Yeah, I have found that it improves 3 things. (this is for GRE, which is similar)
1. Basics: If you don't know standard permutations and combinations then knowing those formulae off the top of your head is nice to have. The language portions in particular, take a lot of preparation for non-native speakers.
2. Speed: Giving a decent number of sample tests helps put you in game mode for the real thing. It also acquaints you to the manner in which questions are phrased and their intended meanings. (big deal for non-native speakers) Lastly, it helps ease anxiety.
3. Gotcha-proofing: Every examination has some familiar gotcha patterns. Some training helps in looking out for them helps.
1. Basics: If you don't know standard permutations and combinations then knowing those formulae off the top of your head is nice to have. The language portions in particular, take a lot of preparation for non-native speakers.
2. Speed: Giving a decent number of sample tests helps put you in game mode for the real thing. It also acquaints you to the manner in which questions are phrased and their intended meanings. (big deal for non-native speakers) Lastly, it helps ease anxiety.
3. Gotcha-proofing: Every examination has some familiar gotcha patterns. Some training helps in looking out for them helps.