Stephen Denning's talk from the UXPA 2014 Ignite session "Are you a Super Hero or a Super Villain? Using Design Psychology for Good (and Evil)." Design Psychology is a powerful tool to wield and can be used to the benefit or detriment of our users; motivating them to behave in ways that can be in their interest, or our own. Our panel of experienced professionals, each with an interest in different facets of design psychology, will choose a white hat or black hat - some taking the side of good and honest intentions, with others taking the dark side where manipulation and coercion reign. On which side will you fall?