her endless support and encouragement as we completed this journey. With her guidance, we were able to complete a research study and thesis that we are proud to call our own. Thank you for taking every email, phone call, and knock at your office door as we went through this learning process. Thank you also to the Occupational Therapy faculty, including Diane Griffeath, who made phone calls and rearranged rooms and schedules to help us find appropriate research space. Thank you also to Stacy Frauwirth, MS, OTR/L, for her many edits to our early proposal and providing direction as we navigated the early stages of our thesis. We would also like to thank Sheila Frick and Cassie Riccoli Wilcox for providing equipment and support throughout our research. Without your assistance we would not have had the materials to conduct the research or the intricate knowledge of how this Therapeutic Listening® works. Lastly, we would like to thank our families and friends. Amy would like to thank her husband, Trent, her daughter Helyn, and the rest of her family and friends for supporting her through both the tears and joys on her many late nights and busy days. Madeleine would like to especially thank her parents and sisters who were there to answer all of her phone calls and make her feel better in times of excitement, frustration, and stress. Because of your support on this adventure, we know we will be better therapists as we embark on the next stage of our careers. v Table of Contents Acknowledgements…………………………………………………………………………… iv Table of Contents……………………………………………………………………………… v List of Tables ………………………………………………………………………………… vii List of Figures ……………………………………………………………………………….. viii Abstract ……………………………………………………………………………………… ix Introduction …………………………………………………………………………… .……. 1 Literature Review …………………………………………………………………….……… 3 Sound Based Interventions…………………………………………………………… 4 Brain Adaptation to Different Frequencies in Music …………………………….….. 6 Benefits of Sound Based Therapy Interventions …………………………………….. 8 Bilateral Coordination………………………………………………………………..