Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent book

Dr. Rothstein has done a masterful job of presenting the effective ways to improve one's brain function. If you can find a physician who can help you work through his program, you will certainly be on the road to recovery of your mental capapacities. If your brain is already firing on all cylinders, use these recommedations for preventative purposes. I highly recommend this book.