mcs268 wrote:How arbitrary is this 40 cutoff? What's so special about it? I mean, am I really going to see my score jump up by 5 points all of a sudden? I guess what am I saying is, what difficult things won't you see on tests past 40?
40 is pretty arbitrary. I would go so far as to say completely so. The test has changed gradually and there is still a LOT of value in taking PTs before 40. But if you're only going to take 25 PTs, then 40 and up is the way to go. (fwiw, I'm a fan of the do-every-question-ever mode of studying)
A more natural cutoff for me seems like it'd be 52, because that's when they started doing CR, which is a pretty major change imo. I think general wisdom is just that the more recent a PT is, the more marginally applicable it will be to your real test. That doesn't at all mean there is something inherently different about PTs before an arbitrary cutoff.
If you're looking for general trends: LG has become more hypo-heavy and less inference-based, LR has gotten more logically tight, most people say RC has gotten harder but I like it more now.