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Comparison Of Multivariate Methods For Measuring Change From Pretest To Posttest, Justin Leslie Rogers
Comparison Of Multivariate Methods For Measuring Change From Pretest To Posttest, Justin Leslie Rogers
Dissertations
Three multivariate methods for measuring change from pretest to posttest are compared with respect to statistical power over various levels and combinations of effect size, alpha level, sample size, number of dependent variables, number of significantly different dependent variables, correlation between corresponding pretest and posttest scores, and correlation between unrelated pretest and posttest scores. The method utilizing posttests as the dependent variables and pretests as covariates was found to have superior statistical power in the majority of the scenarios examined. However, there were scenarios where the method utilizing change scores as dependent variables and the method utilizing only posttests as …
Traditional And Nontraditional Preservice Elementary Teachers' Perceptions About Mathematics And Mathematics Teaching, Anna Marie Wheeler
Traditional And Nontraditional Preservice Elementary Teachers' Perceptions About Mathematics And Mathematics Teaching, Anna Marie Wheeler
Dissertations
In this qualitative dissertation, I examined six nontraditional (based on age) and six traditional preservice elementary teachers' beliefs and changes in beliefs about mathematics and mathematics teaching. These case study participants were enrolled in one of three mathematics content courses designed for preservice elementary teachers at a mid-sized doctoral granting university in the western United States. I selected the twelve participants based on the predetermined criteria of gender (female), age (less than 30 for traditional and at least 30 for nontraditional), mathematics instructor, preservice mathematics course, and group dynamics. Data collection consisted of two approximately 45-minute long interviews per preservice …