By Ashley Welch, Scientific American Anyone who has ever devoured a triple-chocolate brownie after an intense workout knows how tempting it can be to indulge after behaving virtuously. A new study suggests, however, that we often apply this thought process to inappropriate scenarios, giving ourselves...

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...

By David Brooks, The New York Times The story of evolution, we have been told, is the story of the survival of the fittest. The strong eat the weak. The creatures that adapt to the environment pass on their selfish genes. Those that do not become extinct. In this telling, we humans are like all other...

By Wilhelm Hofmann and Malte Friese, Scientific American Mind Most of us start out with the best of intentions. Then we walk right past the fruit bowl in search of the devil's food cake. Or drink one glass of wine too many. Or, after yet another glass, kiss that co-worker at the holiday party. Unfortunately...

3/9/11, Science Daily A polite act shows respect. But a new study of a common etiquette -- holding a door for someone -- suggests that courtesy may have a more practical, though unconscious, shared motivation: to reduce the work for those involved. The research, by Joseph P. Santamaria and David A. Rosenbaum...

By Joshua Knobe from The New York Times. "...The study of human nature, whether in Nietzsche or in a contemporary psychology journal, is obviously relevant to certain purely scientific questions, but how could this sort of work ever help us to answer the distinctive questions of philosophy? It may...