This new book, Processing Instruction: Theory, Research, and Commentary, edited by Bill VanPatten--a pioneer in processing instruction (PI)--is a refreshing presentation of 10 related and not widely available articles that illustrate the role of processing instruction in second language acquisition. The articles provide both historical and current context, as well as describe the influence of the input processing model on PI. The contents include empirical papers presenting new data that demonstrate both the theoretical and pedagogical threads of research. Aside from simply esta