Comment by dekhn

Those "spatial reasoning" questions look a lot like the IQ test I took as a kid (my parent brought me to the psychology department to be tested for some reason). I really struggled with those and it wasn't until years later, talking with some other folks, that I realized I couldn't visualize mental rotations as well as most people. because of that, I invested heavily in 3d computer graphics, which helped tremendously when I worked in structural biology.