What is qualification? Read this: http://www.puaforums.com/dating-advi...html#post80408
Got it? Ok!
Building off of that, there are a few very easy ways to get a girl to qualify herself. I like direct qualification so much better because it gets to the point and you'll see real effort on her part
All you say is "Ok, you have five minutes to convince me to marry you - go!"
PAY ATTENTION TO WHAT SHE SAYS. This works best if you built a small level of comfort and she knows a few things about you (you'll know what they are based on what she says).
BODY LANGUAGE is crucial. If you hear something you don't like, express it. As for hearing something you like, reward her! A high five, a hug, etc. Do not cross your feet nor point your chest directly towards her. Play with this - "face" her when you like something and away when you don't. Check your watch occasionally and let her know how much time she has left (best done when she is trying to justify something you don't approve of or is thinking).
From this point forward, she will always mention stuff about herself to get you to like her - "Oh, I'm also ___!"
Have fun with this!