We see politicians on the news, in debates and in commercials, and we make decisions about who will lead the country. But how do we really form impressions of these people? We are interested in finding out how people perceive a number of American politicians.

First you'll meet the cast of politicians you'll be rating, then you'll pick a survey. Each 10-minute survey is about a mental ability--such as the ability to feel joy, to think, or to feel pain. Your job is to judge pairs of politicians to say if one has more of the ability.

We ask you to do each survey only once and without interruption. At the end, you'll learn how you ranked all the politicians and how your rankings compare with others we've collected. Then, choose another survey or come back another time!

Please try to complete the survey once you start it - we can only use the data from completed surveys. Thank you for your interest!