This case study is based on a program evaluation of a professional certificate program that trains early childhood care and education providers to build and support young children's emotional literacy. The research project described in the case study will address approaches to methodological combination, justifying research design and changes to designs and evaluating the importance of lessons learned versus data outcomes. The reader will learn the importance of predicting and reacting to ethical issues and research team assumptions in the process of designing and implementing projects with young children. [This content is provided in the format of an e-book.]