What's the difference between OG11 and OG12

[yuanfenglily]

After having taken a GMAT test early this year, I found that the main idea of solving problems and concept of tackleing this test have changed quite a lot !! especially verbal part

So, can anyone that has analyzed these shifts and modification share some ideas with me about the difference between OG11 and OG12!!!

I've just scheduled a second test in Sep. Wish me good luck!^-^

[StaceyKoprince]

We did do this analysis when OG12 (and Verbal Review and Quant Review) came out; here's the link:
http://www.manhattangmat.com/gmat-official-guides.cfm

There aren't major, major differences (in fact, something like 2/3 to 3/4 of the questions are the same in both books).