I have been using the "Performance 2" from Head Cleaners to help me with test anxiety and studying. I have done quite well using it but I have also been using Memory Supercharger from LSC so it's hard to say what is doing what. I really liked the HeadCleaners website. He had some wonderful suggestions for navigating college..from scheduling to studying. I found the tape to be of excellent quality (recording) but was a bit distracted by the way you can hear his breath on the tape...you don't get that with the LSC paraliminals.