Jim Harter, Ph.D., is chief scientist, workplace, for Gallup and co-author of the Wall Street Journal bestseller It’s the Manager. He has led more than 1,000 studies of workplace effectiveness, including the largest ongoing meta-analysis of human potential and business unit performance. He is also the bestselling author of 12: The Elements of Great Managing and Wellbeing: The Five Essential Elements, Harter has also published articles in many prominent business and academic journals.