A priori power was estimated for the three, multivariate repeated measures ANOVA for each dependent variable in the study. The proposed analyses will use a two tailed alpha levels set to .05. Overall power was set to .80, meaning the study will have an 80 percent probability of finding a significant difference if such differences exist in the population. Equal sample sizes are assumed. The power analysis concentrated on the multivariate group by time interaction because it usually is the least powerful element in a repeated measures ANOVA (Field, 2005 and Wickens and Keppel, 2004). A medium effect size is anticipated Cohens 1988 f = .25. In addition, a drop out rate of 20 percent is expected. Results show an overall sample size of 240 will be required, 40 subjects per group. This sample size was selected as the smallest sample that would be important to detect.