Not long ago, I did a post reflecting on Susan Cain’s book, “Quiet: The Power of Introverts in a World That Can’t Stop Talking," musing on how I'm an introvert and what that means in my life. I got a lot of feedback from other introverts who were happy to have someone speak up on their behalf. Then my editor asked me an interesting question: can animals be introverted or extroverted? Cain addresses that issue very briefly in the book, citing research done on guppies in an attempt to … [Read more...]