Paraliminals, for those who do not know, are subliminal recordings using two voices, one through each ear. I have to admit, they are not my favourite method of personal growth, yet there is value in the concept.
It may be that I have not given them a fair trial, as at best, I have only listened a couple of times. Assuming that the more paraliminals are used, the better the benefit with the subconscious being a sponge to this way of learning.
Some people swear by them and the company Learning Strategies is one of the leaders in the field. If this appeals to anyone, I would check them out.