What self-diagnostic questions should I ask to decide GRE vs GMAT/LSAT?

Ask yourself: What were my SAT/ACT scores and where were they strongest? Am I a strong reader? Is my vocabulary solid, or am I willing to build it? How comfortable am I with math? Have I taken a practice test for either exam? For GRE vs LSAT specifically, do you score higher on reading/vocab or logical reasoning? For GRE vs GMAT, the best predictor is simply taking a practice test of each and comparing where you land.