By Claire Colvin Getting cut off in traffic, a missed deadline, spilt coffee, a cranky child - it doesn’t take much to upset us these days. A recent study by Yale School of Management professor Sigal G. Barsade and Donald Gibson of Fairfield University showed that 1 in 4 Americans feel at least somewhat angry at work. That’s a lot of grumpy people in the office. Add to that the frustration of a long commute and imagine what we’re... > Full Story