I have just started studying for the GREs and I have very, very limited time to do it. I've heard some people tell me that it's actually not that helpful to study root words even though every GRE prep EVER recommends it. What do you think? Is it actually helpful to spend 5 hours learning root words or spend that 5 hours learning vocabulary words. Those who have taken the actual test or practice tests, has learning root words been helpful? Let me know!!!