CogLab gives both students and instructors the chance to participate as subjects in classic experiments of cognitive psychology. CogLab on CD-ROM gives students access to complete the experiments without an Internet connection or a web browser, while CogLab online allows instructors to combine data across all of their students, to have class averages automatically calculated, and to make those averages available to students. Instructors who choose the CD-ROM version can download a program that will allow them to combine and calculate class averages of data generated by their students.