I was in JROTC in high school and too the ASVAB test, which is a military aptitude test. I did very well in the organizational section, and not very well in the engineering part. They showed a diagram of a machine and asked us to label the part that didn't belong. Wild guess, anyone? Well, my husband also took it when he was in high school, and he had no problems with that section. He could figure it out and they said he might have a career as an engineer ahead of him. He's a writer. So there you go. I will say the ASVAB is probably a little better at predicting and identifying aptitude than most of these tests are.