Current Search: assessment (x)
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- Title
- Assessment Center Structure and Construct Validity: A New Hope.
- Creator
-
Wiese, Christopher, Jentsch, Kimberly, Salas, Eduardo, Jentsch, Florian, Burke, Shawn, University of Central Florida
- Abstract / Description
-
Assessment Centers (ACs) are a fantastic method to measure behavioral indicators of job performance in multiple diverse scenarios. Based upon a thorough job analysis, ACs have traditionally demonstrated very strong content and criterion-related validity. However, researchers have been puzzled for over three decades with the lack of evidence concerning construct validity. ACs are designed to measure critical job dimensions throughout multiple situational exercises. However, research has...
Show moreAssessment Centers (ACs) are a fantastic method to measure behavioral indicators of job performance in multiple diverse scenarios. Based upon a thorough job analysis, ACs have traditionally demonstrated very strong content and criterion-related validity. However, researchers have been puzzled for over three decades with the lack of evidence concerning construct validity. ACs are designed to measure critical job dimensions throughout multiple situational exercises. However, research has consistently revealed that different behavioral ratings within these scenarios are more strongly related to one another (exercise effects) than the same dimension rating across scenarios (dimension effects). That is, results from ACs suggest that we are unsure of what these behavioral measures represent. Over the last three decades, researchers have sought to illuminate why same dimension ratings are inconsistent across scenarios. However, these investigations have been limited to changes influencing the source of the ratings (e.g., assessors, trained raters). No approach has been taken to change the structure of the AC. This study breaks with tradition and introduces a structurally different AC: A Day-In-The Life AC (DITLAC). A DITLAC structure is designed to mimic that of a normal day on the job. In the present study, the construct validity between a DITLAC and a traditionally structured AC is compared with the argument that the DITLAC will demonstrate stronger construct validity evidence. In several cases, this was found to be true.
Show less - Date Issued
- 2015
- Identifier
- CFE0005905, ucf:50878
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005905
- Title
- Sustainability Assessment of a Municipal Utility Complex: a System of Systems Approach.
- Creator
-
Fahmy, Tarek, Oloufa, Amr, Tatari, Omer, Al-Deek, Haitham, Kincaid, John, University of Central Florida
- Abstract / Description
-
Construction of municipal utility complexes has to support continuing population growth, economic development, and a widespread of social interest in environmental preservation. Municipalities face challenges in designing, constructing, and operating environmentally sustainable utility complexes, and their primary goal in developing such a complex is to minimize the environmental impact resulting from energy production and waste treatment (both liquid and solid), management, and disposal....
Show moreConstruction of municipal utility complexes has to support continuing population growth, economic development, and a widespread of social interest in environmental preservation. Municipalities face challenges in designing, constructing, and operating environmentally sustainable utility complexes, and their primary goal in developing such a complex is to minimize the environmental impact resulting from energy production and waste treatment (both liquid and solid), management, and disposal. However, decision and policy makers lack a system of systems approach that takes into account multiple interdependent systems comprised of the functional system (infrastructure, facilities, operations within the complex), the economic system, the social/cultural system, and the environmental system (environmental impact on air, water, soil). This research proposes a decision support system (DSS) with a new methodology using Vensim software and system dynamics methodology to assess the sustainability of a municipal utility complex system. This DSS incorporates 1) multiple interdependent systems, 2) multiple sustainability/performance indices, and 3) composite sustainability index. Engineers, managers, and researchers should benefit from a system of systems perspective, and from the application of a sustainability assessment method that is developed to provide an environmentally-conscious design, construction and management. Although a municipal utility complex is built with synergistic opportunities for integration of processes of a wastewater treatment plant, a resource recovery facility (aka waste-to-energy (WTE) or incineration facility), a material recycling facility (MRF), and a landfill; engineers tend to use the traditional sustainability assessment methods only to assess the life cycle (LCA) of each system's process over time. They might not necessarily incorporate an assessment based on system dynamics of the functional, economic, environmental, and social/cultural systems. Data from a case study is utilized in this dissertation based on the municipal utility complex in Pasco County in the western region of the State of Florida, USA.
Show less - Date Issued
- 2015
- Identifier
- CFE0005944, ucf:50809
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005944
- Title
- A curricula assessment and improvement quantitative model for higher education: a design for six sigma methodology.
- Creator
-
Halawany, Abdullah, Elshennawy, Ahmad, Lee, Gene, Rabelo, Luis, Rahal, Ahmad, University of Central Florida
- Abstract / Description
-
Curricula assessment is an integrated process to assist higher education institutions in addressing the challenges in adesignated field of study and in exploring the opportunities to better educate and prepare their students for an increasinglycomplex world.Although assessment as a topic has been researched extensively, there has been a lack of quantitative tools that addressthe requirements of many of the stakeholders that may be critical to the curriculum design and assessment processes...
Show moreCurricula assessment is an integrated process to assist higher education institutions in addressing the challenges in adesignated field of study and in exploring the opportunities to better educate and prepare their students for an increasinglycomplex world.Although assessment as a topic has been researched extensively, there has been a lack of quantitative tools that addressthe requirements of many of the stakeholders that may be critical to the curriculum design and assessment processes.This research proposes the utilization of Design for Six Sigma (DFSS) to develop a quantitative model for curriculumassessment and improvement for higher education institutions. A review of the literature indicates that there is a lack ofquantitative tools that enhance the reliability and efficiency of gathering customer requirements for curriculum in highereducation environment. In addition, there is a lack of tools to translate these requirements into actual characteristics that canbe used for curriculum design and assessment purposes. The literature also indicates that curriculum assessment is one ofseveral educational processes that affect the quality of education.This research proposes a quantitative model for curriculum assessment and improvement in higher education institutions,utilizing design for six sigma methodology. The proposed model explores the use of the Kano model concept to translateneeded requirements into desirable curriculum attributes and the general concept of establishing transfer function todetermine the level at which those requirements have been satisfied. The use of the developed model can help improvestudent learning and provide curriculum stakeholders with timely feedback about the curriculum and identify areas in need ofimprovement.To validate the capability of the proposed model, an ABET accredited department of Industrial Engineering in a USuniversity was used a case study.
Show less - Date Issued
- 2014
- Identifier
- CFE0005344, ucf:50497
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005344
- Title
- Life Cycle Sustainability Assessment Framework for the U.S. Built Environment.
- Creator
-
Kucukvar, Murat, Tatari, Mehmet, Oloufa, Amr, Behzadan, Amir, Al-Deek, Haitham, Pazour, Jennifer, University of Central Florida
- Abstract / Description
-
The overall goals of this dissertation are to investigate the sustainability of the built environment, holistically, by assessing its Triple Bottom Line (TBL): environmental, economic, and social impacts, as well as propose cost-effective, socially acceptable, and environmentally benign policies using several decision support models. This research is anticipated to transform life cycle assessment (LCA) of the built environment by using a TBL framework, integrated with economic input-output...
Show moreThe overall goals of this dissertation are to investigate the sustainability of the built environment, holistically, by assessing its Triple Bottom Line (TBL): environmental, economic, and social impacts, as well as propose cost-effective, socially acceptable, and environmentally benign policies using several decision support models. This research is anticipated to transform life cycle assessment (LCA) of the built environment by using a TBL framework, integrated with economic input-output analysis, simulation, and multi-criteria optimization tools. The major objectives of the outlined research are to (1) build a system-based TBL sustainability assessment framework for the sustainable built environment, by (a) advancing a national TBL-LCA model which is not available for the United States of America; (b) extending the integrated sustainability framework through environmental, economic, and social sustainability indicators; and (2) develop a system-based analysis toolbox for sustainable decisions including Monte Carlo simulation and multi-criteria compromise programming. When analyzing the total sustainability impacts by each U.S. construction sector, (")Residential Permanent Single and Multi-Family Structures" and "Other Non-residential Structures" are found to have the highest environmental, economic, and social impacts compared to other construction sectors. The analysis results also show that indirect suppliers of construction sectors have the largest sustainability impacts compared to on-site activities. For example, for all U.S. construction sectors, on-site construction processes are found to be responsible for less than 5 % of total water consumption, whereas about 95 % of total water use can be attributed to indirect suppliers. In addition, Scope 3 emissions are responsible for the highest carbon emissions compared to Scope 1 and 2. Therefore, using narrowly defined system boundaries by ignoring supply chain-related impacts can result in underestimation of TBL sustainability impacts of the U.S. construction industry.Residential buildings have higher shares in the most of the sustainability impact categories compared to other construction sectors. Analysis results revealed that construction phase, electricity use, and commuting played important role in much of the sustainability impact categories. Natural gas and electricity consumption accounted for 72% and 78% of the total energy consumed in the U.S. residential buildings. Also, the electricity use was the most dominant component of the environmental impacts with more than 50% of greenhouse gases emitted and energy used through all life stages. Furthermore, electricity generation was responsible for 60% of the total water withdrawal of residential buildings, which was even greater than the direct water consumption in residential buildings. In addition, construction phase had the largest share in income category with 60% of the total income generated through residential building's life cycle. Residential construction sector and its supply chain were responsible for 36% of the import, 40% of the gross operating surplus, and 50% of the gross domestic product. The most sensitive parameters were construction activities and its multiplier in most the sustainability impact categories.In addition, several emerging pavement types are analyzed using a hybrid TBL-LCA framework. Warm-mix Asphalts (WMAs) did not perform better in terms of environmental impacts compared to Hot-mix Asphalt (HMA). Asphamin(&)#174; WMA was found to have the highest environmental and socio-economic impacts compared to other pavement types. Material extractions and processing phase had the highest contribution to all environmental impact indicators that shows the importance of cleaner production strategies for pavement materials. Based on stochastic compromise programming results, in a balanced weighting situation, Sasobit(&)#174; WMA had the highest percentage of allocation (61%), while only socio-economic aspects matter, Asphamin(&)#174; WMA had the largest share (57%) among the WMA and HMA mixtures. The optimization results also supported the significance of an increased WMA use in the United States for sustainable pavement construction. Consequently, the outcomes of this dissertation will advance the state of the art in built environment sustainability research by investigating novel efficient methodologies capable of offering optimized policy recommendations by taking the TBL impacts of supply chain into account. It is expected that the results of this research would facilitate better sustainability decisions in the adoption of system-based TBL thinking in the construction field.
Show less - Date Issued
- 2013
- Identifier
- CFE0005018, ucf:50007
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005018
- Title
- Developing a Group Decision Support System (GDSS) for decision making under uncertainty.
- Creator
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Mokhtari, Soroush, Abdel-Aty, Mohamed, Madani Larijani, Kaveh, Wang, Dingbao, Xanthopoulos, Petros, University of Central Florida
- Abstract / Description
-
Multi-Criteria Decision Making (MCDM) problems are often associated with tradeoffs between performances of the available alternative solutions under decision making criteria. These problems become more complex when performances are associated with uncertainty. This study proposes a stochastic MCDM procedure that can handle uncertainty in MCDM problems. The proposed method coverts a stochastic MCDM problem into many deterministic ones through a Monte-Carlo (MC) selection. Each deterministic...
Show moreMulti-Criteria Decision Making (MCDM) problems are often associated with tradeoffs between performances of the available alternative solutions under decision making criteria. These problems become more complex when performances are associated with uncertainty. This study proposes a stochastic MCDM procedure that can handle uncertainty in MCDM problems. The proposed method coverts a stochastic MCDM problem into many deterministic ones through a Monte-Carlo (MC) selection. Each deterministic problem is then solved using a range of MCDM methods and the ranking order of the alternatives is established for each deterministic MCDM. The final ranking of the alternatives can be determined based on winning probabilities and ranking distribution of the alternatives. Ranking probability distributions can help the decision-maker understand the risk associated with the overall ranking of the options. Therefore, the final selection of the best alternative can be affected by the risk tolerance of the decision-makers. A Group Decision Support System (GDSS) is developed here with a user-friendly interface to facilitate the application of the proposed MC-MCDM approach in real-world multi-participant decision making for an average user. The GDSS uses a range of decision making methods to increase the robustness of the decision analysis outputs and to help understand the sensitivity of the results to level of cooperation among the decision-makers. The decision analysis methods included in the GDSS are: 1) conventional MCDM methods (Maximin, Lexicographic, TOPSIS, SAW and Dominance), appropriate when there is a high cooperation level among the decision-makers; 2) social choice rules or voting methods (Condorcet Choice, Borda scoring, Plurality, Anti-Plurality, Median Voting, Hare System of voting, Majoritarian Compromise ,and Condorcet Practical), appropriate for cases with medium cooperation level among the decision-makers; and 3) Fallback Bargaining methods (Unanimity, Q-Approval and Fallback Bargaining with Impasse), appropriate for cases with non-cooperative decision-makers. To underline the utility of the proposed method and the developed GDSS in providing valuable insights into real-world hydro-environmental group decision making, the GDSS is applied to a benchmark example, namely the California's Sacramento-San Joaquin Delta decision making problem. The implications of GDSS' outputs (winning probabilities and ranking distributions) are discussed. Findings are compared with those of previous studies, which used other methods to solve this problem, to highlight the sensitivity of the results to the choice of decision analysis methods and/or different cooperation levels among the decision-makers.
Show less - Date Issued
- 2013
- Identifier
- CFE0004723, ucf:49821
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004723
- Title
- Middle Grades Science in Florida: A Comparison of Student Achievement in Comprehensive and Subject-specific Science Courses 2013-2017.
- Creator
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Moore, Kenneth, Taylor, Rosemarye, Baldwin, Lee, Storey, Valerie A., Gao, Su, University of Central Florida
- Abstract / Description
-
As with U.S. student achievement on national and international science assessments, Florida's 8th grade student achievement on the 2013(-)2017 8th grade Florida Comprehensive Assessment Test (FCAT) 2.0 Science/Statewide Science Assessment (SSA) was stagnant. To break this stagnation, many Florida school districts have changed middle grades science course offerings from traditional, subject-specific, discipline-based, layered, or field-specific science courses to comprehensive, integrated,...
Show moreAs with U.S. student achievement on national and international science assessments, Florida's 8th grade student achievement on the 2013(-)2017 8th grade Florida Comprehensive Assessment Test (FCAT) 2.0 Science/Statewide Science Assessment (SSA) was stagnant. To break this stagnation, many Florida school districts have changed middle grades science course offerings from traditional, subject-specific, discipline-based, layered, or field-specific science courses to comprehensive, integrated, spiraled, interdisciplinary, multidisciplinary, thematic, or general science courses. There was a lack of research showing if either type of science course improved student achievement on standardized science assessments. Controlling for school district student population, low socio-economic status (SES) student percentage, and English learner (EL) percentage, this study compared the 2013(-)2017 8th grade FCAT 2.0 Science/SSA school district mean scale scores of two groups of school districts: those that offered comprehensive science courses and those that offered subject-specific science courses. Scores for three student groups were analyzed: all students, low SES students, and ELs. No statistically significant differences were found in school district mean scale scores or pass rates between the two school district groups. The comprehensive group mean scale scores were numerically higher, while the subject-specific group mean pass rates were numerically higher. The subject-specific group had statistically significantly higher raw scores for life science and physical science. The comprehensive group had wider dispersions of mean scale scores and pass rates, suggesting inconsistencies in implementation of comprehensive science courses. The primary implication of this study is that educational leaders should not expect to improve student science achievement simply by changing the type of science course offering. Changes should be made with consideration to student needs, school district demographics, teacher professional development and support, course structure and coherence with standards, and the need for flexibility in teacher assignments.
Show less - Date Issued
- 2018
- Identifier
- CFE0007410, ucf:52710
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007410
- Title
- THE EFFECTS OF THE ATTAINMENT OF FUNCTIONAL ASSESSMENT SKILLS BY PRESCHOOL TEACHERS AND THEIR ASSISTANTS ON STUDENTS' CLASSROOM BEHAVIOR.
- Creator
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Wagner, Karen, Cross, Lee, University of Central Florida
- Abstract / Description
-
The purpose of this study was to examine the effects of teaching functional assessment skills to three Prekindergarten teachers and their teaching assistants. The effects were measured by examining the behavior of the teachers and assistants, as well as the behaviors of the students; before, during and after the delivery of three, two-hour functional assessment classes. The teaching staff videotaped themselves and their students during a regular class time, predetermined by the researcher and...
Show moreThe purpose of this study was to examine the effects of teaching functional assessment skills to three Prekindergarten teachers and their teaching assistants. The effects were measured by examining the behavior of the teachers and assistants, as well as the behaviors of the students; before, during and after the delivery of three, two-hour functional assessment classes. The teaching staff videotaped themselves and their students during a regular class time, predetermined by the researcher and each teacher prior to the onset of baseline data collection, over an approximate nine-week period. The video was taken in twelve-minute segments every day. Later, the video was coded for specific behaviors. Although there were gains in appropriate intervention strategies from teachers and assistants during the intervention phase, the interventions generally peaked a week or two after the classes ended and gradually declined. Teacher skills were retained however, as most ratios of appropriate interventions maintained at higher rates than baseline. Relationships between student behavior and correct teacher interventions were established and maintained. The intervention resulted in changes in staff behavior, but results did not sustain at high levels over time. The realization that escape maintained some student behavior, and teaching skills to "test" for function, were likely the most important concepts for many of the participants. Further research should include adding a behavior coach to assist in shaping the teaching staffs' emerging skills and to provide a sounding board when developing specific student interventions.
Show less - Date Issued
- 2008
- Identifier
- CFE0002088, ucf:47575
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002088
- Title
- MUSIC STANDARDS IMPLEMENTATION AND THE RELATIONSHIP TO FOURTH GRADE FLORIDA COMPREHENSIVE ASSESSMENT TEST SCORES FROM 2004 TO 2006.
- Creator
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Phillips, Neal, Taylor, Rosemarye, University of Central Florida
- Abstract / Description
-
This study examined the possible relationships among the perceived implementation levels of elementary music standards and Florida Comprehensive Assessment Test (FCAT) scores for fourth graders in reading, mathematics, and writing for the years 2004, 2005, and 2006. Survey data for the study were obtained from 32 school district music supervisors from large, medium, and small districts who returned fully or partially completed questionnaires. The study was focused on the relationships, if any...
Show moreThis study examined the possible relationships among the perceived implementation levels of elementary music standards and Florida Comprehensive Assessment Test (FCAT) scores for fourth graders in reading, mathematics, and writing for the years 2004, 2005, and 2006. Survey data for the study were obtained from 32 school district music supervisors from large, medium, and small districts who returned fully or partially completed questionnaires. The study was focused on the relationships, if any, between a school district's mean scale scores in reading, mathematics, and writing from 2004 to 2006 in grade 4 and (a) elementary music standards implementation, (b) the average amount of time spent in elementary school music classes per week, (c) demographic and economic factors, and (d) the reported average amount of time spent in elementary school music classes per week. Findings of the study indicated that, when all variables were considered, a relationship existed among district music supervisors' views on two variables, degree of music standards implementation and the amount of time allotted per month for elementary music in respondents' school districts in 2004, 2005, and 2006; and (a) the percentage of students achieving at proficient or higher on FCAT reading who were also identified as free and reduced lunch in 2004, 2005, and 2006, (b) the percentage of students achieving at proficient or higher on FCAT mathematics who were also identified as free and reduced lunch in 2004, 2005, and 2006, and (c) the percentage of students achieving at proficient or higher on FCAT writing who were also identified as Hispanic in 2004, 2005, and 2006. Finally, implications for educational decision making were offered and recommendations were made for future studies dealing with elementary music standards implementation in Florida's schools. These recommendations included (a) investigating reasons for achievement gaps on FCAT between majority and minority ethnic groups and between minorities themselves, (b) exploring socio-economic factors affecting FCAT scores, (c) continuing research giving special attention to brain research involving music and its impact on the brain, (d) determining why high-stakes testing is necessary, and (e) devising controlled studies both in Florida and nationwide that would compare the elementary students receiving consistent and varied teaching in music with those students not receiving consistent musical instruction. Controlled and experimental group studies of pre-schoolers should be conducted to determine the extent to which the use of musical rhythms impacts the rate of language acquisition.
Show less - Date Issued
- 2008
- Identifier
- CFE0002063, ucf:47566
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002063
- Title
- STRUCTURAL CONDITION ASSESSMENT OF PRESTRESSED CONCRETE TRANSIT GUIDEWAYS.
- Creator
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Shmerling, Robert, Catbas, F. Necati, University of Central Florida
- Abstract / Description
-
Objective condition assessment is essential to make better decisions for safety and serviceability of existing civil infrastructure systems. This study explores the condition of an existing transit guideway system that has been in service for thirty-five years. The structural system is composed of six-span continuous prestressed concrete bridge segments. The overall transit system incorporates a number of continuous bridges which share common design details, geometries, and loading conditions...
Show moreObjective condition assessment is essential to make better decisions for safety and serviceability of existing civil infrastructure systems. This study explores the condition of an existing transit guideway system that has been in service for thirty-five years. The structural system is composed of six-span continuous prestressed concrete bridge segments. The overall transit system incorporates a number of continuous bridges which share common design details, geometries, and loading conditions. The original analysis is based on certain simplifying assumptions such as rigid behavior over supports and simplified tendon/concrete/steel plate interaction. The current objective is to conduct a representative study for a more accurate understanding of the structural system and its behavior. The scope of the study is to generate finite element models (FEMs) to be used in static and dynamic parameter sensitivity studies, as well load rating and reliability analysis of the structure. The FEMs are used for eigenvalue analysis and simulations. Parameter sensitivity studies consider the effect of changing critical parameters, including material properties, prestress loss, and boundary and continuity conditions, on the static and dynamic structural response. Load ratings are developed using an American Association for State Highway Transportation Officials Load and Resistance Factor Rating (AASHTO LRFR) approach. The reliability of the structural system is evaluated based on the data obtained from various finite element models. Recommendations for experimental validation of the FEM are presented. This study is expected to provide information to make better decisions for operations, maintenance and safety requirements; to be a benchmark for future studies, to establish a procedure and methodology for structural condition assessment, and to contribute to the general research body of knowledge in condition assessment and structural health monitoring.
Show less - Date Issued
- 2005
- Identifier
- CFE0000658, ucf:46520
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000658
- Title
- THE ASSOCIATION BETWEEN MATERNAL RESILIENCY, PERCEPTIONS OF TOUCH, AND REPORTS OF INFANT TOUCH.
- Creator
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D'Agostino, Lisa, Waldrop, Julee, University of Central Florida
- Abstract / Description
-
The purpose of this research study is to measure how mothers perceive and use touch with their infants, and its association with maternal resiliency, a measure of coping ability. This is important because the inability to cope causes increased stress, which increases negative perceptions of life events, making it even more difficult to cope. In addition, research has yet to uncover whether or not resiliency is increased in mothers by the same touch and interactions that has been proven to...
Show moreThe purpose of this research study is to measure how mothers perceive and use touch with their infants, and its association with maternal resiliency, a measure of coping ability. This is important because the inability to cope causes increased stress, which increases negative perceptions of life events, making it even more difficult to cope. In addition, research has yet to uncover whether or not resiliency is increased in mothers by the same touch and interactions that has been proven to enhance development, attachment, and resiliency in infants. This study involved asking participants (mothers of infants <1 year of age) to complete demographic information and a survey composed of three questionnaires: the Mother-Infant Touch Survey, the Physical Contact Assessment, and the Resilience Scale. Although there were no statistically significant correlations between reported perceptions of touch, mother-infant touch and maternal resiliency, there were a couple of other findings that warrant further investigation. Hispanic mothers scored higher on the Resiliency Scale (RS-14) than Non-Hispanic mothers, and a linear trend was detected between mothers in the < 25 years of age group and higher scores on the RS-14. These findings may influence future research on the correlations between mother-infant touch and maternal coping ability.
Show less - Date Issued
- 2013
- Identifier
- CFH0004329, ucf:45032
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004329
- Title
- Systems Analysis for Urban Water Infrastructure Expansion with Global Change Impact under Uncertainties.
- Creator
-
Qi, Cheng, Chang, Ni-bin, Geiger, Christopher, Xanthopoulos, Petros, Wanielista, Martin, University of Central Florida
- Abstract / Description
-
Over the past decades, cost-effectiveness principle or cost-benefit analysis has been employed oftentimes as a typical assessment tool for the expansion of drinking water utility. With changing public awareness of the inherent linkages between climate change, population growth and economic development, the addition of global change impact in the assessment regime has altered the landscape of traditional evaluation matrix. Nowadays, urban drinking water infrastructure requires careful long...
Show moreOver the past decades, cost-effectiveness principle or cost-benefit analysis has been employed oftentimes as a typical assessment tool for the expansion of drinking water utility. With changing public awareness of the inherent linkages between climate change, population growth and economic development, the addition of global change impact in the assessment regime has altered the landscape of traditional evaluation matrix. Nowadays, urban drinking water infrastructure requires careful long-term expansion planning to reduce the risk from global change impact with respect to greenhouse gas (GHG) emissions, economic boom and recession, as well as water demand variation associated with population growth and migration. Meanwhile, accurate prediction of municipal water demand is critically important to water utility in a fast growing urban region for the purpose of drinking water system planning, design and water utility asset management. A system analysis under global change impact due to the population dynamics, water resources conservation, and environmental management policies should be carried out to search for sustainable solutions temporally and spatially with different scales under uncertainties. This study is aimed to develop an innovative, interdisciplinary, and insightful modeling framework to deal with global change issues as a whole based on a real-world drinking water infrastructure system expansion program in Manatee County, Florida. Four intertwined components within the drinking water infrastructure system planning were investigated and integrated, which consists of water demand analysis, GHG emission potential, system optimization for infrastructure expansion, and nested minimax-regret (NMMR) decision analysis under uncertainties. In the water demand analysis, a new system dynamics model was developed to reflect the intrinsic relationship between water demand and changing socioeconomic environment. This system dynamics model is based on a coupled modeling structure that takes the interactions among economic and social dimensions into account offering a satisfactory platform. In the evaluation of GHG emission potential, a life cycle assessment (LCA) is conducted to estimate the carbon footprint for all expansion alternatives for water supply. The result of this LCA study provides an extra dimension for decision makers to extract more effective adaptation strategies. Both water demand forecasting and GHG emission potential were deemed as the input information for system optimization when all alternatives are taken into account simultaneously. In the system optimization for infrastructure expansion, a multiobjective optimization model was formulated for providing the multitemporal optimal facility expansion strategies. With the aid of a multi-stage planning methodology over the partitioned time horizon, such a systems analysis has resulted in a full-scale screening and sequencing with respect to multiple competing objectives across a suite of management strategies. In the decision analysis under uncertainty, such a system optimization model was further developed as a unique NMMR programming model due to the uncertainties imposed by the real-world problem. The proposed NMMR algorithm was successfully applied for solving the real-world problem with a limited scale for the purpose of demonstration.
Show less - Date Issued
- 2012
- Identifier
- CFE0004425, ucf:49354
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004425
- Title
- THE RELATIONSHIP BETWEEN THINKING MAPSî AND FLORIDA COMPREHENSIVE ASSESSMENT TESTî READING AND MATHEMATICS SCORES IN TWO URBAN MIDDLE SCHOOLS.
- Creator
-
Diaz, Anna, Martin, Suzanne, University of Central Florida
- Abstract / Description
-
The purpose of this study was to determine what difference, if any, exists between the implementation and use of Thinking Mapsî and studentsÃÂ' academic achievement in Reading and Mathematics as measured over time by the Florida Comprehensive Assessment Testî (FCAT). Thinking Mapsî is a registered trademark of Thinking Maps, Inc. The data were examined after three years of Thinking MapsÃ&...
Show moreThe purpose of this study was to determine what difference, if any, exists between the implementation and use of Thinking Mapsî and studentsÃÂ' academic achievement in Reading and Mathematics as measured over time by the Florida Comprehensive Assessment Testî (FCAT). Thinking Mapsî is a registered trademark of Thinking Maps, Inc. The data were examined after three years of Thinking Mapsî implementation and instruction. The design of this study was quantitative, with a nonrandomized control group, pretest-posttest design (Ary, Jacobs, & Razavieh, 2002) that examined the effects on student Reading and Mathematics FCAT scores in one middle school that implemented Thinking Mapsî throughout all grade levels and core subjects for three years as compared to student Reading and Mathematics FCAT scores in a second middle school that did not implement the Thinking Mapsî program throughout all grade levels and core subjects for three years. MANOVA and Chi-square tests were used to examine student FCAT scores. This study focused on one major question: Do students who have been instructed in the use of Thinking Mapsî have higher academic achievement as measured by the Florida Comprehensive Assessment Testî (FCAT) than those that have not been instructed in the use of Thinking Mapsî? Results of this study indicated that students who have been instructed in the use of Thinking Mapsî do not have higher academic achievement as measured by the Florida Comprehensive Assessment Testî (FCAT) than those who have not been instructed in the use of Thinking Mapsî. The researcher concluded that other methods of evaluating the implementation of Thinking Mapsî and student achievement should be explored.
Show less - Date Issued
- 2010
- Identifier
- CFE0003319, ucf:48448
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003319
- Title
- Analysis of the Effects of Formative Assessment in Promoting Transfer of Learning in an Undergraduate General Microbiology Laboratory Course.
- Creator
-
Rediske, Andrea, Butler, Malcolm, Boote, David, Sivo, Stephen, Chini, Jacquelyn, Moore, Sean, University of Central Florida
- Abstract / Description
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The undergraduate microbiology lab serves an important role in establishing a foundation of best practices in aseptic technique and infection control for pre-medical, pre-nursing, pre-pharmacy, or pre-allied health students. The high incidence of hospital-acquired infections (HAIs) in the US and evidence in the literature of less effective implementation of proper aseptic technique among apprentice doctors and nursing students suggests that more effective transfer of learning could improve...
Show moreThe undergraduate microbiology lab serves an important role in establishing a foundation of best practices in aseptic technique and infection control for pre-medical, pre-nursing, pre-pharmacy, or pre-allied health students. The high incidence of hospital-acquired infections (HAIs) in the US and evidence in the literature of less effective implementation of proper aseptic technique among apprentice doctors and nursing students suggests that more effective transfer of learning could improve implementation of these procedures in the clinical setting. The research described in this study aimed to assess learning transfer as it applied to aseptic techniques and infection control skills learned in the undergraduate microbiology lab from pre- and post-lab formative assessments to midterm and lab practical summative assessments. Assisting students in building connections between the aseptic techniques learned in general microbiology and their application in the clinical setting through pre-lab formative assessments and reflective practices may lead to improvements in use of aseptic techniques and infection control measures as they progress into clinical careers and may ultimately reduce infection rates and mortality rates due to HAIs.The first major aim of this study was to explore the experiences of students with respect to learning transfer through qualitative analysis of student responses to post-lab free-response questions regarding difficulties faced in the lab and the relevance of microbiology to students' future careers. The second major aim of this study was to determine if the implementation of an in-class pre-lab formative assessment facilitateslearning transfer as evidenced by significant improvements on summative lab midterm and final lab practical exam scores.Qualitative analysis of student responses to open-ended reflection questions indicated evidence of predominantly low-road transfer with respect to transfer of automaticity. Additionally, qualitative analysis of student responses indicated evidence of lateral transfer regarding transfer of complexity. Finally, there was evidence of an evolution from near to far transfer of context indicating that students were able to perceive the application of the knowledge gained in the microbiology lab in contexts similar to the lab as well as contexts outside of the lab. Evidence from student responses suggested that primarily students intending to pursue careers in healthcare fields were able to perceive specific applications of the microbiology lab to their future careers. Further, evidence from student responses suggested that students predominantly had difficulties with procedures, interpretation of results, manual dexterity with microbiological equipment and materials, and expressed the need to practice these procedures and techniques.Statistical analyses provided quantifiable evidence that the implementation of pre-lab quizzes had both a statistically significantly positive impact and a practically positive impact on lab practical final scores in both of the semesters studied as compared to historical control groups with a large effect size. The statistically and practically significant impact of the pre-lab quizzes on lab practical final exams is an important finding and will add to the current literature on the importance of formative assessment in undergraduate microbiology education.
Show less - Date Issued
- 2017
- Identifier
- CFE0006784, ucf:51824
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006784
- Title
- Secondary and Postsecondary Calculus Instructors' Expectations of Student Knowledge of Functions: A Multiple-case Study.
- Creator
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Avila, Cheryl, Ortiz, Enrique, Dixon, Juli, Hynes, Michael, Andreasen, Janet, Mohapatra, Ram, University of Central Florida
- Abstract / Description
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This multiple-case study examines the explicit and implicit assumptions of six veteran calculus instructors from three types of educational institutions, comparing and contrasting their views on the iteration of conceptual understanding and procedural fluency of pre-calculus topics. There were three components to the research data recording process. The first component was a written survey, the second component was a (")think-aloud(") activity of the instructors analyzing the results of a...
Show moreThis multiple-case study examines the explicit and implicit assumptions of six veteran calculus instructors from three types of educational institutions, comparing and contrasting their views on the iteration of conceptual understanding and procedural fluency of pre-calculus topics. There were three components to the research data recording process. The first component was a written survey, the second component was a (")think-aloud(") activity of the instructors analyzing the results of a function diagnostic instrument administered to a calculus class, and for the third component, the instructors responded to two quotations. As a result of this activity, themes were found between and among instructors at the three types of educational institutions related to their expectations of their incoming students' prior knowledge of pre-calculus topics related to functions. Differences between instructors of the three types of educational institutions included two identifiable areas: (1) the teachers' expectations of their incoming students and (2) the methods for planning instruction. In spite of these differences, the veteran instructors were in agreement with other studies' findings that an iterative approach to conceptual understanding and procedural fluency are necessary for student understanding of pre-calculus concepts.
Show less - Date Issued
- 2013
- Identifier
- CFE0004809, ucf:49758
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004809
- Title
- Uncertainty treatment in performance based seismic assessment of typical bridge classes in United States.
- Creator
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Mehdizadeh Nasrabadi, Mohammad, Mackie, Kevin, Catbas, Necati, Yun, Hae-Bum, Xanthopoulos, Petros, University of Central Florida
- Abstract / Description
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Bridge networks are expensive and complex infrastructures and are essential components of today's transportation systems. Despite the advancement in computer aided modeling and increasing the computational power which is increasing the accessibility for developing the fragility curves of bridges, the complexity of the problem and uncertainties involved in fragility analysis of the bridge structures in addition to difficulties in validating the results obtained from the analysis requires...
Show moreBridge networks are expensive and complex infrastructures and are essential components of today's transportation systems. Despite the advancement in computer aided modeling and increasing the computational power which is increasing the accessibility for developing the fragility curves of bridges, the complexity of the problem and uncertainties involved in fragility analysis of the bridge structures in addition to difficulties in validating the results obtained from the analysis requires precaution in utilization of the results as a decision making tool. The main focus of this research is to address, study and treatment of uncertainties incorporated in various steps of performance based assessments (PBA) of the bridge structures. In this research the uncertainties is divided into three main categories. First, the uncertainties that come from ground motions time and frequency content alteration because of scarcity of the recorded ground motions in the database. Second, uncertainties associated in the modeling and simulation procedure of PBA, and third uncertainties originated from simplistic approach and methods utilized in the conventional procedure of PBA of the structures. Legitimacy of the scaling of ground motions is studied using the response of several simple nonlinear systems to amplitude scaled ground motions suites. Bias in the response obtained compared to unscaled records for both as recorded and synthetic ground motions.Results from this section of the research show the amount of the bias is considerable and can significantly affect the outcome of PBA. The origin of the bias is investigated and consequently a new metric is proposed to predict the bias induced by ground motion scaling without nonlinear analysis. Results demonstrate that utilizing the predictor as a scaling parameter can significantly reduce the bias for various nonlinear structures. Therefore utilizing the new metric as the intensity measuring parameter of the ground motions is recommended in PBA. To address the uncertainties associated in the modeling and simulation, MSSS concrete girder bridge class were selected due to the frequency of the construction in USCS region and lack of seismic detailing. A large scale parameters screening study is performed using Placket-Burman experimental design that considers a more complete group of parameters to decrease the computational expense of probabilistic study of the structure's seismic response. Fragility analysis for MSSS bridge is performed and the effect of removing the lesser important parameters the probabilistic demand model was investigated. This study reveals parameters reduction based on screening study techniques can be utilized to increase efficiency in fragility analysis procedure without compromising the accuracy of the outcome. The results from this study also provides more direct information on parameter reduction for PBA as well as provide insight into where future investments into higher fidelity finite element and constitutive models should be targeted. Conventional simplistic PBA approach does not account for the fundamental correlation between demand and capacity models. A more comprehensive PBA approach is presented and fragility analysis is performed with implementation of a new formulation in the component fragility analysis for MSSS bridge class and the outcome is compared with the one from conventional procedure. The results shows the correlation between demand and capacity affects the outcome of PBA and the fragility functions variation is not negligible. Therefore using the presented approach is necessary when accuracy is needed.
Show less - Date Issued
- 2014
- Identifier
- CFE0005531, ucf:50309
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005531
- Title
- Investigating the universality and comprehensive ability of measures to assess the state of workload.
- Creator
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Abich, Julian, Reinerman, Lauren, Lackey, Stephanie, Szalma, James, Taylor, Grant, University of Central Florida
- Abstract / Description
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Measures of workload have been developed on the basis of the various definitions, some are designed to capture the multi-dimensional aspects of a unitary resource pool (Kahneman, 1973) while others are developed on the basis of multiple resource theory (Wickens, 2002). Although many theory based workload measures exist, others have often been constructed to serve the purpose of specific experimental tasks. As a result, it is likely that not every workload measure is reliable and valid for all...
Show moreMeasures of workload have been developed on the basis of the various definitions, some are designed to capture the multi-dimensional aspects of a unitary resource pool (Kahneman, 1973) while others are developed on the basis of multiple resource theory (Wickens, 2002). Although many theory based workload measures exist, others have often been constructed to serve the purpose of specific experimental tasks. As a result, it is likely that not every workload measure is reliable and valid for all tasks, much less each domain. To date, no single measure, systematically tested across experimental tasks, domains, and other measures is considered a universal measure of workload. Most researchers would argue that multiple measures from various categories should be applied to a given task to comprehensively assess workload. The goal for Study 1 to establish task load manipulations for two theoretically different tasks that induce distinct levels of workload assessed by both subjective and performance measures was successful. The results of the subjective responses support standardization and validation of the tasks and demands of that task for investigating workload. After investigating the use of subjective and objective measures of workload to identify a universal and comprehensive measure or set of measures, based on Study 2, it can only be concluded that not one or a set of measures exists. Arguably, it is not to say that one will never be conceived and developed, but at this time, one does not reside in the psychometric catalog. Instead, it appears that a more suitable approach is to customize a set of workload measures based on the task. The novel approach of assessing the sensitivity and comprehensive ability of conjointly utilizing subjective, performance, and physiological workload measures for theoretically different tasks within the same domain contributes to the theory by laying the foundation for improving methodology for researching workload. The applicable contribution of this project is a stepping-stone towards developing complex profiles of workload for use in closed-loop systems, such as human-robot team interaction. Identifying the best combination of workload measures enables human factors practitioners, trainers, and task designers to improve methodology and evaluation of system designs, training requirements, and personnel selection.
Show less - Date Issued
- 2013
- Identifier
- CFE0005119, ucf:50675
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005119
- Title
- A Psychophysical Approach to Standardizing Texture Compression for Virtual Environments.
- Creator
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Flynn, Jeremy, Szalma, James, Fidopiastis, Cali, Jentsch, Florian, Shah, Mubarak, University of Central Florida
- Abstract / Description
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Image compression is a technique to reduce overall data size, but its effects on human perception have not been clearly established. The purpose of this effort was to determine the most effective psychophysical method for subjective image quality assessment, and to apply those findings to an objective algorithm. This algorithm was used to identify the minimum level of texture compression noticeable to the human, in order to determine whether compression-induced texture distortion impacted...
Show moreImage compression is a technique to reduce overall data size, but its effects on human perception have not been clearly established. The purpose of this effort was to determine the most effective psychophysical method for subjective image quality assessment, and to apply those findings to an objective algorithm. This algorithm was used to identify the minimum level of texture compression noticeable to the human, in order to determine whether compression-induced texture distortion impacted game-play outcomes. Four experiments tested several hypotheses. The first hypothesis evaluated which of three magnitude estimation (ME) methods (absolute ME, absolute ME plus, or ME with a standard) for image quality assessment was the most reliable. The just noticeable difference (JND) point for textures compression against the Feature Similarity Index for color was determined The second hypothesis tested whether human participants perceived the same amount of distortion differently when textures were presented in three ways: when textures were displayed as flat images; when textures were wrapped around a model; and when textures were wrapped around models and in a virtual environment. The last set of hypotheses examined whether compression affected both subjective (immersion, technology acceptance, usability) and objective (performance) gameplay outcomes. The results were: the absolute magnitude estimation method was the most reliable; no difference was observed in the JND threshold between flat textures and textures placed on models, but textured embedded within the virtual environment were more noticeable than in the other two presentation formats. There were no differences in subjective gameplay outcomes when textures were compressed to below the JND thresholds; and those who played a game with uncompressed textures performed better on in-game tasks than those with the textures compressed, but only on the first in-game day. Practitioners and researchers can use these findings to guide their approaches to texture compression and experimental design.
Show less - Date Issued
- 2018
- Identifier
- CFE0007178, ucf:52250
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007178
- Title
- The Relationship Between Reading Coaches' Utilization of Data Technology and Teacher Development.
- Creator
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Behrens, Cherie, Blair, Timothy, Taylor, Rosemarye, Kelley, Michelle, Cartwright, Vickie, Flanigan, Jacquelyn, University of Central Florida
- Abstract / Description
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The use of technology in assisting educators to use student data in well-devised ways to enhance the instruction received by students is gaining headway and the support of federal dollars across the nation. Since research has not provided insight as to whether or not reading coaches are using data technology tools with teachers, this mixed methods study sought to examine what behavioral intentions reading coaches have in using data technology tools with teachers, what variables may influence...
Show moreThe use of technology in assisting educators to use student data in well-devised ways to enhance the instruction received by students is gaining headway and the support of federal dollars across the nation. Since research has not provided insight as to whether or not reading coaches are using data technology tools with teachers, this mixed methods study sought to examine what behavioral intentions reading coaches have in using data technology tools with teachers, what variables may influence their behavioral intentions, and what trends may emerge in their views about using technology data tools with teachers. A mixed methods approach was deployed via a survey embedded in an email, and data from 61 Florida reading coaches from elementary, middle, and high schools in a large urban school district were examined using an adaptation of the Technology Acceptance Model (TAM). The results showed that collectively all reading coaches have a high level of behavioral intentions towards using a data technology tool with teachers. The study also showed that elementary, middle, and high school reading coaches vary in their degree of behavioral intentions in using a data technology tool based on different variables. Trends in data showed that reading coaches think data technology tools are helpful, but that trainings are needed and that technology tools should be user-friendly. Discussion is provided regarding the implications of the study results for all stakeholders.
Show less - Date Issued
- 2012
- Identifier
- CFE0004357, ucf:49425
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004357
- Title
- Jail Mental Health Innovations: Factors Influencing Mental Health Services Innovations for Jails.
- Creator
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Clayton, Orville, Wan, Thomas, Anderson, Kim, Winton, Mark, Zhang, Ning, University of Central Florida
- Abstract / Description
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ABSTRACTThe U.S. is recognized for uniquely high incarceration rates. Over recent decades, there has been a concurrent dramatic increase of jail detainees with mental disorders. Provision of adequate mental health services for jail inmates is constitutionally mandated, and has legal, ethical, quality of care, and fiscal implications for jails, families, communities, and detainees. Significant variation exists in the provision of mental health services across jails, and increased understanding...
Show moreABSTRACTThe U.S. is recognized for uniquely high incarceration rates. Over recent decades, there has been a concurrent dramatic increase of jail detainees with mental disorders. Provision of adequate mental health services for jail inmates is constitutionally mandated, and has legal, ethical, quality of care, and fiscal implications for jails, families, communities, and detainees. Significant variation exists in the provision of mental health services across jails, and increased understanding of the factors that influence the adoption of such services may help guide jails to implement beneficial services, and ensure that such services reflect, reflect quality standards. This study used a mixed methods strategy to examine the influence of theoretically determined variables on the adoption of jail mental health services, and the quality assessment of such services. Data was gathered by survey instrumentation, secondary data review, and in-depth interviews with jail leaders. The study found that isomorphism has a significant effect on the structural adequacy of jail mental health services, innovation characteristics have a negligible relationship to structural adequacy and process integrity, structural adequacy mediates the effects of isomorphism on process integrity, and jail size has a significant effect on structural adequacy. This study advances the knowledge base in its specification of the roles of internal, external, and demographic factors in the adoption of jail mental health services, and in the testing and application of Donabedian's healthcare model to assess the quality of such services.
Show less - Date Issued
- 2017
- Identifier
- CFE0006866, ucf:51755
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006866
- Title
- A COMPARISON OF EIGHTH GRADE READING SCORES BY STATEAND BY THE FOUR CENSUS-DEFINED REGIONS IDENTIFIED BY NAEP.
- Creator
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Gordon II, William, Taylor, Rosemarye, University of Central Florida
- Abstract / Description
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This study provided information for policymakers and practitioners by comparing performance of eighth grade students in 2007 on state standardized reading assessments and by the four census-defined regions identified by NAEP. NCLB required states to set their own performance standards and to create their own data collection instruments resulting in increased transparency of student performance data and a lack of uniform accountability systems. The inability of educators, policy-makers, and...
Show moreThis study provided information for policymakers and practitioners by comparing performance of eighth grade students in 2007 on state standardized reading assessments and by the four census-defined regions identified by NAEP. NCLB required states to set their own performance standards and to create their own data collection instruments resulting in increased transparency of student performance data and a lack of uniform accountability systems. The inability of educators, policy-makers, and the general public to make state-by-state comparisons in the area of reading was the catalyst for the study. NAEP data were collected from NCES and state performance data were collected from the USDOE SY 2006-2007 CSPR to determine if a relationship existed between eighth grade students' state scores and NAEP scores in the four census-defined regions. Data were further disaggregated by low socioeconomic students and by nonwhite students. A regression analysis was statistically significant in predicting: a) the state proficient and above scores from the NAEP proficient and above scores, b) the low socioeconomic state proficient and above scores from the NAEP proficient and above scores in the West census-defined region, and c) the nonwhite state proficient and above scores from the NAEP proficient and above scores in all regions. A regression analysis was not statistically significant in predicting low socioeconomic state proficient and above scores from the low socioeconomic NAEP proficient and above scores in the Midwest, South and Northeast regions.
Show less - Date Issued
- 2009
- Identifier
- CFE0002536, ucf:52846
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002536