extroverted personality traits Life's Extremes: Outgoing vs. Shy even personality Life's Extremes: Outgoing vs. Shy extroverted personality factors Life’s Extremes: Outgoing vs. Shy determined extroversion/introversion even personality Life's Extremes: Outgoing vs. Shy extroversion/introversion extroverted larger social networks personality traits social butterflies personality traits extroversion versus introversion extroverted extroverted