Today's technologies are rapidly impacting how children learn, play, communicate, and interact with others. Popular media and common wisdom often portray children's technology use as detrimental to their growth and wellbeing. However, in recent years, a wealth of research in Child-Computer Interaction (CCI), education, and health informatics…

This dissertation presents the results of three field experiments implemented to evaluate the effectiveness of strategies to improve the health or education of children in developing countries. In Guatemala, community health workers at randomly selected clinics were given patient tracking lists to improve their ability to remind parents when their…