Enrolling in an introductory course in psychology is a staple of many community college students' core curriculum. For those students who plan to pursue social science and humanities-related majors in particular, introductory psychology helps provide a solid base upon which future coursework at all academic levels will be built. The goal of any introductory course is to convey information from a source of authority with (firsthand) knowledge to individuals who, on average, have a novice understanding of the given material. Issues of involvement and retention relate directly--although not exclusively--to the instructor's approach in the classroom. Successfully progressing from a rote memorization model to engaging in critical thinking is an essential component for students in community college. In this article, the authors describe a study conducted to determine whether a "Test Yourself" procedure, administered either before or after a lecture, might improve students' retention of the information, as well as stimulate critical thinking. (Contains 2 tables.)