Jeff,
The book I'm reading is actually VERY encouraging here and well put-together. From what I've read so far, repetition while sleeping can greatly strengthen the effect. Different studies draw different conclusions.
Here's a thought I've had: Paraliminals contain the "language of the unconscious mind" (metaphors, stories, indirect commands, descriptions of beneficial states, supportive comments, etc.). This information is carefully constructed to "go right in" - bypassing the critical factor. For sleep-learning, maybe this type of input could have an absorption advantage over "straight information", such as recorded class lectures. Maybe even a VERY BIG advantage. I'm not aware of this variable having been tested (save for your and Brian's personal experiences).
If this type of information is "candy" to the unconscious, could that make the difference here?
I'm still looking forward to listening to this continuously at night, I just haven't quite progressed to that point yet. More later...
