The goal of this thesis was to further the literature on mother-in-law/daughter-in-law relationships by directly employing Communication Accommodation Theory (CAT) to examine relationships between categories of accommodation and relational quality in these relationships. Daughters-in-law (N = 677) were solicited via private Facebook groups to complete an online survey regarding accommodation (their own and their mothers-in-law's), their feelings of shared family identity, and their relationship satisfaction in their relationship with their mothers-in-law. Results demonstrated relationships between mothers-in-law's accommodation, overaccommodation, and underaccommodation of their daughters-in-law and daughters-in-law's feelings of shared family identify and relationship satisfaction. Additionally, relationships were present between daughters-in-law's feelings of shared family identity and relationship satisfaction and their accommodation (active and inactive), nonaccommodation, and reluctant accommodation of their mothers-in-law. These results confirm that CAT is directly applicable to mother-in-law/daughter-in-law relationships in that both women's accommodation coincides with daughters-in-law's perceptions of satisfaction and feeling like a family. Additional findings assert the importance of mediated communication, warrant further study of the nature of in-law dynamics, and invite researchers to reconsider the conceptualization of relationship satisfaction in mother-in-law/daughterin-law relationships. iii DEDICATION This thesis is dedicated to my daughter, Scarlett. In becoming a mother, I have gained new and complex family relationships, while others have changed and grown. As I learn more about the complexities of motherhood and family, my interest in family communication continues to grow. Motherhood has motivated and challenged me throughout the completion of this thesis and my daughter continues to teach and inspire me every day. iv ACKNOWLEDGEMENTS I would like to express my appreciation to all those who have guided and supported me through the process of writing this thesis: First, I would like to thank my committee. Thank you to Dr. Matthew Martin for your honest and thoughtful feedback and for the important additions you suggested for this thesis. Both as a committee member and department chair, you have helped me succeed throughout the completion of this thesis and this program. To Dr. Scott Myers, thank you for taking time to teach me the statistical analyses I needed to know for this thesis. Your questions and suggestions regarding both the focal concepts and the small details helped make this thesis the best it could be. Of course, I also thank Dr. Christine Rittenour, my advisor, for being so supportive throughout this process. Your expertise helped me tremendously with this project, and your caring and acceptance kept me grounded throughout. I would also like to thank my cohort members for their tremendous support while I was writing this thesis. I am proud to be a part of such an amazing group ...