Bertrand and Mullainathan conducted an audit study in which they sent out 5,000 fictitious resumes with identical credentials in response to real job ads. Some resumes were given white sounding names (Emily Walsh) and others were given black sounding names (Lakisha Washington). How do callback rates compare for applicants with white sounding names and black sounding names? O call back rates were higher for resumes with black sounding female names, but call back rates were about the same for male names. O call back rates were higher for resumes with black sounding names. call back rates were about the same. call back rates where lower for resumes with black sounding names