500-word reflection explaining what reliability and validity are and why they are important in a research study. Discuss the reliability coefficient and measure of validity used in the article you examined. Discuss why each was the most appropriate measure for the study you have reviewed. This quasi-experimental research study analyzed the outcomes assessment archival data of 58 post-primary MRI students. Cohort sampling was used to organize the study population data into pre- (n = 30) and post-intervention (n = 28) samples. The number of clinical competency repetitions was compared using a Mann-Whitney U test (z = 1.728, p = .084). At an level of .10 the difference in mean ranks of the pre-intervention and post-intervention samples was statistically significant. An independent t-test was used to compare MRI mock registry examination scores (t = .613, p = .542). At an level of .10, the difference in the mean MRI mock registry of the pre-intervention and post-intervention groups was not statistically significant.