The intelligender test is a fraud. It says that it has an 82% accuracy rate, but they have never been able to actually produce any tests that document its results. In fact, it is currently in the midst of a class action law suit for fraudulent medical claims here in the US. If you want to do it for fun, then go ahead - but you would have the exact same likelyhood for probability flipping a coin (and be $40 richer).