Volume 1, No. 1, 2015
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Acta Spartae is the undergraduate journal of sciences and mathematics at The University of Tampa, and is designed to recognize and promote the vibrant undergraduate research community at UT by providing a forum for the dissemination of research and ideas produced at the University.
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Browsing Volume 1, No. 1, 2015 by Subject "Department of Psychology"
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Item The Effects of Birth Order on Academic Success(College of Social Sciences, Mathematics and Education, The University of Tampa, 2015) Erin McNally and Erica YuenThis study examines the relationship between birth order and college GPA, high school GPA, SAT scores, anxiety level, and self-esteem. We hypothesized that eldest children would have higher college and high school GPAs, higher SAT scores, lower anxiety levels, and higher self-esteem compared to middle, youngest, and only children. The sample consisted of 127 students from General Psychology and Gateways (freshmen orientation) classes who completed a demographic survey, academic performance survey, the Rosenberg Self-Esteem Scale, and the Beck Anxiety Inventory. Results of a one-way ANOVA demonstrated a statistically significant relationship between birth order and college GPA. However, the analyses for high school GPA, SAT scores, anxiety level, and self-esteem yielded statistically insignificant results.Item High-Resolution Abundance Analysis of Stars with Small Planets Discovered by Kepler(College of Natural and Health Sciences, The University of Tampa, 2015) Drake C. Williams; Simon Schuler; Zachary A. VazUsing high-resolution, high signal-to-noise ratio Keck/HIRES spectra we have derived the parameters and abundances of 17elements of four planetary host stars discovered by Kepler: Kepler-97, Kepler-128, Kepler-131, and Kepler-411. All four stars are known to host small planets (from 0.8 to 1.8 Earth radii), and densities have been determined for planets in two of the systems. We find the metallicities of the stars to range from [Fe/H] = −0.17to [Fe/H]= +0.13 (on a scale where the Sun has a metallicity of [Fe/H]= 0.00). This suggests that small planet formation occurs over a wide range of metallicities, in contrast to large, Jupiter-size planets which have been shown to form preferentially in high-metallicity environments. In addition, our four stars are found to have elemental abundances which fall along trends defined by a large sample of stars within the disk of the Galaxy. Based on this result, small planets appear to form around stars that have compositions typical of the general Galactic population. The detailed compositions of these host stars, along with densities of small planets, will provide important constraints for models of small planet formation.