So you've snagged a few dates with the lovely lass you met at your pal's weekend barbecue. You've spent some time with her bantering loosely about the usual stuff - restaurants, television shows, her Pinterest page - and now it's time to start finding out what really makes this woman tick. Why waste time with the usual conversational pink slime? Dig deep!

The trick is to tap the same tools psychologists use to gauge personality. Some shrinks shoot for a roster of telltale traits called the Big Five - extroversion, openness to new experience, agreeableness, conscientiousness, and neuroticism. "Those traits often become problematic at their extreme ends - when introversion, for example, becomes detachment," says psychologist John Mayer, Ph.D., of the University of New Hampshire. Other experts believe you can scoot by with fewer levels of inquiry. "Traits give you the broad strokes," says Dan McAdams, Ph.D., a psychologist at Northwestern University. Instead, zero in on her motivations and try to discover how she sees her life's narrative.

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We developed five threads you can drop in here and there to either skim the surface of her psyche or go in deep. Bonus: They can work at any stage of a relationship. After all, you never want to stop learning things about the woman you're with, right?

Tell-All Question 1: Want to dance on top of this bar with my friend Starla?
Okay, that's a bit forward. Instead, just ask her straight out: "Do you like this place?" As traits go, extroversion is hard to miss: a big smile, an easy posture, and lots of eye contact all signal an outgoing personality. But if the telltale signs are fuzzy, this question can help you figure out if she's a wallflower or a party animal, says Bernardo Carducci, Ph.D., of Indiana University Southeast's Shyness Research Institute. If she's an introvert but you sense that she wants to change that, plan dates that allow for mingling with strangers, suggests psychologist Seth Meyers, Psy.D., such as a wine tasting or a cooking class. "If she's on the shy side, she'll be more likely to come out of her shell if you take the plunge and engage others first," he says.

Tell-All Question 2: How about some poison fish?
Dinner is a great opportunity to gauge her openness to new experiences. Hit her up with "Like to share the fugu sashimi? Apparently it's deadly if not properly prepared!" If the idea of such novelty has her scanning for the exit, you won't be bringing her to Burning Man. Still, you don't have to turn your outing into a Fear Factor audition just to find out if she's adventurous. Ask her which movies, music, books, and art she likes. "The real tell is variety," says Sam Gosling, Ph.D., a psychologist at the University of Texas at Austin and the author of Snoop: What Your Stuff Says about You. "Twenty books on 20 subjects suggest more openness than 200 books on one or two subjects." If she doesn't seem adventurous, boost the PDA factor, suggest dating mavens Emma Taylor and Lorelei Sharkey, of A kiss on the sidewalk, a sly butt-pinch in the store - these encourage adventurousness.

Tell-All Question 3: Want to move to Biloxi with me? Today?!?
Don't let her hotness blind you from facing facts if she's a hot mess. "In context, ask her how she's made important life decisions, such as accepting a job or making a move," says psychologist Craig Malkin, Ph.D. "You're looking for signs of a reckless, flaky approach to life." If she's thoughtful and reflective, he says, chances are she's high in conscientiousness - a trait that suggests she won't be flaky with you. Or ask her advice on dealing with a coworker of yours whose work has become sloppy. "You'll see the standards she holds herself to," says Rita Watson, M.P.H., a relationship columnist with Psychology Today.

Tell-All Question 4: Any ex-boyfriends you'd like me to ice?
If you have an opportunity to ask about her relationships with old friends, former mates, or family members, jump on it. Her answers could provide a valuable window into her agreeableness. "People who score highly in this area tend to be forgiving of the wrongs they've suffered, lenient in their judgment of others, and willing to compromise," Mayer says. If mentions of exes are slathered with acrimonious sentiment, it could be a sign that she holds a grudge or lacks much empathy. You really don't need that.

Tell-All Question 5: Here's $1 million. Would you quit your job?
If you ask her if she likes her job and end up listening to a dour monologue about why her 9-to-5 sucks, she might be a bit neurotic. People high in neuroticism often have turmoil in their lives, Malkin says. "They tend to be more unhappy, and so are their partners," he says. Also, take note of her usage of the word "I," which can be a red flag if it's excessive, says psychologist James Pennebaker, Ph.D., of the University of Texas at Austin. "When people are anxious, they look inward," he says. "People who are low in neuroticism are not paying attention to self. They're looking outward, focusing on the environment or other people." To see if she can change tracks, try a gentle nudge, says Malkin: "I hope our date's a break from all that - a chance for you to enjoy yourself." If she's capable of shifting gears, she'll take the hint and possibly even acknowledge being so wrapped up in her worries.

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