AdaptiBar's patented, adaptive technology is the most advanced and innovative available in standardized test preparation. The premise is logical: the algorithm adjusts the presentation of questions in such a way that it emphasizes areas of weakness without neglecting areas of strength. It takes into consideration the performance in each subject and subtopic, as well as the question distribution on the actual exam. It does this subtly so that you are not conscious of the fact that you are spending more time in areas of weakness, which makes studying more effective and effcient. This is an important factor in test preparation because humans are naturally inclined to gravitate away from areas of weakness so that they find more areas of positive reinforcement.