DEDICATIONThis dissertation is dedicated to Leshy.iv ACKNOWLEDGEMENTS I love teams. I always have. There is nothing better to me than working as hard as possible toward a common goal with a dedicated group of self-sacrificing people.Unfortunately, I have been told time and time again, writing a dissertation is a lonely process. For me, this was gladly not the case. This has been a team event and any success I have had in this endeavor has been due to the extraordinary talents and generosity of the people that surround me. While I have received support from countless friends and family during this process I would like to specifically acknowledge a few members of my team without whom this accomplishment would not have been possible. v Finally, I would also like to thank by office buddy, Dr. Devon Twyford. It was a long journey and I'm glad we got to make it together.I wish to express my thanks and love to my Mom, Dad, and big brother for a list of things too long to include here. All three of you were "non-traditional" college students and understanding the guts and grit it took each of you to get where you are made all the long days and late nights working on this project seem just a little easier.Like we do with everything else in our family you all made this goal seem important without letting me take myself too seriously. Thanks for all the love and laughs. Thanks to my in-laws as well for supporting me wholeheartedly and for never seeming to doubt that I really did have to miss out on family events because I was "working on my Previous research has shown that while nearly 40% of all students who enter postsecondary institutions leave without ever obtaining a degree, nearly two-thirds of students who persist to their second year eventually obtain a degree. Given the impact of the first year, a multitude of initiatives designed to promote first-to-second year persistence developed. The most popular initiative has been the first year seminar and particularly the extended orientation model of first year seminar. Given its prominence in the undergraduate curriculum, a large body of research has developed in recent decades investigating the first year seminar. However, the predominance of this literature has been conducted as single institution studies thus limiting the generalizability of previous findings. Therefore, in this study I used a systematic review and meta-analysis to move beyond information provided by single institution studies and gain a broader understanding of the overall effectiveness of extended orientation first year seminars.The results indicated that voluntary participation in an extended orientation first year seminar had a statistically significant, positive effect on first term GPA, first year GPA, and first-to-second year retention. For each of these three outcomes, a significant degree of heterogeneity was observed between study effect size estimates. Moderator vii tests did not identify patterns in this heterogeneity but did indicate that, for the first term GPA outcome, courses taught b...