Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 474 for “"Effect Size"”.
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Rational Effect Size Measurement
We often want to achieve our goals as effectively as possible. But what are the most effective interventions to achieve our goals? Here, we often turn to science for advice. And, scientists across various fields – from social science to medicine – measure how effective tested interventions are, …
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Guidelines for the interpretation of NCDIF as an effect size measure
… item functioning (NCDIF) parameter as a DIF effect size measure. This parameter quantifies the expected (average) effect of the possible differences between item parameters on the (squared differences of the) item score for the focal population of examinees. We first investigate in which …
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Effect size estimation and robust classification for irregularly sampled functional data
… thesis, we address two key issues: measuring an effect size of variable of the interest in functional analysis of variance (fANOVA) model and the development of robust probabilistic classifier in functional response model. We especially consider irregular functional data in our study, where …
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Formulating a Dimtest-Based Effect Size Measure and a New DIMTEST Statistic and Their Applications
This dissertation proposes an interpretable effect size measure for use with DIMTEST, a widely used method for testing the hypothesis of test unidimensionality as represented by local item independence. There are six chapters in this dissertation. Chapter 1 addresses the importance of assessing …
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The development and validation of effect size measures for IRT and CFA studies of measurement equivalence
… of these criteria, it may be informative to use effect size estimates to judge the magnitude of the observed effects as well. As such, the present work proposed the development and evaluation of effect size measures for CFA and IRT studies of measurement equivalence. First, simulation research …
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A meta-analysis of the relation of trauma and somatization: an investigation of methodological factors related to effect size
… present study intended to estimate an overall effect size for the relation of trauma and somatization, to empirically describe the methods used to study the relation of trauma and somatization, and to determine if methodological differences between studies contribute to differences in estimates …
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The development of a novel composite score to characterize effect size of behavior and histopathology changes after a repetitive mild traumatic brain injury
… assessments are most useful in evaluating the effects of preclinical TBI. To investigate the relative contribution of various behavior tests in the assessment of preclinical TBI, three statistical models (simple linear regression, pairwise correlation, and factor analysis) were conducted on …
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An Analysis of the Effects That Several Design Variables Have on the Accuracy and Precision of Glass’ Delta and Hedges’ g
<p>Effect size is the standardized effect that some treatment has on a sample of a population. In particular, Hedges' <em>g </em>and Glass delta are mean difference effect size estimators that are used to compute the effect sizes found in an experimental situation. A confidence interval is an …
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A Meta-Analysis of Testing Accommodations for Students with Disabilities: Implications for High-Stakes Testing
… whether accommodated conditions provided a more effective and valid assessment of students with disabilities. Results from the meta-analysis of 34 studies (119 effect sizes) lend support to the differential boost hypotheses, whereby students with disabilities (mean effect size = 0.30, k = 62, p < …
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The Effect of Simulator Platform Motion on Pilot Training Transfer: A Meta-Analysis
… was used to generate an estimate of true mean effect size (δ) for simulator motion with regard to pilot training transfer. The analysis was based on the techniques developed by Hunter and Schmidt (1990). A d statistic was used for effect size calculations based on information available in the …
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A META-ANALYSIS OF ANTECEDENT EXERCISE ON CHILDREN’S CLASSROOM BEHAVIORS
… review the literature investigating the effects of antecedent aerobic exercise on students with emotional and behavioral disorders. Eighteen studies met inclusion criteria, which included single case design studies and group studies, participant age, and an exercise intervention. Tau U …
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Corpus callosum morphology in retinopathy-positive and retinopathy-negative Malawian children diagnosed with cerebral malaria
… analysis of covariance were conducted and effect sizes were calculated on the area measurements to determine whether overall brain area, CC area, and five segments of the CC (i.e., genu, body, midbody, isthmus, and splenium) differed as a function of retinopathy status. No significant group …
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Long term effects of video and computer game heavy use on health, mental health and education outcomes among adolescents in the U.S.
… score matching (PSM) method, adding school fixed effect and sampling weight components, was used to create two equivalent groups using different cut-off points in Wave 2 based on 29 matching variables in Wave 1. Matching variables included: demographics, personal characteristics, parenting style, …
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A quantitative examination of self-regulation, parental experience, and age of biological parents.
… Additionally, correlations showed strong effect size and have practical significance, or are meaningful in a real-world context. I then performed a simple linear regression analysis to examine whether time as a parent (i.e., parenting experience) predicted PSR levels. Results showed time …
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Analysis of the Impact of CACREP Accreditation of Counselor Education Programs on Student Knowledge Outcomes
… programs, in all fourteen variables. Sample size was large, totaling 9707, so the PI calculated effect sizes using Cohen’s d for each variable to aid interpretation of statistical significance. Five variables had large effect sizes of .70 or higher. The higher effect size statistics were …
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An exploration of mutation effect sizes in the nematode Caenorhabditis elegans
… whether the mutation rate or average mutation effect size differed between the two strains. I predicted that the mev-1 nematodes would have a higher overall estimated mutation rate due to their high oxidative stress. Since mutation rate and mutation effect size are inversely related, I …
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Are Cooking Interventions Effective at Improving Dietary Intake and Health Outcomes? A Systematic Review
… food consumption and evaluated intervention's effectiveness at improving dietary intake and physical and mental health outcomes. English and full-text research articles published through January 2021 were obtained through PubMed, CINAHL using EBSCO, Web of Science from Clarivate, Scopus and …
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The Effects of Using Multimedia Presentations and Modular Worked-out Examples as Instructional Methodologies to Manage the Cognitive Processing Associated with Information Literacy Instruction at the Graduate and Undergraduate Levels of Nursing Education
… Cognitive processing theory describes the effects an instructional subject and the learning environment have on working memory. Essential processing is one component of cognitive processing theory that explains the inherent complexity of knowledge domains such as information literacy. Prior …
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Gender Differences in Vocational Interests: A Large, National Study and Comparison to U.S. Occupations
… population (N = 1,283,110), we calculated the size of gender differences across all thirty basic interests and compare these differences to corresponding work categories. We also tested for moderators of gender differences including age, ethnicity, educational attainment, and year. Out of the …
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