, and Kathleen Rudasill, for their support and feedback throughout this process. I am grateful for my fellow lab members over the years, especially Dr. Danielle Brown, Paulette Flores, and Melissa Gordon, who were always willing to lend a sympathetic ear or share some laughs. This study would not have been possible without the participation of the local Head Start program administrators, teachers, parents, and children, and the data collection and coding of multiple undergraduate research assistants. I especially want to thank my fiance, Jeremy Hess, for his unconditional support, love, and patience every step of the way. Finally, I want to thank my parents, Charles and Julia Day, and family members, Phil and Cheryl Hess, for their support and encouragement. I love you all.