Much of his research has been aimed at understanding the factors that affect the validity of personality self reports, and he is especially interested in methods for improving the validity and pragmatic utility of computer-generated, narrative personality reports. He currently helps to manage the International Personality Item Pool, a collaboratory for public domain personality measures. Recent projects have focused on individual differences in evolved emotional dispositions and the impact of these dispositions on (a) the perception of fictional characters, (b) motivated reasoning in science and philosophy, and (c) judgments of the fairness of wealth inequality.