From the Society for the Teaching of Psychology website:
This interactive application provides supplemental instruction on factorial research designs that students enrolled in a Statistics or Research Methods course in psychology can complete as homework or on their own. It consists of 10 pages of definitions, examples, and images, and 11 quiz questions that help students measure their understanding of the design. At the end of the application, students can print a certificate to indicate their completion of the exercise.
Author: Marcie Desrochers