Rosa Guzman is a Research Assistant with the Zaentz Early Education Initiative. She leads the Early Learning Study at Harvard where she assists in the design and execution of the study and its data management and analysis. She is currently a PhD student in the Human Development, Teaching and Learning concentration at the Harvard Graduate School of Education where she is studying the effects of digital reading devices on children’s early language and literacy skills and the role of technology in the home and in classrooms. Before joining the Zaentz Initiative, Guzman worked as a lab manager and research assistant at the Harvard Lab for Developmental studies. She conducted several studies that explored the training of children’s intuitive numerical and spatial abilities, with the goal of creating fun games that could help children mathematical abilities in underserved communities. She also worked on projects that focused on understanding the role of bilingualism in children's executive function and social skills.