iwlrs9kZYzqkFederal Reserve Chair Janet Yellen told lawmakers the central bank must press on with record monetary stimulus to combat persistent job-market weakness. “There are mixed signals concerning the economy,” Yellen said in response to questions during testimony to the Senate Banking Committee today. “We need to be careful to make sure that the economy is on a solid trajectory before we consider raising interest rates.” While her “overall view is more positive,” Yellen said low wages are one sign of “significant slack” in labor markets, even after the jobless rate fell to an almost six-year low. In unusually emotive language for a central banker, she talked about the “psychological trauma” suffered by the unemployed and their families. More