If your citizenship comes with the responsibility - and privilege - of voting, then every few years you face an interesting challenge. Who will you vote for? Whether you choose to support an incumbent, a celebrated war hero, an experienced government official, or a new face on the political scene, psychologists are incredibly curious about the process by which you come to that decision. There is reason to believe that, coming from a thoughtful and prepared voter, your ballot will reflect an objective assessment of candidate qualifications. You may, for example, use the time before an election...

How do you make sense of Barack Obama and John McCain? The odds are that you judge them mainly on two dimensions: warm/cold and (in)competence. Depending on your experience of them, you may judge one of them as both warm and competent, evoking your admiration and pride; and perhaps the other as neither warm nor competent, which triggers a sense of contempt and disgust. Or perhaps you view one as warm but not competent, which generates pity and sympathy; or finally, you could judge one of them as cold but competent, leading to feelings of resentment and even envy. All the media hoopla boils...