An *unpublished* study found it helped college students prepping for the LSAT:
http://www.nytimes.com/2012/04/22/magazine/can-you-make-yourself-smarter.html?pagewanted=all&_r=0
To improve on LR, I don't think it is enough just to keep practicing preptests. You need to apply your knowledge of logic to the tests, rather than learn logic from them. Here is a useful link I found http://philosophy.lander.edu/logic/tvs.html
Yes! I read the Economist, I fool-proofed the logic games from PT 1-30, and I did some logic puzzles out of a book written by George Summers. Also: read this: http://www.horace.org/blog/wp-content/uploads/2012/05/How-to-Lie-With-Statistics-1954-Huff.pdf
You just gotta keep in mind that things always start out difficult, especially when learning a whole new way of thinking. 7Sage's course teaches things differently than others, so you technically are re-learning all of ...