Why do you work? Are you just in it for the money, or do you do it for a greater purpose? Popular wisdom says your answer depends on what your job is. But psychologist Amy Wrzesniewski at Yale University finds it may have more to do with how we think about our work. Across secretaries and custodians and computer programmers, she finds we’re about equally split in whether we say we have a job, a career, or a calling. This week on Hidden Brain, Shankar Vedantam talks with Amy about how we find meaning and purpose at work.