20-29 “true” responses mean that you’re a true introvert. “Only deep relationships measure up as friendships and you use them to relax. You need to mentally rest throughout the day, even after enjoyable activities. Because you will draw a blank under pressure, prepare for meetings, talks, and even parties beforehand. Accept your nature and learn to politely fend off energy-draining people.”
10-19 “true” responses mean that you’re both introverted and extroverted. “You sometimes feel torn between the desire to dance in the streets and walk alone on the beach. Notice this, so you can keep your energy consistent. You judge yourself through your thoughts and feelings, and through others, leaving you with a broad view that is sometimes difficult to straddle.”
1-9 “true” responses mean that you’re an extrovert. “You relish variety, have lots of ‘close, personal’ friends and will chat with complete strangers. Your stimulation is all external, so you talk, think, and act quickly. As you reach midlife, however, you may need to take a break from the high life to reflect, even though it goes against your nature.”
This test for introversion is from “The Introvert Advantage: How to Thrive in an Extrovert World” by Marti Olsen Laney.