From New Scientist WHY do we sometimes wrestle with moral dilemmas? A twist on a classic psychology experiment suggests that our minds have two parallel moral systems, and they don't always agree. In the trolley experiment, participants are told that a runaway tram trolley could kill five people...

By Tiffanny O'Callaghan, in The New Scientist Disgust can be a bewildering emotion. In her new book, That's Disgusting, research psychologist Rachel Herz points out that our tendency to react by pulling away is based on a combination of self-preservation and learned behaviour. When we are grossed...

By Jonathan Haidt, Reason Magazine From a rational perspective, joining a protest rally is like voting—a complete waste of time. The odds that your voice or your protest sign will make a difference are no better than the odds that your vote will change an election. And yet, people do join protests and...

The Vexing Mental Tug-of-War Called Morality By Kristin Ohlson, Discover magazine Would you kill a crying baby to save yourself and others from hostile soldiers outside? Neuroscience offers new ways to approach such moral questions, allowing logic to triumph over deep-rooted instinct. You arrive at the...

By Daisy Grewal, Scientific American Mind 4/5/11 An excerpt: Psychologists have long known that many people are prejudiced towards others based on group affiliations, be they racial, ethnic, religious, or even political. However, we know far less about why people are prone to prejudice in the first place...