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A Comparison of Five Robust Regression Methods with Ordinary Least Squares: Relative Efficiency, Bias and Test of the Null Hypothesis

Description: A Monte Carlo simulation was used to generate data for a comparison of five robust regression estimation methods with ordinary least squares (OLS) under 36 different outlier data configurations. Two of the robust estimators, Least Absolute Value (LAV) estimation and MM estimation, are commercially available. Three authormodified variations on MM were also included (MM1, MM2, and MM3). Design parameters that were varied include sample size (n=60 and n=180), number of independent predictor variab… more
Date: August 2001
Creator: Anderson, Cynthia, 1962-
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Cross-Cultural Adaptability of Texas Dental Hygienists and Dental Hygiene Students: A Preliminary Study

Description: This causal-comparative and correlational study examined cross-cultural adaptability of randomly selected licensed dental hygienists, 1995-2005 graduates, practicing in the state of Texas and first and second-year dental hygiene students attending 5 randomly selected accredited 2 and 4-year dental hygiene schools in the state of Texas. A sample of 289 individuals: 194 enrolled students and 95 licensed dental hygienists, alumni of the 5 schools, completed the 50-item Cross-Cultural Adaptability … more
Date: August 2006
Creator: Tavoc, Tabitha
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Great Debate continued: Does daily writing in kindergarten lead to invented spelling and reading?

Description: Many children in the United States cannot read on level by fourth grade. Traditionally, teachers have delayed reading instruction until first grade. However, involving children sooner in literary activities may provide skills needed to enable them to read on grade level. The purpose for this study was to determine the extent to which daily writing in kindergarten influences the development of invented spelling and learning to read. Five teachers modeled writing with 78 kindergarten children who… more
Date: May 2003
Creator: Pierce, Laura Boehl
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Interorganizational Relationships: The Effects of Organizational Efficacy on Member Firm Performance

Description: Relationships between the collective actors within interorganizational relationships are a growing area of research in management. Interorganizational networks continue to be a popular mechanism used by organizations to achieve greater performance. Organizations develop competencies to work with other organizations, but the confidence of these organizations to use these strengths for a competitive advantage has yet to be empirically examined. The purpose of this study is to examine organizati… more
Date: August 2006
Creator: McDowell, William C.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

An Examination of the Relationships Between Affective Traits and Existential Life Positions

Description: There were two major goals of this study - to examine validity of scores for the Boholst Life Position Scale and to examine potential associations between life positions and affective traits. Two hundred seventy-seven students enrolled in undergraduate psychology classes at a large university volunteered for the study. Concurrent validity of scores for the life position scale was supported based on two compared instruments. Pearson product-moment correlations for the comparisons were -.765 and… more
Date: August 2004
Creator: Wiesner, Van
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

The Effects of a Computer-mediated Intervention on "At-risk" Preschool Students' Receptive Vocabulary and Computer Literacy Skills.

Description: This study examined the effects of a computer-mediated intervention on "at-risk" preschool students' receptive vocabulary development, computer-literacy skills, and enthusiasm for leaning. Twenty-two preschool-aged children attending an urban primary public school and participating in government subsidized school lunch program participated in the study. A pretest/posttest control-group design and case-study participant observations were used for data collection. Students were assigned to one of… more
Date: December 2003
Creator: Alman, Lourdes Fraga
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Unintended Outcomes: The Effects of an Entity's Educator Preparation Accreditation on Access to Certification for Individuals of Color

Description: The purpose of this dissertation was twofold. First, the study sought to determine if the Texas Academic Skills Program (TASP) Reading score predicts success on the Examination for the Certification of Educators in Texas (ExCET). Second, the study addressed the effect on individuals of color of raising the minimum TASP Reading score entrance requirement for admission to teacher preparation programs. Data were collected from the ExCET Office of a Carnegie I metropolitan university. The defined … more
Date: August 2001
Creator: Rozell, Diann
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Teacher Practice, Curriculum, and Children's Moral Development in Buddhist Temple Preschools in Thailand

Description: This study investigated what constitutes a moral development program in Buddhist temple preschools in Thailand. The researcher employed three qualitative methods: structured, in-depth interviews, observations of teachers' instruction, and document analysis of curriculum guides. Four Buddhist temple preschools were selected as the sites. Participants for interview included three abbots and one head nun, four principals, and twelve teachers. Participants for observations included four teachers of… more
Date: December 2001
Creator: Phisalaphong, Rathdow
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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