Myers‒Briggs Type Indicator, StrengthsFinder 2.0 and other personality type tests have become commonplace tools in many workplaces. But do they really tell us about personality traits, and can they be helpful personally and professionally? These are among the questions Cambridge University professor Brian Little explores in his new book Me, Myself and Us: The Science of Personality and the Art of Well-Being. Wharton management professor Adam M. Grant recently interviewed Little about personality traits and his new book when he visited campus as a guest lecturer in the Authors@Wharton series. An edited transcript of the conversation follows. Adam Grant: It is not every day that I get to interview my mentor on camera. Brian, for starters, tell us about your book. Brian Little: The book actually grew out of experiences you and I had at Harvard a few years ago. I had stumbled upon the opportunity of teaching a class. As the class went on, after a few days, it got bigger. And then bigger.…