When taking the test, it should be possible to identify the questions that code for the "extrovert" and "introvert" scale.

Oh yes it is. That's the sad part. When you find yourself manipulating your own personality test. :) I actually meant to reply to the person above you who was surprised that you'd reveal that information in a business setting.

I've thought a bit about it, and am actually OK with it. For one thing, we manipulate our own personalities, so why not our personality tests. It's our job to make people comfortable working with us. The people whom we work with don't have to know what we're actually thinking at any given moment. In fact, I suspect if it were actually possible to create an algorithm that opens up a window into our minds, civility and collaboration would collapse.