No description available.

No description available.

No description available.

No description available.

No description available.

When selecting a method for testing variance equality, a researcher should select a method which is robust to distribution non-normality and dissimilarity. The method should also possess sufficient power to ascertain departures from the equal variance hypothesis. This Monte Carlo study examined the robustness and power of five tests of variance equality under specific conditions. The tests examined included one procedure proposed by O'Brien (1978), two by O'Brien (1979), and two by Conover, Johnson, and Johnson (1981). Specific conditions included assorted combinations of the following factors: k=2 and k=3 groups, normal and non-normal distributional forms, similar and dissimilar distributional forms, and equal and unequal sample sizes. Under the k=2 group condition, a total of 180 combinations were examined. A total of 54 combinations were examined under the k=3 group condition. The Type I error rates and statistical power estimates were based upon 1000 replications in each combination examined. Results of this study suggest that when sample sizes are relatively large, all five procedures are robust to distribution non-normality and dissimilarity, as well as being sufficiently powerful.

The purpose of this research was to evaluate the effect on parametric and nonparametric tests using ordinal data when the distances between points changed on the measurement scale. The research examined the performance of Type I and Type II error rates using selected parametric and nonparametric tests.

Theoretical models posit that the perception of situations consists of two components: an objective component attributable to the situation being perceived and a subjective component attributable to the person doing the perceiving (Murray, 1938; Rauthmann, 2012; Sherman, Nave & Funder, 2013; Wagerman & Funder, 2009). In this study participants (N = 186) viewed three pictures from the Thematic Apperception Test (TAT; Murray, 1938) and rated the situations contained therein using a new measure of situations, the Riverside Situational Q-Sort (RSQ; Wagerman & Funder, 2009). The RSQ was used to calculate the overall agreement among ratings of situations and to examine the objective and subjective properties of the pictures. These results support a twocomponent theory of situation perception. Both the objective situation and the person perceiving that situation contributed to overall perception. Further, distinctive perceptions of situations were consistent across pictures and were associated with the Big Five personality traits in a theoretically meaningful manner. For instance, individuals high in Openness indicated that these pictures contained comparatively more humor (r = .26), intellectual stimuli (r = .20), and raised moral or ethical issues (r = .19) than individuals low on this trait. / Includes bibliography. / Thesis (M.A.)--Florida Atlantic University, 2013.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Typescript (photocopy). / Digitized by Kansas Correctional Industries