Theresa A. Roberts is currently a senior research associate at the Oregon Research Institute and an independent consultant for PreK–Grade 2 professional and programmatic development in literacy for English-fluent and emergent bilingual children. She conducts classroom-based research on vocabulary learning and reading foundations. Her most recent research, funded by a grant from the United States Institute of Education Science (IES), is designed to determine the most effective classroom instruction for teaching preschool children the alphabet. She is a professor emeritus at the California State University, Sacramento.