James W. Stigler is Professor of Psychology and Associate Dean of Social Sciences at UCLA, and a Senior Fellow at the Carnegie Foundation for the Advancement of Teaching. He is co-author of two popular books: The Teaching Gap (with James Hiebert) and The Learning Gap (with Harold Stevenson). He was Director of the TIMSS video studies, founder of LessonLab (acquired by Pearson Education in 2003), and is co-founder of new ed-tech startup, Zaption. He received his A.B. from Brown University and Ph.D. in Developmental Psychology from the University of Michigan. Stigler is best known for his observational work in classrooms, and has pioneered the use of multimedia technology for the study and improvement of classroom instruction.