study …

Effects Of An Integrated Electronic Health Record On An Academic Medical Center, Kenneth E. Koppenhaver Ii

Walden Dissertations and Doctoral Studies

The debate about healthcare reform revolves around a triple aim of improving the health of populations, improving the patient experience, and reducing the cost of care. A major tool discussed in this debate has been the adoption of electronic health record (EHR) systems to record and guide care delivery. Due to low adoption rates and limited examples of success, the problem was a lack of understanding by healthcare organizations of how the EHR fundamentally changes an organization through the interactions of people, processes, and technology over time. The purpose of this case study was to explore the people, processes, and …

Strategies Technology Development Marketing Leaders Used To Commercialize A New Product Innovation, Roxie Mooney

Walden Dissertations and Doctoral Studies

Strategies for commercialization of a new product innovation are critical for gaining a sustainable level of customer acceptance and financial performance. The purpose of this single case study was to explore the commercialization strategies used by 5 technology development marketing leaders from a healthcare company in Washington state. The conceptual framework for this study was commercialization of innovation theory (CoI). The data were collected through semistructured interviews and company documentation, and analyzed using Yin's 5-step data analysis process for case studies to identify and code themes. Analysis of data generated 3 major themes: strategies implemented during the prelaunch phase, strategies …

The Effect Of Regulations On The Bottom-Line Of Traditional And Shadow Banks, Tsatsu Emmanuel Nyamadi

Walden Dissertations and Doctoral Studies

Return on equity is often associated with prudent risk-taking and the attraction of new clients in advanced economies like the United States, where shadow banks are not regulated. Researchers have contended that freedom from regulation encourages risk-taking and earning of higher profits, but there is a lack of empirical evidence addressing this relationship. The purpose of this quantitative study was to investigate whether lack of regulations result in increased return on equity. The theoretical framework was regulatory arbitrage by Ricks M, Gennaioli N, Shleifer A, and Vishny R. The research question addressed the relationship between regulation, profit margin, leverage, asset …

Teaching Practices That May Improve Student Achievement On The High School Assessment Program (Hsap) For English Language Arts, Lisa Payton

Walden Dissertations and Doctoral Studies

Students at an eastern United States high school have experienced low pass rates on the High School Assessment Program for English Language Arts (HSAP ELA) for the past 5 consecutive years. The HSAP ELA test is 1 of 2 exams that students must pass to receive a high school diploma. Students who failed the HSAP ELA were provided remedial content and test preparation courses and enrichment tutorials to pass the state's ELA high-stakes test. The purpose of this qualitative bounded case study was to explore the teaching practices used to improve student performance on the HSAP ELA test. The conceptual …

Southeastern High School Teachers' Perceptions And Experiences In Preparing Students For Required Standardized Testing, Alberta Raymond

Walden Dissertations and Doctoral Studies

The reauthorized No Child Left Behind requirement for annual state-mandated student examinations led some teachers to believe that they must teach solely for test preparation. This case study explored teachers' perceptions of preparing students for the state-mandated tests at an economically disadvantaged high school in the southeastern United States. Ten teachers were interviewed to understand their perceptions of 'teaching to the test,' feelings of pressure and stress, motivation to teach, and recommendations for integration of creative teaching strategies. The researcher collected demographic data, such as gender, grades taught, and subjects taught, and manually calculated frequencies and percentages. With an electronic …

A Program Evaluation Of The Comprehensive School Reform Model Making Middle Grades Work, Wycondia West

Walden Dissertations and Doctoral Studies

A Program Evaluation of the Comprehensive School Reform Model Making Middle Grades Work

by

Wycondia S. West

MA, Spring Hill College, 2002

BS, Spring Hill College, 1998

Doctoral Study Submitted in Partial Fulfillment

of the Requirements for the Degree of

Doctor of Education

Walden University

August 2016

There is increasing concern in the United States about the academic challenges that middle grade students face. Middle schools are not meeting accountability standards, and as a result students are not being adequately prepared for high school. In response to these concerns, a state in the southeastern United States adopted a comprehensive school …

Special Education Teachers' Sense Of Efficacy And Reading Achievement Of Students With Severe Disabilities, Melissa Victoria Beck Wells

Walden Dissertations and Doctoral Studies

Assessment scores indicated students with severe disabilities (SWSD) have not been performing to their maximum potential, which may lead to lower quality of life after graduation. Teacher efficacy has been shown to impact student achievement; thus, this study involved exploring the teacher efficacy of the teachers of SWSD. Tschannen-Moran, Woolfolk Hoy, and Hoy's teacher efficacy conceptual framework guided this nonexperimental correlation study to investigate if levels of self-efficacy, years of overall teaching experience, and years of teaching experience with Grade 3 to 8 SWSD were predictors of student reading achievement in a New York City school district. Two open-ended questions …

Relationship Between Teacher Inquiry Science Instruction Self-Efficacy And Student Achievement, Grace Hanners

Walden Dissertations and Doctoral Studies

Standardized test data indicate that student achievement in science is a problem both nationally and locally. At the study site, only a small percentage of fifth-grade students score at the advanced level on the Maryland state science assessment (MSA). In addition, the performance of African American, economically disadvantaged, and special education students is well below that of the general student population. Some studies have shown that teacher self-efficacy affects student achievement. Therefore, the purpose of this study was to explore the relationship between fifth-grade teacher inquiry science instruction self-efficacy scores and the scores of their students on the MSA. Bandura's …

High School Seniors' Knowledge About College And The Acquisition Of College-Readiness Skills, Karen Franklin Mcsherry

Walden Dissertations and Doctoral Studies

Lack of college readiness, which affects persistence in college, is a problem for many students at a high school in New Jersey. Only 1 in 5 students in this school persist from first to second year in New Jersey public colleges and universities, and as many as 50% do not graduate in 4 years. This problem is important to study because low persistence may engender personal failure, familial debt, social stigma, and wasted public funds. Guided by Bandura's social learning theory, this qualitative case study addressed the lack of college readiness by exploring what high school students know about going …

Ethical Behavior, Leadership, And Decision Making, Emmett Emery

Walden Dissertations and Doctoral Studies

Ethical principles applied in organizations can broaden individual and corporate priorities beyond profit and shareholder enrichment. Ethical factors may influence leaders to make sound decisions to protect the organization from unethical behavior. The purpose of this study was to examine if a correlation exists between the independent variables of leadership and decision making, and the dependent variable of ethical behavior. Drucker's theory of management served as the theoretical framework. Data collection involved 2 survey instruments, the Authentic Leadership Questionnaire and the Moral Potency Questionnaire from 98 participants from retail businesses in the southwestern United States. The model as a whole …

Teachers Perceptions Of Barriers To Universal Design For Learning, Mary Elizabeth Jordan Anstead

Walden Dissertations and Doctoral Studies

Universal Design for Learning (UDL) has been identified as a contemporary instructional model for promoting inclusion and equitable opportunities for diverse and struggling learners. However, research regarding teachers' perceptions of UDL and its effective implementation is limited, making planning, implementing, and providing professional development difficult for administrators. Guided by the constructivist views of Vygotsky and Piaget, this qualitative case study was designed to understand teachers' knowledge and perceptions of how UDL can be used to promote equitable inclusive instruction, implementation barriers, educational applications for UDL, and perceived needs to implement UDL. Participants were teachers who had implemented UDL from a …

Perceptions Of Inclusion Factors By General Education Teachers And Administrators, Rashelle Janine Mckenzie

Walden Dissertations and Doctoral Studies

Special needs learners (SNL) under-perform on state benchmark measurements despite the efforts of general education teachers to implement inclusion effectively. Using Bandura's theory of self-efficacy as a framework, the purpose of this study was to explore perceptions toward factors for implementing successful inclusion in a high performing school. Research questions explored the perceptions regarding methodology used to implement inclusion, barriers or facilitators of the implementation process, and how inclusion affects the attitude and self-efficacy of general education teachers when teaching SNL. A qualitative case study design was applied within a purposeful sample of 5 general education teachers participating in a …

Examination Of Resource Allocation And Student Achievement, Jo Ann Neal

Walden Dissertations and Doctoral Studies

Despite the raise in per-pupil expenditures, the achievement gap between economically advantaged and disadvantaged students continues to increase. Education proponents are scrambling to understand the complexities of local school funding. The No Child Left behind deadline stipulated that all students must be proficient in language arts and mathematics by 2014. The constructivist theory served as the conceptual framework for the study. Performance data were obtained from the State of New Jersey Department of Education and the United States Department of Education. This quantitative study determined whether a significant relationship exists between the allocation of fiscal resources and students' test scores. …

Excess Corporate Cash And Mutual Fund Performance, Shay E. Richardson

Walden Dissertations and Doctoral Studies

Corporations may experience lower earnings on assets due to the underinvestment of excess cash. Specifically, leaders of nonfinancial firms hold small amounts of cash in mutual fund investments. The primary benefit to understanding mutual funds is the potential to use them to manage excess corporate cash. Using the efficient market hypothesis as a framework for the study, the purpose of this correlational study was to examine the relationship among mutual fund expenses including 12b-1 fees, sales load at purchase, management fees, total capitalization, and performance. Secondary research databases were used, including the Steele Mutual Fund Expert and the U.S. Securities …

Teachers' Practice Of Mathematical Reform Techniques In The Classroom, Mark Turner

Walden Dissertations and Doctoral Studies

In 1989, the National Council of Teachers of Mathematics advocated for a reform mathematics approach to mathematics education. Teachers in a large suburban school district in the southeastern United States are expected to use strategies that are consistent with reform mathematics. It is not known whether faculty members of a large elementary school in that district have adopted reform mathematics teaching strategies. Reform mathematics is an endeavor to move away from the traditional, direct instruction approach of the teacher as the sole provider of information toward the teacher as a facilitator of knowledge. Reform mathematics allows students to construct their …

Falls And Related Injuries Based On Surveillance Data: U.S. Hospital Emergency Departments, George K. Quarranttey

Walden Dissertations and Doctoral Studies

Falls can lead to unintentional injuries and possibly death, making falls an important public health problem in terms of related health care cost, incurred disabilities, and years of life lost. Approximately 1 in every 3 Americans ages 65 years and older is at risk of falling at least once every year. Children, young adults, and middle-aged adults are also vulnerable to falls. The purpose of this study was to examine the epidemiology of falls and fall-related injuries using surveillance data from nationally representative samples of hospital emergency departments in United States. The study was guided by a social-ecological model on …