The Mood Elevator is an additional software suite and Manual, which can be packaged with your purchase or bought later. It is based on some remarkable research on severe, treatment-resistant depression described on that webpage. Low moods due to depression are very different from lack of happiness, but the Mood Elevator can lift them in just two hours of training. The Mood Elevator requires the Peak BrainHappiness Trainer or the Peak Achievement Trainer’s hardware and software in order to function. It includes feedback screens that combine the Mood Elevator and Neureka! so you can compare and boost both. No other training system can do both!