According to Bandura's social cognitive theory, self-efficacy and self-regulation are key processes that affect students' learning and achievement. This article discusses students' reading and writing performances using Zimmerman's four-phase social cognitive model of the development of self-regulatory competence. Modeling is an effective means of building self-regulatory and academic skills and of raising self-efficacy. Reading and writing research is discussed in which modeling was employed to enhance self-efficacy, skills, and self-regulation across multiple phases of Zimmerman's model. The article concludes by suggesting instructional applications based on social cognitive theory and research findings. (Contains 1 figure and 1 table.)