News in Brief Why Disappointment Is So Devastating: Dopamine, Addiction, and the Hedonic Treadmill Unless rewards are constantly getting bigger and more exciting, even the best experiences pale over time when repeated.… Pacific Standard Staff
Environment The Psychology of Mars One Hopefuls Studies show that it takes a certain kind of crazy to volunteer for a trip to Mars. Kate Wheeling
Social Justice Is the Will to Work Out Genetically Determined? What a 94-year-old athlete and an obsessive albino mouse can teach us about habits. Bruce Grierson
Economics Your Brain is Making You Lazy Good news, slackers! It’s not your fault you’re lazy—it’s your brain chemistry that makes you focus on what… Michael Fitzgerald