Carnegie Learning's Cognitive Tutors were developed at Carnegie Mellon University as part of a research project by world-renowned cognitive scientists who were testing a theory of how people learn. Our research references demonstrate that the Cognitive Tutors are not only based on solid learning science, but also that our publications have appeared in respected, peer-reviewed professional journals. As a demonstration of how the Cognitive Tutors meet the Scientifically Based Research (SBR) requirements of No Child Left Behind (NCLB), we have created a one-page document that parallels the federal SBR requirements with the scientific research on the Cognitive Tutors.